diff options
| author | Keith Whitwell <keith@tungstengraphics.com> | 2007-06-14 18:11:48 +0100 |
|---|---|---|
| committer | Keith Whitwell <keith@tungstengraphics.com> | 2007-06-14 18:11:48 +0100 |
| commit | 6393cda6766b707ef01e925d378239a66d143ae0 (patch) | |
| tree | 31b5c8cc27ee16b142e27c42d5cb69f2fe9826d2 /src/mesa/pipe | |
| parent | 7050a4a7bc779b2c30fbd8244d4e77e6bd3dc30f (diff) | |
Renamed softpipe directories and files to something less confusing.
softpipe/state_tracker --> state_tracker/
softpipe/ --> pipe/
softpipe/generic --> pipe/softpipe/
I don't think pipe is a great name, but I disliked all the others too.
Luckily it's fairly easy to rename with git, so this can be revisited
later.
Diffstat (limited to 'src/mesa/pipe')
55 files changed, 9429 insertions, 0 deletions
diff --git a/src/mesa/pipe/Makefile b/src/mesa/pipe/Makefile new file mode 100644 index 0000000000..451911a354 --- /dev/null +++ b/src/mesa/pipe/Makefile @@ -0,0 +1,2 @@ +default: + cd .. ; make diff --git a/src/mesa/pipe/p_context.h b/src/mesa/pipe/p_context.h new file mode 100644 index 0000000000..716ddd27a9 --- /dev/null +++ b/src/mesa/pipe/p_context.h @@ -0,0 +1,89 @@ +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +#ifndef SP_CONTEXT_H +#define SP_CONTEXT_H + +#include "mtypes.h" + +extern struct softpipe_context *generic_create( void ); + +/* Drawing currently kludged up via the existing tnl/ module. + */ +struct vertex_buffer; + + +/** + * Software pipeline rendering context. Basically a collection of + * state setting functions, plus VBO drawing entrypoint. + */ +struct softpipe_context { + + void (*destroy)( struct softpipe_context * ); + + /* + * Drawing + */ + void (*draw_vb)( struct softpipe_context *softpipe, + struct vertex_buffer *VB ); + + /* + * State functions + */ + void (*set_blend_state)( struct softpipe_context *, + const struct softpipe_blend_state * ); + + void (*set_cbuf_state)( struct softpipe_context *, + const struct softpipe_surface * ); + + void (*set_clip_state)( struct softpipe_context *, + const struct softpipe_clip_state * ); + + void (*set_depth_state)( struct softpipe_context *, + const struct softpipe_depth_state * ); + + void (*set_fs_state)( struct softpipe_context *, + const struct softpipe_fs_state * ); + + void (*set_polygon_stipple)( struct softpipe_context *, + const struct softpipe_poly_stipple * ); + + void (*set_setup_state)( struct softpipe_context *, + const struct softpipe_setup_state * ); + + void (*set_scissor_rect)( struct softpipe_context *, + const struct softpipe_scissor_rect * ); + + void (*set_stencil_state)( struct softpipe_context *, + const struct softpipe_stencil_state * ); + + void (*set_viewport)( struct softpipe_context *, + const struct softpipe_viewport * ); +}; + + +#endif diff --git a/src/mesa/pipe/p_defines.h b/src/mesa/pipe/p_defines.h new file mode 100644 index 0000000000..c381865dab --- /dev/null +++ b/src/mesa/pipe/p_defines.h @@ -0,0 +1,121 @@ +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +#ifndef SP_DEFINES_H +#define SP_DEFINES_H + +#define SP_BLENDFACTOR_ONE 0x1 +#define SP_BLENDFACTOR_SRC_COLOR 0x2 +#define SP_BLENDFACTOR_SRC_ALPHA 0x3 +#define SP_BLENDFACTOR_DST_ALPHA 0x4 +#define SP_BLENDFACTOR_DST_COLOR 0x5 +#define SP_BLENDFACTOR_SRC_ALPHA_SATURATE 0x6 +#define SP_BLENDFACTOR_CONST_COLOR 0x7 +#define SP_BLENDFACTOR_CONST_ALPHA 0x8 +#define SP_BLENDFACTOR_SRC1_COLOR 0x9 +#define SP_BLENDFACTOR_SRC1_ALPHA 0x0A +#define SP_BLENDFACTOR_ZERO 0x11 +#define SP_BLENDFACTOR_INV_SRC_COLOR 0x12 +#define SP_BLENDFACTOR_INV_SRC_ALPHA 0x13 +#define SP_BLENDFACTOR_INV_DST_ALPHA 0x14 +#define SP_BLENDFACTOR_INV_DST_COLOR 0x15 +#define SP_BLENDFACTOR_INV_CONST_COLOR 0x17 +#define SP_BLENDFACTOR_INV_CONST_ALPHA 0x18 +#define SP_BLENDFACTOR_INV_SRC1_COLOR 0x19 +#define SP_BLENDFACTOR_INV_SRC1_ALPHA 0x1A + +#define SP_BLEND_ADD 0 +#define SP_BLEND_SUBTRACT 1 +#define SP_BLEND_REVERSE_SUBTRACT 2 +#define SP_BLEND_MIN 3 +#define SP_BLEND_MAX 4 + +#define SP_LOGICOP_CLEAR 0 +#define SP_LOGICOP_NOR 1 +#define SP_LOGICOP_AND_INVERTED 2 +#define SP_LOGICOP_COPY_INVERTED 3 +#define SP_LOGICOP_AND_REVERSE 4 +#define SP_LOGICOP_INVERT 5 +#define SP_LOGICOP_XOR 6 +#define SP_LOGICOP_NAND 7 +#define SP_LOGICOP_AND 8 +#define SP_LOGICOP_EQUIV 9 +#define SP_LOGICOP_NOOP 10 +#define SP_LOGICOP_OR_INVERTED 11 +#define SP_LOGICOP_COPY 12 +#define SP_LOGICOP_OR_REVERSE 13 +#define SP_LOGICOP_OR 14 +#define SP_LOGICOP_SET 15 + +#define SP_STENCIL_FUNC_NEVER 0 +#define SP_STENCIL_FUNC_LESS 1 +#define SP_STENCIL_FUNC_EQUAL 2 +#define SP_STENCIL_FUNC_LEQUAL 3 +#define SP_STENCIL_FUNC_GREATER 4 +#define SP_STENCIL_FUNC_NOTEQUAL 5 +#define SP_STENCIL_FUNC_GEQUAL 6 +#define SP_STENCIL_FUNC_ALWAYS 7 + +#define SP_STENCIL_OP_KEEP 0 +#define SP_STENCIL_OP_ZERO 1 +#define SP_STENCIL_OP_REPLACE 2 +#define SP_STENCIL_OP_INCR 3 +#define SP_STENCIL_OP_DECR 4 +#define SP_STENCIL_OP_INCR_WRAP 5 +#define SP_STENCIL_OP_DECR_WRAP 6 +#define SP_STENCIL_OP_INVERT 7 + +/* Note: same as stencil funcs. Also used for shadow/depth compare */ +#define SP_DEPTH_FUNC_NEVER 0 +#define SP_DEPTH_FUNC_LESS 1 +#define SP_DEPTH_FUNC_EQUAL 2 +#define SP_DEPTH_FUNC_LEQUAL 3 +#define SP_DEPTH_FUNC_GREATER 4 +#define SP_DEPTH_FUNC_NOTEQUAL 5 +#define SP_DEPTH_FUNC_GEQUAL 6 +#define SP_DEPTH_FUNC_ALWAYS 7 + +#define SP_TEX_WRAP_REPEAT 0 +#define SP_TEX_WRAP_CLAMP 1 +#define SP_TEX_WRAP_CLAMP_TO_EDGE 2 +#define SP_TEX_WRAP_CLAMP_TO_BORDER 3 +#define SP_TEX_WRAP_MIRROR_REPEAT 4 +#define SP_TEX_WRAP_MIRROR_CLAMP 5 +#define SP_TEX_WRAP_MIRROR_CLAMP_TO_EDGE 6 +#define SP_TEX_WRAP_MIRROR_CLAMP_TO_BORDER 7 + +#define SP_TEX_FILTER_NEAREST 0 +#define SP_TEX_FILTER_LINEAR 1 +#define SP_TEX_FILTER_NEAREST_MIPMAP_NEAREST 2 +#define SP_TEX_FILTER_NEAREST_MIPMAP_LINEAR 3 +#define SP_TEX_FILTER_LINEAR_MIPMAP_NEAREST 4 +#define SP_TEX_FILTER_LINEAR_MIPMAP_LINEAR 5 + +#define SP_TEX_COMPARE_NONE 0 +#define SP_TEX_COMPARE_R_TO_TEXTURE 1 + +#endif diff --git a/src/mesa/pipe/p_state.h b/src/mesa/pipe/p_state.h new file mode 100644 index 0000000000..150fa9fcad --- /dev/null +++ b/src/mesa/pipe/p_state.h @@ -0,0 +1,184 @@ +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +#ifndef SP_STATE_H +#define SP_STATE_H + +#include "mtypes.h" +#include "vf/vf.h" + +#define WINDING_NONE 0 +#define WINDING_CW 1 +#define WINDING_CCW 2 +#define WINDING_BOTH (WINDING_CW | WINDING_CCW) + +#define FILL_POINT 1 +#define FILL_LINE 2 +#define FILL_TRI 3 + +struct softpipe_setup_state { + GLuint flatshade:1; + GLuint light_twoside:1; + + GLuint front_winding:2; + + GLuint cull_mode:2; + + GLuint fill_cw:2; + GLuint fill_ccw:2; + + GLuint offset_cw:1; + GLuint offset_ccw:1; + + GLuint scissor:1; + GLuint poly_stipple:1; + + GLuint pad:18; + + GLfloat offset_units; + GLfloat offset_scale; +}; + +struct softpipe_poly_stipple { + GLuint stipple[32]; +}; + + +struct softpipe_viewport { + GLfloat scale[4]; + GLfloat translate[4]; +}; + +struct softpipe_scissor_rect { + GLshort minx; + GLshort miny; + GLshort maxx; + GLshort maxy; +}; + + +#define SP_MAX_CLIP_PLANES 6 + +struct softpipe_clip_state { + GLfloat ucp[SP_MAX_CLIP_PLANES][4]; + GLuint nr; +}; + +struct softpipe_fs_state { + struct gl_fragment_program *fp; +}; + +#define SP_MAX_CONSTANT 32 + +struct softpipe_constant_buffer { + GLfloat constant[SP_MAX_CONSTANT][4]; + GLuint nr_constants; +}; + + +struct softpipe_depth_state +{ + GLuint enabled:1; /**< depth test enabled? */ + GLuint writemask:1; /**< allow depth buffer writes? */ + GLuint func:3; /**< depth test func */ + GLfloat clear; /**< Clear value in [0,1] (XXX correct place?) */ +}; + + +struct softpipe_blend_state { + GLuint blend_enable:1; + + GLuint rgb_func:3; + GLuint rgb_src_factor:5; + GLuint rgb_dst_factor:5; + + GLuint alpha_func:3; + GLuint alpha_src_factor:5; + GLuint alpha_dst_factor:5; + + GLuint logicop_enable:1; + GLuint logicop_func:4; +}; + +struct softpipe_blend_color { + GLfloat color[4]; +}; + + +struct softpipe_stencil_state { + GLuint front_enabled:1; + GLuint front_func:3; /**< SP_STENCIL_FUNC_x */ + GLuint front_fail_op:3; /**< SP_STENCIL_OP_x */ + GLuint front_zpass_op:3; /**< SP_STENCIL_OP_x */ + GLuint front_zfail_op:3; /**< SP_STENCIL_OP_x */ + GLuint back_enabled:1; + GLuint back_func:3; + GLuint back_fail_op:3; + GLuint back_zpass_op:3; + GLuint back_zfail_op:3; + GLubyte ref_value[2]; /**< [0] = front, [1] = back */ + GLubyte value_mask[2]; + GLubyte write_mask[2]; + GLubyte clear_value; +}; + + +/* This will change for hardware softpipes... + */ +struct softpipe_surface { + GLubyte *ptr; + GLint stride; + GLuint cpp; + GLuint format; +}; + + +/** + * Texture sampler state. + */ +struct softpipe_sampler_state +{ + GLuint wrap_s:3; /**< SP_TEX_WRAP_x */ + GLuint wrap_t:3; /**< SP_TEX_WRAP_x */ + GLuint wrap_r:3; /**< SP_TEX_WRAP_x */ + GLuint min_filter:3; /**< SP_TEX_FILTER_x */ + GLuint mag_filter:1; /**< SP_TEX_FILTER_LINEAR or _NEAREST */ + GLfloat min_lod; + GLfloat max_lod; + GLfloat lod_bias; +#if 0 /* need these? */ + GLint BaseLevel; /**< min mipmap level, OpenGL 1.2 */ + GLint MaxLevel; /**< max mipmap level, OpenGL 1.2 */ +#endif + GLfloat max_anisotropy; + GLuint compare:1; /**< shadow/depth compare enabled? */ + GLenum compare_mode:1; /**< SP_TEX_COMPARE_x */ + GLenum compare_func:3; /**< SP_DEPTH_FUNC_x */ + GLfloat shadow_ambient; /**< shadow test fail color/intensity */ +}; + +#endif diff --git a/src/mesa/pipe/softpipe/Makefile b/src/mesa/pipe/softpipe/Makefile new file mode 100644 index 0000000000..12a8bd0409 --- /dev/null +++ b/src/mesa/pipe/softpipe/Makefile @@ -0,0 +1,3 @@ +default: + cd ../.. ; make + diff --git a/src/mesa/pipe/softpipe/g_context.c b/src/mesa/pipe/softpipe/g_context.c new file mode 100644 index 0000000000..c3329b5c7d --- /dev/null +++ b/src/mesa/pipe/softpipe/g_context.c @@ -0,0 +1,135 @@ +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/* Author: + * Keith Whitwell <keith@tungstengraphics.com> + */ + +#include "imports.h" +#include "macros.h" + +#include "tnl/t_context.h" +#include "vf/vf.h" + +#include "g_context.h" +#include "g_prim.h" +#include "g_state.h" +#include "g_draw.h" + +static void generic_destroy( struct softpipe_context *softpipe ) +{ + struct generic_context *generic = generic_context( softpipe ); + + draw_destroy( generic->draw ); + + FREE( generic ); +} + + +static void generic_draw_vb( struct softpipe_context *softpipe, + struct vertex_buffer *VB ) +{ + struct generic_context *generic = generic_context( softpipe ); + + if (generic->dirty) + generic_update_derived( generic ); + + draw_vb( generic->draw, VB ); +} + +struct softpipe_context *generic_create( void ) +{ + struct generic_context *generic = CALLOC_STRUCT(generic_context); + + generic->softpipe.destroy = generic_destroy; + generic->softpipe.set_clip_state = generic_set_clip_state; + generic->softpipe.set_viewport = generic_set_viewport; + generic->softpipe.set_setup_state = generic_set_setup_state; + generic->softpipe.set_scissor_rect = generic_set_scissor_rect; + generic->softpipe.set_fs_state = generic_set_fs_state; + generic->softpipe.set_polygon_stipple = generic_set_polygon_stipple; + generic->softpipe.set_cbuf_state = generic_set_cbuf_state; + generic->softpipe.draw_vb = generic_draw_vb; + + + + generic->prim.setup = prim_setup( generic ); + generic->prim.unfilled = prim_unfilled( generic ); + generic->prim.twoside = prim_twoside( generic ); + generic->prim.offset = prim_offset( generic ); + generic->prim.clip = prim_clip( generic ); + generic->prim.flatshade = prim_flatshade( generic ); + generic->prim.cull = prim_cull( generic ); + + + generic->draw = draw_create( generic ); + + ASSIGN_4V( generic->plane[0], -1, 0, 0, 1 ); + ASSIGN_4V( generic->plane[1], 1, 0, 0, 1 ); + ASSIGN_4V( generic->plane[2], 0, -1, 0, 1 ); + ASSIGN_4V( generic->plane[3], 0, 1, 0, 1 ); + ASSIGN_4V( generic->plane[4], 0, 0, 1, 1 ); /* yes these are correct */ + ASSIGN_4V( generic->plane[5], 0, 0, -1, 1 ); /* mesa's a bit wonky */ + generic->nr_planes = 6; + + return &generic->softpipe; +} + + + + + + +#define MAX_VERTEX_SIZE ((2 + FRAG_ATTRIB_MAX) * 4 * sizeof(GLfloat)) + +void prim_alloc_tmps( struct prim_stage *stage, GLuint nr ) +{ + stage->nr_tmps = nr; + + if (nr) { + GLubyte *store = MALLOC(MAX_VERTEX_SIZE * nr); + GLuint i; + + stage->tmp = MALLOC(sizeof(struct vertex_header *) * nr); + + for (i = 0; i < nr; i++) + stage->tmp[i] = (struct vertex_header *)(store + i * MAX_VERTEX_SIZE); + } +} + +void prim_free_tmps( struct prim_stage *stage ) +{ + if (stage->tmp) { + FREE(stage->tmp[0]); + FREE(stage->tmp); + } +} + + + + + diff --git a/src/mesa/pipe/softpipe/g_context.h b/src/mesa/pipe/softpipe/g_context.h new file mode 100644 index 0000000000..24d467f2c3 --- /dev/null +++ b/src/mesa/pipe/softpipe/g_context.h @@ -0,0 +1,149 @@ +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/* Authors: Keith Whitwell <keith@tungstengraphics.com> + */ + +#ifndef G_CONTEXT_H +#define G_CONTEXT_H + +#include "glheader.h" + +#include "softpipe/sp_state.h" +#include "softpipe/sp_context.h" + + + +struct generic_surface; +struct draw_context; +struct prim_stage; + + +enum interp_mode { + INTERP_CONSTANT, + INTERP_LINEAR, + INTERP_PERSPECTIVE +}; + + +#define G_NEW_VIEWPORT 0x1 +#define G_NEW_SETUP 0x2 +#define G_NEW_FS 0x4 +#define G_NEW_BLEND 0x8 +#define G_NEW_CBUF 0x10 +#define G_NEW_CLIP 0x20 +#define G_NEW_SCISSOR 0x40 +#define G_NEW_STIPPLE 0x80 + + + +struct generic_context { + struct softpipe_context softpipe; + + + /* The most recent drawing state as set by the driver: + */ + struct softpipe_viewport viewport; + struct softpipe_setup_state setup; + struct softpipe_fs_state fs; + struct softpipe_blend_state blend; + struct softpipe_surface cbuf; + struct softpipe_clip_state clip; + struct softpipe_scissor_rect scissor; + struct softpipe_poly_stipple poly_stipple; + GLuint dirty; + + + /* Cbuf derived state??? + */ + struct generic_surface *cbuf_surface; + + /* Clip derived state: + */ + GLfloat plane[12][4]; + GLuint nr_planes; + + /* Setup derived state. TODO: this should be passed in the program + * tokens as parameters to DECL instructions. + * + * For now we just set colors to CONST on flatshade, textures to + * perspective always and everything else to linear. + */ + enum interp_mode interp[VF_ATTRIB_MAX]; + + + /* FS + setup derived state: + */ + GLuint fp_attr_to_slot[VF_ATTRIB_MAX]; + GLuint vf_attr_to_slot[VF_ATTRIB_MAX]; + GLuint nr_attrs; + GLuint nr_frag_attrs; + GLuint attr_mask; + + GLboolean need_z; + GLboolean need_w; + + /* Stipple derived state: + */ + GLubyte stipple_masks[16][16]; + + + /* The software clipper/setup engine. + */ + struct { + struct prim_stage *setup; + struct prim_stage *unfilled; + struct prim_stage *twoside; + struct prim_stage *clip; + struct prim_stage *flatshade; + struct prim_stage *offset; + struct prim_stage *cull; + + struct prim_stage *first; + + GLenum prim; + GLuint vertex_size; + } prim; + + /* Temp kludge: + */ + struct draw_context *draw; +}; + + + + +static INLINE struct generic_context * +generic_context( struct softpipe_context *softpipe ) +{ + return (struct generic_context *)softpipe; +} + + + + +#endif diff --git a/src/mesa/pipe/softpipe/g_draw.c b/src/mesa/pipe/softpipe/g_draw.c new file mode 100644 index 0000000000..4e094c21a0 --- /dev/null +++ b/src/mesa/pipe/softpipe/g_draw.c @@ -0,0 +1,696 @@ +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + + /* + * Authors: + * Keith Whitwell <keith@tungstengraphics.com> + */ + +#include "imports.h" + +#include "tnl/t_context.h" + +#include "g_context.h" +#include "g_prim.h" +#include "g_headers.h" +#include "g_draw.h" + +/* This file is a temporary set of hooks to allow us to use the tnl/ + * and vf/ modules until we have replacements in softpipe. + */ + + +struct draw_context +{ + struct generic_context *generic; + + struct vf_attr_map attrs[VF_ATTRIB_MAX]; + GLuint nr_attrs; + GLuint vertex_size; + struct vertex_fetch *vf; + + GLubyte *verts; + GLuint nr_vertices; + GLboolean in_vb; + + GLenum prim; + + /* Helper for tnl: + */ + GLvector4f header; +}; + + +static struct vertex_header *get_vertex( struct draw_context *pipe, + GLuint i ) +{ + return (struct vertex_header *)(pipe->verts + i * pipe->vertex_size); +} + + + +static void draw_allocate_vertices( struct draw_context *draw, + GLuint nr_vertices ) +{ + draw->nr_vertices = nr_vertices; + draw->verts = MALLOC( nr_vertices * draw->vertex_size ); + + draw->generic->prim.first->begin( draw->generic->prim.first ); +} + +static void draw_set_prim( struct draw_context *draw, + GLenum prim ) +{ + draw->prim = prim; + + /* Not done yet - need to force edgeflags to 1 in strip/fan + * primitives. + */ +#if 0 + switch (prim) { + case GL_TRIANGLES: + case GL_POLYGON: + case GL_QUADS: + case GL_QUAD_STRIP: /* yes, we need this */ + respect_edgeflags( pipe, GL_TRUE ); + break; + + default: + respect_edgeflags( pipe, GL_FALSE ); + break; + } +#endif +} + + + +static void do_quad( struct prim_stage *first, + struct vertex_header *v0, + struct vertex_header *v1, + struct vertex_header *v2, + struct vertex_header *v3 ) +{ + struct prim_header prim; + + { + GLuint tmp = v1->edgeflag; + v1->edgeflag = 0; + + prim.v[0] = v0; + prim.v[1] = v1; + prim.v[2] = v3; + first->tri( first, &prim ); + + v1->edgeflag = tmp; + } + + { + GLuint tmp = v3->edgeflag; + v3->edgeflag = 0; + + prim.v[0] = v1; + prim.v[1] = v2; + prim.v[2] = v3; + first->tri( first, &prim ); + + v3->edgeflag = tmp; + } +} + + + + +static void draw_indexed_prim( struct draw_context *draw, + const GLuint *elts, + GLuint count ) +{ + struct prim_stage * const first = draw->generic->prim.first; + struct prim_header prim; + GLuint i; + + prim.det = 0; /* valid from cull stage onwards */ + prim.v[0] = 0; + prim.v[1] = 0; + prim.v[2] = 0; + + switch (draw->prim) { + case GL_POINTS: + for (i = 0; i < count; i ++) { + prim.v[0] = get_vertex( draw, elts[i] ); + + first->point( first, &prim ); + } + break; + + case GL_LINES: + for (i = 0; i+1 < count; i += 2) { + prim.v[0] = get_vertex( draw, elts[i + 0] ); + prim.v[1] = get_vertex( draw, elts[i + 1] ); + + first->line( first, &prim ); + } + break; + + case GL_LINE_LOOP: + if (count >= 2) { + for (i = 1; i < count; i++) { + prim.v[0] = get_vertex( draw, elts[i-1] ); + prim.v[1] = get_vertex( draw, elts[i] ); + first->line( first, &prim ); + } + + prim.v[0] = get_vertex( draw, elts[count-1] ); + prim.v[1] = get_vertex( draw, elts[0] ); + first->line( first, &prim ); + } + break; + + case GL_LINE_STRIP: + /* I'm guessing it will be necessary to have something like a + * render->reset_line_stipple() method to properly support + * splitting strips into primitives like this. Alternately we + * could just scan ahead to find individual clipped lines and + * otherwise leave the strip intact - that might be better, but + * require more complex code here. + */ + if (count >= 2) { + prim.v[0] = 0; + prim.v[1] = get_vertex( draw, elts[0] ); + + for (i = 1; i < count; i++) { + prim.v[0] = prim.v[1]; + prim.v[1] = get_vertex( draw, elts[i] ); + + first->line( first, &prim ); + } + } + break; + + case GL_TRIANGLES: + for (i = 0; i+2 < count; i += 3) { + prim.v[0] = get_vertex( draw, elts[i + 0] ); + prim.v[1] = get_vertex( draw, elts[i + 1] ); + prim.v[2] = get_vertex( draw, elts[i + 2] ); + + first->tri( first, &prim ); + } + break; + + case GL_TRIANGLE_STRIP: + for (i = 0; i+2 < count; i++) { + if (i & 1) { + prim.v[0] = get_vertex( draw, elts[i + 1] ); + prim.v[1] = get_vertex( draw, elts[i + 0] ); + prim.v[2] = get_vertex( draw, elts[i + 2] ); + } + else { + prim.v[0] = get_vertex( draw, elts[i + 0] ); + prim.v[1] = get_vertex( draw, elts[i + 1] ); + prim.v[2] = get_vertex( draw, elts[i + 2] ); + } + + first->tri( first, &prim ); + } + break; + + case GL_TRIANGLE_FAN: + if (count >= 3) { + prim.v[0] = get_vertex( draw, elts[0] ); + prim.v[1] = 0; + prim.v[2] = get_vertex( draw, elts[1] ); + + for (i = 0; i+2 < count; i++) { + prim.v[1] = prim.v[2]; + prim.v[2] = get_vertex( draw, elts[i+2] ); + + first->tri( first, &prim ); + } + } + break; + + case GL_QUADS: + for (i = 0; i+3 < count; i += 4) { + do_quad( first, + get_vertex( draw, elts[i + 0] ), + get_vertex( draw, elts[i + 1] ), + get_vertex( draw, elts[i + 2] ), + get_vertex( draw, elts[i + 3] )); + } + break; + + case GL_QUAD_STRIP: + for (i = 0; i+3 < count; i += 2) { + do_quad( first, + get_vertex( draw, elts[i + 2] ), + get_vertex( draw, elts[i + 0] ), + get_vertex( draw, elts[i + 1] ), + get_vertex( draw, elts[i + 3] )); + } + break; + + + case GL_POLYGON: + if (count >= 3) { + prim.v[0] = 0; + prim.v[1] = get_vertex( draw, elts[1] ); + prim.v[2] = get_vertex( draw, elts[0] ); + + for (i = 0; i+2 < count; i++) { + prim.v[0] = prim.v[1]; + prim.v[1] = get_vertex( draw, elts[i+2] ); + + first->tri( first, &prim ); + } + } + break; + + default: + assert(0); + break; + } +} + +static void draw_prim( struct draw_context *draw, + GLuint start, + GLuint count ) +{ + struct prim_stage * const first = draw->generic->prim.first; + struct prim_header prim; + GLuint i; + +// _mesa_printf("%s (%d) %d/%d\n", __FUNCTION__, draw->prim, start, count ); + + prim.det = 0; /* valid from cull stage onwards */ + prim.v[0] = 0; + prim.v[1] = 0; + prim.v[2] = 0; + + switch (draw->prim) { + case GL_POINTS: + for (i = 0; i < count; i ++) { + prim.v[0] = get_vertex( draw, start + i ); + first->point( first, &prim ); + } + break; + + case GL_LINES: + for (i = 0; i+1 < count; i += 2) { + prim.v[0] = get_vertex( draw, start + i + 0 ); + prim.v[1] = get_vertex( draw, start + i + 1 ); + + first->line( first, &prim ); + } + break; + + case GL_LINE_LOOP: + if (count >= 2) { + for (i = 1; i < count; i++) { + prim.v[0] = get_vertex( draw, start + i - 1 ); + prim.v[1] = get_vertex( draw, start + i ); + first->line( first, &prim ); + } + + prim.v[0] = get_vertex( draw, start + count - 1 ); + prim.v[1] = get_vertex( draw, start + 0 ); + first->line( first, &prim ); + } + break; + + case GL_LINE_STRIP: + if (count >= 2) { + prim.v[0] = 0; + prim.v[1] = get_vertex( draw, start + 0 ); + + for (i = 1; i < count; i++) { + prim.v[0] = prim.v[1]; + prim.v[1] = get_vertex( draw, start + i ); + + first->line( first, &prim ); + } + } + break; + + case GL_TRIANGLES: + for (i = 0; i+2 < count; i += 3) { + prim.v[0] = get_vertex( draw, start + i + 0 ); + prim.v[1] = get_vertex( draw, start + i + 1 ); + prim.v[2] = get_vertex( draw, start + i + 2 ); + + first->tri( first, &prim ); + } + break; + + case GL_TRIANGLE_STRIP: + for (i = 0; i+2 < count; i++) { + if (i & 1) { + prim.v[0] = get_vertex( draw, start + i + 1 ); + prim.v[1] = get_vertex( draw, start + i + 0 ); + prim.v[2] = get_vertex( draw, start + i + 2 ); + } + else { + prim.v[0] = get_vertex( draw, start + i + 0 ); + prim.v[1] = get_vertex( draw, start + i + 1 ); + prim.v[2] = get_vertex( draw, start + i + 2 ); + } + + first->tri( first, &prim ); + } + break; + + case GL_TRIANGLE_FAN: + if (count >= 3) { + prim.v[0] = get_vertex( draw, start + 0 ); + prim.v[1] = 0; + prim.v[2] = get_vertex( draw, start + 1 ); + + for (i = 0; i+2 < count; i++) { + prim.v[1] = prim.v[2]; + prim.v[2] = get_vertex( draw, start + i + 2 ); + + first->tri( first, &prim ); + } + } + break; + + + case GL_QUADS: + for (i = 0; i+3 < count; i += 4) { + do_quad( first, + get_vertex( draw, start + i + 0 ), + get_vertex( draw, start + i + 1 ), + get_vertex( draw, start + i + 2 ), + get_vertex( draw, start + i + 3 )); + } + break; + + case GL_QUAD_STRIP: + for (i = 0; i+3 < count; i += 2) { + do_quad( first, + get_vertex( draw, start + i + 2 ), + get_vertex( draw, start + i + 0 ), + get_vertex( draw, start + i + 1 ), + get_vertex( draw, start + i + 3 )); + } + break; + + case GL_POLYGON: + if (count >= 3) { + prim.v[0] = 0; + prim.v[1] = get_vertex( draw, start + 1 ); + prim.v[2] = get_vertex( draw, start + 0 ); + + for (i = 0; i+2 < count; i++) { + prim.v[0] = prim.v[1]; + prim.v[1] = get_vertex( draw, start + i + 2 ); + + first->tri( first, &prim ); + } + } + break; + + default: + assert(0); + break; + } +} + + +static void draw_release_vertices( struct draw_context *draw ) +{ + draw->generic->prim.first->end( draw->generic->prim.first ); + + FREE(draw->verts); + draw->verts = NULL; +} + + +struct header_dword { + GLuint clipmask:12; + GLuint edgeflag:1; + GLuint pad:19; +}; + + +static void +build_vertex_headers( struct draw_context *draw, + struct vertex_buffer *VB ) +{ + if (draw->header.storage == NULL) { + draw->header.stride = sizeof(GLfloat); + draw->header.size = 1; + draw->header.storage = ALIGN_MALLOC( VB->Size * sizeof(GLfloat), 32 ); + draw->header.data = draw->header.storage; + draw->header.count = 0; + draw->header.flags = VEC_SIZE_1 | VEC_MALLOC; + } + + /* Build vertex header attribute. + * + */ + + { + GLuint i; + struct header_dword *header = (struct header_dword *)draw->header.storage; + + /* yes its a hack + */ + assert(sizeof(*header) == sizeof(GLfloat)); + + draw->header.count = VB->Count; + + if (VB->EdgeFlag) { + for (i = 0; i < VB->Count; i++) { + header[i].clipmask = VB->ClipMask[i]; + header[i].edgeflag = VB->EdgeFlag[i]; + header[i].pad = 0; + } + } + else if (VB->ClipOrMask) { + for (i = 0; i < VB->Count; i++) { + header[i].clipmask = VB->ClipMask[i]; + header[i].edgeflag = 0; + header[i].pad = 0; + } + } + else { + for (i = 0; i < VB->Count; i++) { + header[i].clipmask = 0; + header[i].edgeflag = 0; + header[i].pad = 0; + } + } + } + + VB->AttribPtr[VF_ATTRIB_VERTEX_HEADER] = &draw->header; +} + + + + + +static GLuint draw_prim_info(GLenum mode, GLuint *first, GLuint *incr) +{ + switch (mode) { + case GL_POINTS: + *first = 1; + *incr = 1; + return 0; + case GL_LINES: + *first = 2; + *incr = 2; + return 0; + case GL_LINE_STRIP: + *first = 2; + *incr = 1; + return 0; + case GL_LINE_LOOP: + *first = 2; + *incr = 1; + return 1; + case GL_TRIANGLES: + *first = 3; + *incr = 3; + return 0; + case GL_TRIANGLE_STRIP: + *first = 3; + *incr = 1; + return 0; + case GL_TRIANGLE_FAN: + case GL_POLYGON: + *first = 3; + *incr = 1; + return 1; + case GL_QUADS: + *first = 4; + *incr = 4; + return 0; + case GL_QUAD_STRIP: + *first = 4; + *incr = 2; + return 0; + default: + assert(0); + *first = 1; + *incr = 1; + return 0; + } +} + + +static GLuint trim( GLuint count, GLuint first, GLuint incr ) +{ + if (count < first) + return 0; + else + return count - (count - first) % incr; +} + + +/* This is a hack & will all go away. + */ +void draw_vb(struct draw_context *draw, + struct vertex_buffer *VB ) +{ + GLuint i; + + VB->AttribPtr[VF_ATTRIB_POS] = VB->NdcPtr; + VB->AttribPtr[VF_ATTRIB_BFC0] = VB->ColorPtr[1]; + VB->AttribPtr[VF_ATTRIB_BFC1] = VB->SecondaryColorPtr[1]; + VB->AttribPtr[VF_ATTRIB_CLIP_POS] = VB->ClipPtr; + + /* Build vertex headers: + */ + build_vertex_headers( draw, VB ); + + draw->in_vb = 1; + + /* Allocate the vertices: + */ + draw_allocate_vertices( draw, VB->Count ); + + /* Bind the vb outputs: + */ + vf_set_sources( draw->vf, VB->AttribPtr, 0 ); + + /* Build the hardware or prim-pipe vertices: + */ + vf_emit_vertices( draw->vf, VB->Count, draw->verts ); + + + for (i = 0; i < VB->PrimitiveCount; i++) { + + GLenum mode = VB->Primitive[i].mode; + GLuint start = VB->Primitive[i].start; + GLuint length, first, incr; + + /* Trim the primitive down to a legal size. + */ + draw_prim_info( mode, &first, &incr ); + length = trim( VB->Primitive[i].count, first, incr ); + + if (!length) + continue; + + if (draw->prim != mode) + draw_set_prim( draw, mode ); + + if (VB->Elts) { + draw_indexed_prim( draw, + VB->Elts + start, + length ); + } + else { + draw_prim( draw, + start, + length ); + } + } + + draw_release_vertices( draw ); + draw->verts = NULL; + draw->in_vb = 0; +} + +void draw_set_viewport( struct draw_context *draw, + const GLfloat *scale, + const GLfloat *translate ) +{ + assert(!draw->in_vb); + vf_set_vp_scale_translate( draw->vf, scale, translate ); +} + + + +struct draw_context *draw_create( struct generic_context *generic ) +{ + struct draw_context *draw = CALLOC_STRUCT( draw_context ); + draw->generic = generic; + draw->vf = vf_create( GL_TRUE ); + + return draw; +} + + +void draw_destroy( struct draw_context *draw ) +{ + if (draw->header.storage) + ALIGN_FREE( draw->header.storage ); + + vf_destroy( draw->vf ); + + FREE( draw ); +} + +#define EMIT_ATTR( ATTR, STYLE ) \ +do { \ + draw->attrs[draw->nr_attrs].attrib = ATTR; \ + draw->attrs[draw->nr_attrs].format = STYLE; \ + draw->nr_attrs++; \ +} while (0) + + +void draw_set_vertex_attributes( struct draw_context *draw, + const GLuint *attrs, + GLuint nr_attrs ) +{ + GLuint i; + + draw->nr_attrs = 0; + + EMIT_ATTR(VF_ATTRIB_VERTEX_HEADER, EMIT_1F); + EMIT_ATTR(VF_ATTRIB_CLIP_POS, EMIT_4F); + + assert(attrs[0] == VF_ATTRIB_POS); + EMIT_ATTR(attrs[0], EMIT_4F_VIEWPORT); + + for (i = 1; i < nr_attrs; i++) + EMIT_ATTR(attrs[i], EMIT_4F); + + draw->vertex_size = vf_set_vertex_attributes( draw->vf, draw->attrs, draw->nr_attrs, 0 ); +} + + diff --git a/src/mesa/pipe/softpipe/g_draw.h b/src/mesa/pipe/softpipe/g_draw.h new file mode 100644 index 0000000000..78c93b4df7 --- /dev/null +++ b/src/mesa/pipe/softpipe/g_draw.h @@ -0,0 +1,56 @@ + +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/* Authors: Keith Whitwell <keith@tungstengraphics.com> + */ + +#ifndef G_DRAW_H +#define G_DRAW_H + +#include "glheader.h" +#include "softpipe/sp_state.h" + + +struct draw_context; + +struct draw_context *draw_create( struct generic_context *generic ); + +void draw_destroy( struct draw_context *draw ); + +void draw_set_viewport( struct draw_context *draw, + const GLfloat *scale, + const GLfloat *translate ); + +void draw_set_vertex_attributes( struct draw_context *draw, + const GLuint *attrs, + GLuint nr_attrs ); + +void draw_vb(struct draw_context *draw, + struct vertex_buffer *VB ); + +#endif diff --git a/src/mesa/pipe/softpipe/g_headers.h b/src/mesa/pipe/softpipe/g_headers.h new file mode 100644 index 0000000000..96ff52a453 --- /dev/null +++ b/src/mesa/pipe/softpipe/g_headers.h @@ -0,0 +1,116 @@ +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/* Authors: Keith Whitwell <keith@tungstengraphics.com> + */ +#ifndef G_HEADERS_H +#define G_HEADERS_H + +#define PRIM_POINT 1 +#define PRIM_LINE 2 +#define PRIM_TRI 3 + +struct prim_header { + GLfloat det; + struct vertex_header *v[3]; +}; + +/* Carry some useful information around with the vertices in the prim + * pipe. + */ +struct vertex_header { + GLuint clipmask:12; + GLuint edgeflag:1; + GLuint pad:19; + + GLfloat clip[4]; + + GLfloat data[][4]; /* Note variable size */ +}; + + + + + +/* The rasterizer generates 2x2 quads of fragment and feeds them to + * the current fp_machine (see below). + */ +#define QUAD_BOTTOM_LEFT 0 +#define QUAD_BOTTOM_RIGHT 1 +#define QUAD_TOP_LEFT 2 +#define QUAD_TOP_RIGHT 3 +#define QUAD_SIZE (2*2) + +#define MASK_BOTTOM_LEFT 0x1 +#define MASK_BOTTOM_RIGHT 0x2 +#define MASK_TOP_LEFT 0x4 +#define MASK_TOP_RIGHT 0x8 +#define MASK_ALL 0xf + + +#define NUM_CHANNELS 4 /* avoid confusion between 4 pixels and 4 channels */ + + +struct setup_coefficient { + GLfloat a0[NUM_CHANNELS]; /* in an xyzw layout */ + GLfloat dadx[NUM_CHANNELS]; + GLfloat dady[NUM_CHANNELS]; +}; + + + +/* Encodes everything we need to know about a 2x2 pixel block. Uses + * "Channel-Serial" or "SoA" layout. + * + * Will expand to include non-attribute things like AA coverage and + * maybe prefetched depth from the depth buffer. + */ +struct quad_header { + GLint x0; + GLint y0; + GLuint mask; + GLuint facing; /**< Front or back facing? */ + + struct { + GLfloat color[4][QUAD_SIZE]; /* rrrr, gggg, bbbb, aaaa */ + GLfloat depth[QUAD_SIZE]; + } outputs; + + const struct setup_coefficient *coef; + + const enum interp_mode *interp; /* XXX: this information should be + * encoded in fragment program DECL + * statements. */ + + GLuint nr_attrs; +}; + + + + + +#endif diff --git a/src/mesa/pipe/softpipe/g_prim.h b/src/mesa/pipe/softpipe/g_prim.h new file mode 100644 index 0000000000..e3b2c5ea2f --- /dev/null +++ b/src/mesa/pipe/softpipe/g_prim.h @@ -0,0 +1,90 @@ +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/* Authors: Keith Whitwell <keith@tungstengraphics.com> + */ + +#ifndef G_PRIM_H +#define G_PRIM_H + +#include "glheader.h" +#include "g_headers.h" + +struct generic_context; + +struct prim_stage *prim_setup( struct generic_context *context ); +struct prim_stage *prim_unfilled( struct generic_context *context ); +struct prim_stage *prim_twoside( struct generic_context *context ); +struct prim_stage *prim_offset( struct generic_context *context ); +struct prim_stage *prim_clip( struct generic_context *context ); +struct prim_stage *prim_flatshade( struct generic_context *context ); +struct prim_stage *prim_cull( struct generic_context *context ); + + +/* Internal structs and helpers for the primitive clip/setup pipeline: + */ +struct prim_stage { + struct generic_context *generic; + + struct prim_stage *next; + + struct vertex_header **tmp; + GLuint nr_tmps; + + void (*begin)( struct prim_stage * ); + + void (*point)( struct prim_stage *, + struct prim_header * ); + + void (*line)( struct prim_stage *, + struct prim_header * ); + + void (*tri)( struct prim_stage *, + struct prim_header * ); + + void (*end)( struct prim_stage * ); +}; + + + +/* Get a writeable copy of a vertex: + */ +static INLINE struct vertex_header * +dup_vert( struct prim_stage *stage, + const struct vertex_header *vert, + GLuint idx ) +{ + struct vertex_header *tmp = stage->tmp[idx]; + memcpy(tmp, vert, stage->generic->prim.vertex_size ); + return tmp; +} + +void prim_free_tmps( struct prim_stage *stage ); +void prim_alloc_tmps( struct prim_stage *stage, GLuint nr ); + + +#endif diff --git a/src/mesa/pipe/softpipe/g_prim_clip.c b/src/mesa/pipe/softpipe/g_prim_clip.c new file mode 100644 index 0000000000..742def9c7d --- /dev/null +++ b/src/mesa/pipe/softpipe/g_prim_clip.c @@ -0,0 +1,429 @@ +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/* Authors: Keith Whitwell <keith@tungstengraphics.com> + */ + +#include "imports.h" +#include "macros.h" + +#include "g_context.h" +#include "g_prim.h" + +struct clipper { + struct prim_stage stage; + + GLuint active_user_planes; +}; + +/* This is a bit confusing: + */ +static INLINE struct clipper *clipper_stage( struct prim_stage *stage ) +{ + return (struct clipper *)stage; +} + + +#define LINTERP(T, OUT, IN) ((OUT) + (T) * ((IN) - (OUT))) + + +/* All attributes are float[4], so this is easy: + */ +static void interp_attr( GLfloat *fdst, + GLfloat t, + const GLfloat *fin, + const GLfloat *fout ) +{ + fdst[0] = LINTERP( t, fout[0], fin[0] ); + fdst[1] = LINTERP( t, fout[1], fin[1] ); + fdst[2] = LINTERP( t, fout[2], fin[2] ); + fdst[3] = LINTERP( t, fout[3], fin[3] ); +} + + + + +/* Interpolate between two vertices to produce a third. + */ +static void interp( struct clipper *clip, + struct vertex_header *dst, + GLfloat t, + const struct vertex_header *out, + const struct vertex_header *in ) +{ + const GLuint nr_attrs = clip->stage.generic->nr_attrs; + GLuint j; + + /* Vertex header. + */ + { + dst->clipmask = 0; + dst->edgeflag = 0; + dst->pad = 0; + } + + /* Clip coordinates: interpolate normally + */ + { + interp_attr(dst->clip, t, in->clip, out->clip); + } + + /* Do the projective divide and insert window coordinates: + */ + { + const GLfloat *pos = dst->clip; + const GLfloat *scale = clip->stage.generic->viewport.scale; + const GLfloat *trans = clip->stage.generic->viewport.translate; + GLfloat oow; + + oow = 1.0 / pos[3]; + + dst->data[0][0] = pos[0] * oow * scale[0] + trans[0]; + dst->data[0][1] = pos[1] * oow * scale[1] + trans[1]; + dst->data[0][2] = pos[2] * oow * scale[2] + trans[2]; + dst->data[0][3] = oow; + } + + + /* Other attributes + */ + for (j = 1; j < nr_attrs-1; j++) { + interp_attr(dst->data[j], t, in->data[j], out->data[j]); + } +} + + +#define CLIP_USER_BIT 0x40 +#define CLIP_CULL_BIT 0x80 + + +static INLINE GLfloat dot4( const GLfloat *a, + const GLfloat *b ) +{ + GLfloat result = (a[0]*b[0] + + a[1]*b[1] + + a[2]*b[2] + + a[3]*b[3]); + + return result; +} + + +#if 0 +static INLINE void do_tri( struct prim_stage *next, + struct prim_header *header ) +{ + GLuint i; + for (i = 0; i < 3; i++) { + GLfloat *ndc = header->v[i]->data[0]; + _mesa_printf("ndc %f %f %f\n", ndc[0], ndc[1], ndc[2]); + assert(ndc[0] >= -1 && ndc[0] <= 641); + assert(ndc[1] >= 30 && ndc[1] <= 481); + } + _mesa_printf("\n"); + next->tri(next, header); +} +#endif + + +static void emit_poly( struct prim_stage *stage, + struct vertex_header **inlist, + GLuint n ) +{ + struct prim_header header; + GLuint i; + + for (i = 2; i < n; i++) { + header.v[0] = inlist[0]; + header.v[1] = inlist[i-1]; + header.v[2] = inlist[i]; + + { + GLuint tmp0 = header.v[0]->edgeflag; + GLuint tmp2 = header.v[2]->edgeflag; + + if (i != 2) header.v[0]->edgeflag = 0; + if (i != n-1) header.v[2]->edgeflag = 0; + + stage->next->tri( stage->next, &header ); + + header.v[0]->edgeflag = tmp0; + header.v[2]->edgeflag = tmp2; + } + } +} + + +#if 0 +static void emit_poly( struct prim_stage *stage ) +{ + GLuint i; + + for (i = 2; i < n; i++) { + header->v[0] = inlist[0]; + header->v[1] = inlist[i-1]; + header->v[2] = inlist[i]; + + stage->next->tri( stage->next, header ); + } +} +#endif + + +/* Clip a triangle against the viewport and user clip planes. + */ +static void +do_clip_tri( struct prim_stage *stage, + struct prim_header *header, + GLuint clipmask ) +{ + struct clipper *clipper = clipper_stage( stage ); + struct vertex_header *a[MAX_CLIPPED_VERTICES]; + struct vertex_header *b[MAX_CLIPPED_VERTICES]; + struct vertex_header **inlist = a; + struct vertex_header **outlist = b; + GLuint tmpnr = 0; + GLuint n = 3; + GLuint i; + + inlist[0] = header->v[0]; + inlist[1] = header->v[1]; + inlist[2] = header->v[2]; + + /* XXX: Note stupid hack to deal with tnl's 8-bit clipmask. Remove + * this once we correctly use 16bit masks for userclip planes. + */ + clipmask &= ~CLIP_CULL_BIT; + if (clipmask & CLIP_USER_BIT) { + clipmask &= ~CLIP_USER_BIT; + clipmask |= clipper->active_user_planes; + } + + while (clipmask && n >= 3) { + GLuint plane_idx = ffs(clipmask)-1; + const GLfloat *plane = clipper->stage.generic->plane[plane_idx]; + struct vertex_header *vert_prev = inlist[0]; + GLfloat dp_prev = dot4( vert_prev->clip, plane ); + GLuint outcount = 0; + + clipmask &= ~(1<<plane_idx); + + inlist[n] = inlist[0]; /* prevent rotation of vertices */ + + for (i = 1; i <= n; i++) { + struct vertex_header *vert = inlist[i]; + + GLfloat dp = dot4( vert->clip, plane ); + + if (!IS_NEGATIVE(dp_prev)) { + outlist[outcount++] = vert_prev; + } + + if (DIFFERENT_SIGNS(dp, dp_prev)) { + struct vertex_header *new_vert = clipper->stage.tmp[tmpnr++]; + outlist[outcount++] = new_vert; + + if (IS_NEGATIVE(dp)) { + /* Going out of bounds. Avoid division by zero as we + * know dp != dp_prev from DIFFERENT_SIGNS, above. + */ + GLfloat t = dp / (dp - dp_prev); + interp( clipper, new_vert, t, vert, vert_prev ); + + /* Force edgeflag true in this case: + */ + new_vert->edgeflag = 1; + } else { + /* Coming back in. + */ + GLfloat t = dp_prev / (dp_prev - dp); + interp( clipper, new_vert, t, vert_prev, vert ); + + /* Copy starting vert's edgeflag: + */ + new_vert->edgeflag = vert_prev->edgeflag; + } + } + + vert_prev = vert; + dp_prev = dp; + } + + { + struct vertex_header **tmp = inlist; + inlist = outlist; + outlist = tmp; + n = outcount; + } + } + + /* Emit the polygon as triangles to the setup stage: + */ + if (n >= 3) + emit_poly( stage, inlist, n ); +} + + +/* Clip a line against the viewport and user clip planes. + */ +static void +do_clip_line( struct prim_stage *stage, + struct prim_header *header, + GLuint clipmask ) +{ + struct clipper *clipper = clipper_stage( stage ); + struct vertex_header *v0 = header->v[0]; + struct vertex_header *v1 = header->v[1]; + const GLfloat *pos0 = v0->clip; + const GLfloat *pos1 = v1->clip; + GLfloat t0 = 0; + GLfloat t1 = 0; + + /* XXX: Note stupid hack to deal with tnl's 8-bit clipmask. Remove + * this once we correctly use 16bit masks for userclip planes. + */ + clipmask &= ~CLIP_CULL_BIT; + if (clipmask & CLIP_USER_BIT) { + clipmask &= ~CLIP_USER_BIT; + clipmask |= clipper->active_user_planes; + } + + while (clipmask) { + GLuint plane_idx = ffs(clipmask)-1; + const GLfloat *plane = clipper->stage.generic->plane[plane_idx]; + + clipmask &= ~(1<<plane_idx); + + const GLfloat dp0 = dot4( pos0, plane ); + const GLfloat dp1 = dot4( pos1, plane ); + + if (dp1 < 0) { + GLfloat t = dp1 / (dp1 - dp0); + if (t > t1) t1 = t; + } + + if (dp0 < 0) { + GLfloat t = dp0 / (dp0 - dp1); + if (t > t0) t0 = t; + } + + if (t0 + t1 >= 1.0) + return; /* discard */ + } + + if (v0->clipmask) { + interp( clipper, stage->tmp[0], t0, v0, v1 ); + header->v[0] = stage->tmp[0]; + } + + if (v1->clipmask) { + interp( clipper, stage->tmp[1], t1, v1, v0 ); + header->v[1] = stage->tmp[1]; + } + + stage->next->line( stage->next, header ); +} + + + +static void clip_begin( struct prim_stage *stage ) +{ + struct clipper *clipper = clipper_stage(stage); + GLuint nr = stage->generic->nr_planes; + + /* Hacky bitmask to use when we hit CLIP_USER_BIT: + */ + clipper->active_user_planes = ((1<<nr)-1) & ~((1<<6)-1); + + stage->next->begin( stage->next ); +} + +static void +clip_point( struct prim_stage *stage, + struct prim_header *header ) +{ + if (header->v[0]->clipmask == 0) + stage->next->point( stage->next, header ); +} + + +static void +clip_line( struct prim_stage *stage, + struct prim_header *header ) +{ + GLuint clipmask = (header->v[0]->clipmask | + header->v[1]->clipmask); + + if (clipmask == 0) { + stage->next->line( stage->next, header ); + } + else if ((header->v[0]->clipmask & + header->v[1]->clipmask) == 0) { + do_clip_line(stage, header, clipmask); + } +} + + +static void +clip_tri( struct prim_stage *stage, + struct prim_header *header ) +{ + GLuint clipmask = (header->v[0]->clipmask | + header->v[1]->clipmask | + header->v[2]->clipmask); + + if (clipmask == 0) { + stage->next->tri( stage->next, header ); + } + else if ((header->v[0]->clipmask & + header->v[1]->clipmask & + header->v[2]->clipmask) == 0) { + do_clip_tri(stage, header, clipmask); + } +} + +static void clip_end( struct prim_stage *stage ) +{ + stage->next->end( stage->next ); +} + + +struct prim_stage *prim_clip( struct generic_context *generic ) +{ + struct clipper *clipper = CALLOC_STRUCT(clipper); + + prim_alloc_tmps( &clipper->stage, MAX_CLIPPED_VERTICES ); + + clipper->stage.generic = generic; + clipper->stage.begin = clip_begin; + clipper->stage.point = clip_point; + clipper->stage.line = clip_line; + clipper->stage.tri = clip_tri; + clipper->stage.end = clip_end; + + return &clipper->stage; +} diff --git a/src/mesa/pipe/softpipe/g_prim_cull.c b/src/mesa/pipe/softpipe/g_prim_cull.c new file mode 100644 index 0000000000..633fbcc492 --- /dev/null +++ b/src/mesa/pipe/softpipe/g_prim_cull.c @@ -0,0 +1,119 @@ +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/* Authors: Keith Whitwell <keith@tungstengraphics.com> + */ +#include "imports.h" + +#include "g_context.h" +#include "g_prim.h" + + + +struct cull_stage { + struct prim_stage stage; + GLuint mode; +}; + + + +static INLINE struct cull_stage *cull_stage( struct prim_stage *stage ) +{ + return (struct cull_stage *)stage; +} + + +static void cull_begin( struct prim_stage *stage ) +{ + struct cull_stage *cull = cull_stage(stage); + + cull->mode = stage->generic->setup.cull_mode; + + stage->next->begin( stage->next ); +} + + +static void cull_tri( struct prim_stage *stage, + struct prim_header *header ) +{ + /* Window coords: */ + GLfloat *v0 = (GLfloat *)&(header->v[0]->data[0]); + GLfloat *v1 = (GLfloat *)&(header->v[1]->data[0]); + GLfloat *v2 = (GLfloat *)&(header->v[2]->data[0]); + + GLfloat ex = v0[0] - v2[0]; + GLfloat ey = v0[1] - v2[1]; + GLfloat fx = v1[0] - v2[0]; + GLfloat fy = v1[1] - v2[1]; + + header->det = ex * fy - ey * fx; + + _mesa_printf("%s %f\n", __FUNCTION__, header->det ); + + if (header->det != 0) { + GLuint mode = (header->det < 0) ? WINDING_CW : WINDING_CCW; + + if ((mode & cull_stage(stage)->mode) == 0) + stage->next->tri( stage->next, header ); + } +} + + +static void cull_line( struct prim_stage *stage, + struct prim_header *header ) +{ + stage->next->line( stage->next, header ); +} + + +static void cull_point( struct prim_stage *stage, + struct prim_header *header ) +{ + stage->next->point( stage->next, header ); +} + +static void cull_end( struct prim_stage *stage ) +{ + stage->next->end( stage->next ); +} + +struct prim_stage *prim_cull( struct generic_context *generic ) +{ + struct cull_stage *cull = CALLOC_STRUCT(cull_stage); + + prim_alloc_tmps( &cull->stage, 0 ); + + cull->stage.generic = generic; + cull->stage.next = NULL; + cull->stage.begin = cull_begin; + cull->stage.point = cull_point; + cull->stage.line = cull_line; + cull->stage.tri = cull_tri; + cull->stage.end = cull_end; + + return &cull->stage; +} diff --git a/src/mesa/pipe/softpipe/g_prim_flatshade.c b/src/mesa/pipe/softpipe/g_prim_flatshade.c new file mode 100644 index 0000000000..1974a64fa8 --- /dev/null +++ b/src/mesa/pipe/softpipe/g_prim_flatshade.c @@ -0,0 +1,149 @@ +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/* Authors: Keith Whitwell <keith@tungstengraphics.com> + */ +#include "imports.h" + +#include "g_context.h" +#include "g_prim.h" + + +struct flatshade_stage { + struct prim_stage stage; + + const GLuint *lookup; +}; + + + +static INLINE struct flatshade_stage *flatshade_stage( struct prim_stage *stage ) +{ + return (struct flatshade_stage *)stage; +} + + +static void flatshade_begin( struct prim_stage *stage ) +{ + stage->next->begin( stage->next ); +} + + + +static INLINE void copy_attr( GLuint attr, + struct vertex_header *dst, + const struct vertex_header *src ) +{ + if (attr) { + memcpy( dst->data[attr], + src->data[attr], + sizeof(src->data[0]) ); + } +} + +static void copy_colors( struct prim_stage *stage, + struct vertex_header *dst, + const struct vertex_header *src ) +{ + struct flatshade_stage *flatshade = flatshade_stage(stage); + const GLuint *lookup = flatshade->lookup; + + copy_attr( lookup[VF_ATTRIB_COLOR0], dst, src ); + copy_attr( lookup[VF_ATTRIB_COLOR1], dst, src ); + copy_attr( lookup[VF_ATTRIB_BFC0], dst, src ); + copy_attr( lookup[VF_ATTRIB_BFC1], dst, src ); +} + + + +/* Flatshade tri. Required for clipping and when unfilled tris are + * active, otherwise handled by hardware. + */ +static void flatshade_tri( struct prim_stage *stage, + struct prim_header *header ) +{ + struct prim_header tmp; + + tmp.det = header->det; + tmp.v[0] = dup_vert(stage, header->v[0], 0); + tmp.v[1] = dup_vert(stage, header->v[1], 1); + tmp.v[2] = header->v[2]; + + copy_colors(stage, tmp.v[0], tmp.v[2]); + copy_colors(stage, tmp.v[1], tmp.v[2]); + + stage->next->tri( stage->next, &tmp ); +} + + +/* Flatshade line. Required for clipping. + */ +static void flatshade_line( struct prim_stage *stage, + struct prim_header *header ) +{ + struct prim_header tmp; + + tmp.v[0] = dup_vert(stage, header->v[0], 0); + tmp.v[1] = header->v[1]; + + copy_colors(stage, tmp.v[0], tmp.v[1]); + + stage->next->line( stage->next, &tmp ); +} + + +static void flatshade_point( struct prim_stage *stage, + struct prim_header *header ) +{ + stage->next->point( stage->next, header ); +} + +static void flatshade_end( struct prim_stage *stage ) +{ + stage->next->end( stage->next ); +} + +struct prim_stage *prim_flatshade( struct generic_context *generic ) +{ + struct flatshade_stage *flatshade = CALLOC_STRUCT(flatshade_stage); + + prim_alloc_tmps( &flatshade->stage, 2 ); + + flatshade->stage.generic = generic; + flatshade->stage.next = NULL; + flatshade->stage.begin = flatshade_begin; + flatshade->stage.point = flatshade_point; + flatshade->stage.line = flatshade_line; + flatshade->stage.tri = flatshade_tri; + flatshade->stage.end = flatshade_end; + + flatshade->lookup = generic->vf_attr_to_slot; + + return &flatshade->stage; +} + + diff --git a/src/mesa/pipe/softpipe/g_prim_offset.c b/src/mesa/pipe/softpipe/g_prim_offset.c new file mode 100644 index 0000000000..801ce9a441 --- /dev/null +++ b/src/mesa/pipe/softpipe/g_prim_offset.c @@ -0,0 +1,157 @@ +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/* Authors: Keith Whitwell <keith@tungstengraphics.com> + */ +#include "imports.h" +#include "macros.h" + +#include "g_context.h" +#include "g_prim.h" + + + +struct offset_stage { + struct prim_stage stage; + + GLuint hw_data_offset; + + GLfloat scale; + GLfloat units; +}; + + + +static INLINE struct offset_stage *offset_stage( struct prim_stage *stage ) +{ + return (struct offset_stage *)stage; +} + + +static void offset_begin( struct prim_stage *stage ) +{ + struct offset_stage *offset = offset_stage(stage); + + offset->units = stage->generic->setup.offset_units; + offset->scale = stage->generic->setup.offset_scale; + + stage->next->begin( stage->next ); +} + + +/* Offset tri. Some hardware can handle this, but not usually when + * doing unfilled rendering. + */ +static void do_offset_tri( struct prim_stage *stage, + struct prim_header *header ) +{ + struct offset_stage *offset = offset_stage(stage); + GLfloat inv_det = 1.0 / header->det; + + /* Window coords: + */ + GLfloat *v0 = (GLfloat *)&(header->v[0]->data[0]); + GLfloat *v1 = (GLfloat *)&(header->v[1]->data[0]); + GLfloat *v2 = (GLfloat *)&(header->v[2]->data[0]); + + GLfloat ex = v0[0] - v2[2]; + GLfloat fx = v1[0] - v2[2]; + GLfloat ey = v0[1] - v2[2]; + GLfloat fy = v1[1] - v2[2]; + GLfloat ez = v0[2] - v2[2]; + GLfloat fz = v1[2] - v2[2]; + + GLfloat a = ey*fz - ez*fy; + GLfloat b = ez*fx - ex*fz; + + GLfloat ac = a * inv_det; + GLfloat bc = b * inv_det; + GLfloat zoffset; + + if ( ac < 0.0f ) ac = -ac; + if ( bc < 0.0f ) bc = -bc; + + zoffset = offset->units + MAX2( ac, bc ) * offset->scale; + + v0[2] += zoffset; + v1[2] += zoffset; + v2[2] += zoffset; + + stage->next->tri( stage->next, header ); +} + + +static void offset_tri( struct prim_stage *stage, + struct prim_header *header ) +{ + struct prim_header tmp; + + tmp.det = header->det; + tmp.v[0] = dup_vert(stage, header->v[0], 0); + tmp.v[1] = dup_vert(stage, header->v[1], 1); + tmp.v[2] = dup_vert(stage, header->v[2], 2); + + do_offset_tri( stage->next, &tmp ); +} + + + +static void offset_line( struct prim_stage *stage, + struct prim_header *header ) +{ + stage->next->line( stage->next, header ); +} + + +static void offset_point( struct prim_stage *stage, + struct prim_header *header ) +{ + stage->next->point( stage->next, header ); +} + + +static void offset_end( struct prim_stage *stage ) +{ + stage->next->end( stage->next ); +} + +struct prim_stage *prim_offset( struct generic_context *generic ) +{ + struct offset_stage *offset = CALLOC_STRUCT(offset_stage); + + prim_alloc_tmps( &offset->stage, 3 ); + + offset->stage.generic = generic; + offset->stage.next = NULL; + offset->stage.begin = offset_begin; + offset->stage.point = offset_point; + offset->stage.line = offset_line; + offset->stage.tri = offset_tri; + offset->stage.end = offset_end; + + return &offset->stage; +} diff --git a/src/mesa/pipe/softpipe/g_prim_setup.c b/src/mesa/pipe/softpipe/g_prim_setup.c new file mode 100644 index 0000000000..41e1381a60 --- /dev/null +++ b/src/mesa/pipe/softpipe/g_prim_setup.c @@ -0,0 +1,888 @@ +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/* Authors: Keith Whitwell <keith@tungstengraphics.com> + */ + +#include "imports.h" +#include "macros.h" + +#include "g_context.h" +#include "g_prim.h" +#include "g_tile.h" + + +/** + * Triangle edge info + */ +struct edge { + GLfloat dx; /* X(v1) - X(v0), used only during setup */ + GLfloat dy; /* Y(v1) - Y(v0), used only during setup */ + GLfloat dxdy; /* dx/dy */ + GLfloat sx; /* first sample point x coord */ + GLfloat sy; + GLint lines; /* number of lines on this edge */ +}; + + +/** + * Triangle setup info (derived from prim_stage). + * Also used for line drawing (taking some liberties). + */ +struct setup_stage { + struct prim_stage stage; /**< This must be first */ + + /* Vertices are just an array of floats making up each attribute in + * turn. Currently fixed at 4 floats, but should change in time. + * Codegen will help cope with this. + */ + const struct vertex_header *vmax; + const struct vertex_header *vmid; + const struct vertex_header *vmin; + const struct vertex_header *vprovoke; + + struct edge ebot; + struct edge etop; + struct edge emaj; + + GLfloat oneoverarea; + + struct setup_coefficient coef[FRAG_ATTRIB_MAX]; + struct quad_header quad; + + struct { + GLint left[2]; /**< [0] = row0, [1] = row1 */ + GLint right[2]; + GLint y; + GLuint y_flags; + GLuint mask; /**< mask of MASK_BOTTOM/TOP_LEFT/RIGHT bits */ + } span; +}; + + + +/** + * Basically a cast wrapper. + */ +static inline struct setup_stage *setup_stage( struct prim_stage *stage ) +{ + return (struct setup_stage *)stage; +} + + +/** + * Given an X or Y coordinate, return the block/quad coordinate that it + * belongs to. + */ +static inline GLint block( GLint x ) +{ + return x & ~1; +} + + + +static void setup_begin( struct prim_stage *stage ) +{ + setup_stage(stage)->quad.nr_attrs = stage->generic->nr_frag_attrs; +} + + +/** + * Run shader on a quad/block. + */ +static void run_shader_block( struct setup_stage *setup, + GLint x, GLint y, GLuint mask ) +{ + setup->quad.x0 = x; + setup->quad.y0 = y; + setup->quad.mask = mask; + + quad_shade( setup->stage.generic, &setup->quad ); +} + + +/** + * Compute mask which indicates which pixels in the 2x2 quad are actually inside + * the triangle's bounds. + * + * this is pretty nasty... may need to rework flush_spans again to + * fix it, if possible. + */ +static GLuint calculate_mask( struct setup_stage *setup, + GLint x ) +{ + GLuint mask = 0; + + if (x >= setup->span.left[0] && x < setup->span.right[0]) + mask |= MASK_BOTTOM_LEFT; + + if (x >= setup->span.left[1] && x < setup->span.right[1]) + mask |= MASK_TOP_LEFT; + + if (x+1 >= setup->span.left[0] && x+1 < setup->span.right[0]) + mask |= MASK_BOTTOM_RIGHT; + + if (x+1 >= setup->span.left[1] && x+1 < setup->span.right[1]) + mask |= MASK_TOP_RIGHT; + + return mask; +} + + +/** + * Render a horizontal span of quads + */ +static void flush_spans( struct setup_stage *setup ) +{ + GLint minleft, maxright; + GLint x; + + switch (setup->span.y_flags) { + case 3: + minleft = MIN2(setup->span.left[0], setup->span.left[1]); + maxright = MAX2(setup->span.right[0], setup->span.right[1]); + break; + + case 1: + minleft = setup->span.left[0]; + maxright = setup->span.right[0]; + break; + + case 2: + minleft = setup->span.left[1]; + maxright = setup->span.right[1]; + break; + + default: + return; + } + + + for (x = block(minleft); x <= block(maxright); ) + { + run_shader_block( setup, x, + setup->span.y, + calculate_mask( setup, x ) ); + x += 2; + } + + setup->span.y = 0; + setup->span.y_flags = 0; + setup->span.right[0] = 0; + setup->span.right[1] = 0; +} + + +static GLboolean setup_sort_vertices( struct setup_stage *setup, + const struct prim_header *prim ) +{ + const struct vertex_header *v0 = prim->v[0]; + const struct vertex_header *v1 = prim->v[1]; + const struct vertex_header *v2 = prim->v[2]; + + setup->vprovoke = v2; + + /* determine bottom to top order of vertices */ + { + GLfloat y0 = v0->data[0][1]; + GLfloat y1 = v1->data[0][1]; + GLfloat y2 = v2->data[0][1]; + if (y0 <= y1) { + if (y1 <= y2) { + /* y0<=y1<=y2 */ + setup->vmin = v0; + setup->vmid = v1; + setup->vmax = v2; + } + else if (y2 <= y0) { + /* y2<=y0<=y1 */ + setup->vmin = v2; + setup->vmid = v0; + setup->vmax = v1; + } + else { + /* y0<=y2<=y1 */ + setup->vmin = v0; + setup->vmid = v2; + setup->vmax = v1; + } + } + else { + if (y0 <= y2) { + /* y1<=y0<=y2 */ + setup->vmin = v1; + setup->vmid = v0; + setup->vmax = v2; + } + else if (y2 <= y1) { + /* y2<=y1<=y0 */ + setup->vmin = v2; + setup->vmid = v1; + setup->vmax = v0; + } + else { + /* y1<=y2<=y0 */ + setup->vmin = v1; + setup->vmid = v2; + setup->vmax = v0; + } + } + } + + setup->ebot.dx = setup->vmid->data[0][0] - setup->vmin->data[0][0]; + setup->ebot.dy = setup->vmid->data[0][1] - setup->vmin->data[0][1]; + setup->emaj.dx = setup->vmax->data[0][0] - setup->vmin->data[0][0]; + setup->emaj.dy = setup->vmax->data[0][1] - setup->vmin->data[0][1]; + setup->etop.dx = setup->vmax->data[0][0] - setup->vmid->data[0][0]; + setup->etop.dy = setup->vmax->data[0][1] - setup->vmid->data[0][1]; + + /* xxx: may need to adjust this sign according to the if-tree + * above: + * + * XXX: this is like 'det', but calculated from screen coords?? + */ + { + const GLfloat area = (setup->emaj.dx * setup->ebot.dy - + setup->ebot.dx * setup->emaj.dy); + + setup->oneoverarea = 1.0 / area; + } + + /* XXX need to know if this is a front or back-facing triangle: + * - the GLSL gl_FrontFacing fragment attribute (bool) + * - two-sided stencil test + */ + setup->quad.facing = 0; + + _mesa_printf("%s one-over-area %f\n", __FUNCTION__, setup->oneoverarea ); + + + return GL_TRUE; +} + + +/** + * Compute a0 for a constant-valued coefficient (GL_FLAT shading). + */ +static void const_coeff( struct setup_stage *setup, + GLuint slot, + GLuint i ) +{ + setup->coef[slot].dadx[i] = 0; + setup->coef[slot].dady[i] = 0; + + /* need provoking vertex info! + */ + setup->coef[slot].a0[i] = setup->vprovoke->data[slot][i]; +} + + +/** + * Compute a0, dadx and dady for a linearly interpolated coefficient, + * for a triangle. + */ +static void tri_linear_coeff( struct setup_stage *setup, + GLuint slot, + GLuint i) +{ + GLfloat botda = setup->vmid->data[slot][i] - setup->vmin->data[slot][i]; + GLfloat majda = setup->vmax->data[slot][i] - setup->vmin->data[slot][i]; + GLfloat a = setup->ebot.dy * majda - botda * setup->emaj.dy; + GLfloat b = setup->emaj.dx * botda - majda * setup->ebot.dx; + + setup->coef[slot].dadx[i] = a * setup->oneoverarea; + setup->coef[slot].dady[i] = b * setup->oneoverarea; + + /* calculate a0 as the value which would be sampled for the + * fragment at (0,0), taking into account that we want to sample at + * pixel centers, in other words (0.5, 0.5). + * + * this is neat but unfortunately not a good way to do things for + * triangles with very large values of dadx or dady as it will + * result in the subtraction and re-addition from a0 of a very + * large number, which means we'll end up loosing a lot of the + * fractional bits and precision from a0. the way to fix this is + * to define a0 as the sample at a pixel center somewhere near vmin + * instead - i'll switch to this later. + */ + setup->coef[slot].a0[i] = (setup->vmin->data[slot][i] - + (setup->coef[slot].dadx[i] * (setup->vmin->data[0][0] - 0.5) + + setup->coef[slot].dady[i] * (setup->vmin->data[0][1] - 0.5))); + + _mesa_printf("attr[%d].%c: %f dx:%f dy:%f\n", + slot, "xyzw"[i], + setup->coef[slot].a0[i], + setup->coef[slot].dadx[i], + setup->coef[slot].dady[i]); +} + + +/** + * Compute a0, dadx and dady for a perspective-corrected interpolant, + * for a triangle. + */ +static void tri_persp_coeff( struct setup_stage *setup, + GLuint slot, + GLuint i ) +{ + /* premultiply by 1/w: + */ + GLfloat mina = setup->vmin->data[slot][i] * setup->vmin->data[0][3]; + GLfloat mida = setup->vmid->data[slot][i] * setup->vmid->data[0][3]; + GLfloat maxa = setup->vmax->data[slot][i] * setup->vmax->data[0][3]; + + GLfloat botda = mida - mina; + GLfloat majda = maxa - mina; + GLfloat a = setup->ebot.dy * majda - botda * setup->emaj.dy; + GLfloat b = setup->emaj.dx * botda - majda * setup->ebot.dx; + + setup->coef[slot].dadx[i] = a * setup->oneoverarea; + setup->coef[slot].dady[i] = b * setup->oneoverarea; + setup->coef[slot].a0[i] = (mina - + (setup->coef[slot].dadx[i] * (setup->vmin->data[0][0] - 0.5) + + setup->coef[slot].dady[i] * (setup->vmin->data[0][1] - 0.5))); +} + + + +/** + * Compute the setup->coef[] array dadx, dady, a0 values. + * Must be called after setup->vmin,vmid,vmax,vprovoke are initialized. + */ +static void setup_tri_coefficients( struct setup_stage *setup ) +{ + const enum interp_mode *interp = setup->stage.generic->interp; + GLuint slot, j; + + /* z and w are done by linear interpolation: + */ + tri_linear_coeff(setup, 0, 2); + tri_linear_coeff(setup, 0, 3); + + /* setup interpolation for all the remaining attributes: + */ + for (slot = 1; slot < setup->quad.nr_attrs; slot++) { + switch (interp[slot]) { + case INTERP_CONSTANT: + for (j = 0; j < NUM_CHANNELS; j++) + const_coeff(setup, slot, j); + break; + + case INTERP_LINEAR: + for (j = 0; j < NUM_CHANNELS; j++) + tri_linear_coeff(setup, slot, j); + break; + + case INTERP_PERSPECTIVE: + for (j = 0; j < NUM_CHANNELS; j++) + tri_persp_coeff(setup, slot, j); + break; + } + } +} + + + +static void setup_tri_edges( struct setup_stage *setup ) +{ + GLfloat vmin_x = setup->vmin->data[0][0] + 0.5; + GLfloat vmid_x = setup->vmid->data[0][0] + 0.5; + + GLfloat vmin_y = setup->vmin->data[0][1] - 0.5; + GLfloat vmid_y = setup->vmid->data[0][1] - 0.5; + GLfloat vmax_y = setup->vmax->data[0][1] - 0.5; + + setup->emaj.sy = ceilf(vmin_y); + setup->emaj.lines = (GLint) ceilf(vmax_y - setup->emaj.sy); + setup->emaj.dxdy = setup->emaj.dx / setup->emaj.dy; + setup->emaj.sx = vmin_x + (setup->emaj.sy - vmin_y) * setup->emaj.dxdy; + + setup->etop.sy = ceilf(vmid_y); + setup->etop.lines = (GLint) ceilf(vmax_y - setup->etop.sy); + setup->etop.dxdy = setup->etop.dx / setup->etop.dy; + setup->etop.sx = vmid_x + (setup->etop.sy - vmid_y) * setup->etop.dxdy; + + setup->ebot.sy = ceilf(vmin_y); + setup->ebot.lines = (GLint) ceilf(vmid_y - setup->ebot.sy); + setup->ebot.dxdy = setup->ebot.dx / setup->ebot.dy; + setup->ebot.sx = vmin_x + (setup->ebot.sy - vmin_y) * setup->ebot.dxdy; +} + + +/** + * Render the upper or lower half of a triangle. + * Scissoring is applied here too. + */ +static void subtriangle( struct setup_stage *setup, + struct edge *eleft, + struct edge *eright, + GLuint lines ) +{ + GLint y, start_y, finish_y; + GLint sy = (GLint)eleft->sy; + + assert((GLint)eleft->sy == (GLint) eright->sy); + assert((GLint)eleft->sy >= 0); /* catch bug in x64? */ + + /* scissor y: + */ + if (setup->stage.generic->setup.scissor) { + start_y = sy; + finish_y = start_y + lines; + + if (start_y < setup->stage.generic->scissor.miny) + start_y = setup->stage.generic->scissor.miny; + + if (finish_y > setup->stage.generic->scissor.maxy) + finish_y = setup->stage.generic->scissor.maxy; + + start_y -= sy; + finish_y -= sy; + } + else { + start_y = 0; + finish_y = lines; + } + + _mesa_printf("%s %d %d\n", __FUNCTION__, start_y, finish_y); + + for (y = start_y; y < finish_y; y++) { + + /* avoid accumulating adds as floats don't have the precision to + * accurately iterate large triangle edges that way. luckily we + * can just multiply these days. + * + * this is all drowned out by the attribute interpolation anyway. + */ + GLint left = (GLint)(eleft->sx + y * eleft->dxdy); + GLint right = (GLint)(eright->sx + y * eright->dxdy); + + /* scissor x: + */ + if (setup->stage.generic->setup.scissor) { + if (left < setup->stage.generic->scissor.minx) + left = setup->stage.generic->scissor.minx; + + if (right > setup->stage.generic->scissor.maxx) + right = setup->stage.generic->scissor.maxx; + } + + if (left < right) { + GLint _y = sy+y; + if (block(_y) != setup->span.y) { + flush_spans(setup); + setup->span.y = block(_y); + } + + setup->span.left[_y&1] = left; + setup->span.right[_y&1] = right; + setup->span.y_flags |= 1<<(_y&1); + } + } + + + /* save the values so that emaj can be restarted: + */ + eleft->sx += lines * eleft->dxdy; + eright->sx += lines * eright->dxdy; + eleft->sy += lines; + eright->sy += lines; +} + + +/** + * Do setup for triangle rasterization, then render the triangle. + */ +static void setup_tri( struct prim_stage *stage, + struct prim_header *prim ) +{ + struct setup_stage *setup = setup_stage( stage ); + + _mesa_printf("%s\n", __FUNCTION__ ); + + setup_sort_vertices( setup, prim ); + setup_tri_coefficients( setup ); + setup_tri_edges( setup ); + + setup->span.y = 0; + setup->span.y_flags = 0; + setup->span.right[0] = 0; + setup->span.right[1] = 0; +// setup->span.z_mode = tri_z_mode( setup->ctx ); + +// init_constant_attribs( setup ); + + if (setup->oneoverarea < 0.0) { + /* emaj on left: + */ + subtriangle( setup, &setup->emaj, &setup->ebot, setup->ebot.lines ); + subtriangle( setup, &setup->emaj, &setup->etop, setup->etop.lines ); + } + else { + /* emaj on right: + */ + subtriangle( setup, &setup->ebot, &setup->emaj, setup->ebot.lines ); + subtriangle( setup, &setup->etop, &setup->emaj, setup->etop.lines ); + } + + flush_spans( setup ); +} + + + +/** + * Compute a0, dadx and dady for a linearly interpolated coefficient, + * for a line. + */ +static void +line_linear_coeff(struct setup_stage *setup, GLuint slot, GLuint i) +{ + const GLfloat dz = setup->vmax->data[slot][i] - setup->vmin->data[slot][i]; + const GLfloat dadx = dz * setup->emaj.dx * setup->oneoverarea; + const GLfloat dady = dz * setup->emaj.dy * setup->oneoverarea; + setup->coef[slot].dadx[i] = dadx; + setup->coef[slot].dady[i] = dady; + setup->coef[slot].a0[i] + = (setup->vmin->data[slot][i] - + (dadx * (setup->vmin->data[0][0] - 0.5) + + dady * (setup->vmin->data[0][1] - 0.5))); +} + + +/** + * Compute a0, dadx and dady for a perspective-corrected interpolant, + * for a line. + */ +static void +line_persp_coeff(struct setup_stage *setup, GLuint slot, GLuint i) +{ + /* XXX to do */ + line_linear_coeff(setup, slot, i); /* XXX temporary */ +} + + +/** + * Compute the setup->coef[] array dadx, dady, a0 values. + * Must be called after setup->vmin,vmax are initialized. + */ +static INLINE void +setup_line_coefficients(struct setup_stage *setup, struct prim_header *prim) +{ + const enum interp_mode *interp = setup->stage.generic->interp; + GLuint slot, j; + + /* use setup->vmin, vmax to point to vertices */ + setup->vprovoke = prim->v[1]; + setup->vmin = prim->v[0]; + setup->vmax = prim->v[1]; + + setup->emaj.dx = setup->vmax->data[0][0] - setup->vmin->data[0][0]; + setup->emaj.dy = setup->vmax->data[0][1] - setup->vmin->data[0][1]; + /* NOTE: this is not really 1/area */ + setup->oneoverarea = 1.0 / (setup->emaj.dx * setup->emaj.dx + + setup->emaj.dy * setup->emaj.dy); + + /* z and w are done by linear interpolation: + */ + line_linear_coeff(setup, 0, 2); + line_linear_coeff(setup, 0, 3); + + /* setup interpolation for all the remaining attributes: + */ + for (slot = 1; slot < setup->quad.nr_attrs; slot++) { + switch (interp[slot]) { + case INTERP_CONSTANT: + for (j = 0; j < NUM_CHANNELS; j++) + const_coeff(setup, slot, j); + break; + + case INTERP_LINEAR: + for (j = 0; j < NUM_CHANNELS; j++) + line_linear_coeff(setup, slot, j); + break; + + case INTERP_PERSPECTIVE: + for (j = 0; j < NUM_CHANNELS; j++) + line_persp_coeff(setup, slot, j); + break; + } + } +} + + +/** + * Plot a pixel in a line segment. + */ +static INLINE void +plot(struct setup_stage *setup, GLint x, GLint y) +{ + const GLint iy = y & 1; + const GLint ix = x & 1; + const GLint quadX = x - ix; + const GLint quadY = y - iy; + const GLint mask = (1 << ix) << (2 * iy); + + if (quadX != setup->quad.x0 || + quadY != setup->quad.y0) + { + /* flush prev quad, start new quad */ + + if (setup->quad.x0 != -1) + quad_shade(setup->stage.generic, &setup->quad); + + setup->quad.x0 = quadX; + setup->quad.y0 = quadY; + setup->quad.mask = 0x0; + } + + setup->quad.mask |= mask; +} + + + +/** + * Do setup for line rasterization, then render the line. + * XXX single-pixel width, no stipple, etc + * XXX no scissoring yet. + */ +static void +setup_line(struct prim_stage *stage, struct prim_header *prim) +{ + const struct vertex_header *v0 = prim->v[0]; + const struct vertex_header *v1 = prim->v[1]; + struct setup_stage *setup = setup_stage( stage ); + + GLint x0 = (GLint) v0->data[0][0]; + GLint x1 = (GLint) v1->data[0][0]; + GLint y0 = (GLint) v0->data[0][1]; + GLint y1 = (GLint) v1->data[0][1]; + GLint dx = x1 - x0; + GLint dy = y1 - y0; + GLint xstep, ystep; + + if (dx == 0 && dy == 0) + return; + + setup_line_coefficients(setup, prim); + + if (dx < 0) { + dx = -dx; /* make positive */ + xstep = -1; + } + else { + xstep = 1; + } + + if (dy < 0) { + dy = -dy; /* make positive */ + ystep = -1; + } + else { + ystep = 1; + } + + assert(dx >= 0); + assert(dy >= 0); + + setup->quad.x0 = setup->quad.y0 = -1; + setup->quad.mask = 0x0; + + if (dx > dy) { + /*** X-major line ***/ + GLint i; + const GLint errorInc = dy + dy; + GLint error = errorInc - dx; + const GLint errorDec = error - dx; + + for (i = 0; i < dx; i++) { + plot(setup, x0, y0); + + x0 += xstep; + if (error < 0) { + error += errorInc; + } + else { + error += errorDec; + y0 += ystep; + } + } + } + else { + /*** Y-major line ***/ + GLint i; + const GLint errorInc = dx + dx; + GLint error = errorInc - dy; + const GLint errorDec = error - dy; + + for (i = 0; i < dy; i++) { + plot(setup, x0, y0); + + y0 += ystep; + + if (error < 0) { + error += errorInc; + } + else { + error += errorDec; + x0 += xstep; + } + } + } + + /* draw final quad */ + if (setup->quad.mask) { + quad_shade(setup->stage.generic, &setup->quad); + } +} + + +/** + * Do setup for point rasterization, then render the point. + * Round or square points... + * XXX could optimize a lot for 1-pixel points. + */ +static void +setup_point(struct prim_stage *stage, struct prim_header *prim) +{ + struct setup_stage *setup = setup_stage( stage ); + GLfloat halfSize = 7.3; /*XXX this is a vertex attrib */ + GLfloat halfSizeSquared = halfSize * halfSize; + const struct vertex_header *v0 = prim->v[0]; + const GLfloat x = v0->data[FRAG_ATTRIB_WPOS][0]; + const GLfloat y = v0->data[FRAG_ATTRIB_WPOS][1]; + const GLint ixmin = block((GLint) (x - halfSize)); + const GLint ixmax = block((GLint) (x + halfSize)); + const GLint iymin = block((GLint) (y - halfSize)); + const GLint iymax = block((GLint) (y + halfSize)); + GLboolean round = GL_TRUE; + GLint ix, iy; + GLuint slot, j; + + /* For points, all interpolants are constant-valued. + * However, for point sprites, we'll need to setup texcoords appropriately. + * XXX: which coefficients are the texcoords??? + * We may do point sprites as textured quads... + * + * KW: We don't know which coefficients are texcoords - ultimately + * the choice of what interpolation mode to use for each attribute + * should be determined by the fragment program, using + * per-attribute declaration statements that include interpolation + * mode as a parameter. So either the fragment program will have + * to be adjusted for pointsprite vs normal point behaviour, or + * otherwise a special interpolation mode will have to be defined + * which matches the required behaviour for point sprites. But - + * the latter is not a feature of normal hardware, and as such + * probably should be ruled out on that basis. + */ + setup->vprovoke = prim->v[0]; + const_coeff(setup, 0, 2); + const_coeff(setup, 0, 3); + for (slot = 1; slot < setup->quad.nr_attrs; slot++) { + for (j = 0; j < NUM_CHANNELS; j++) + const_coeff(setup, slot, j); + } + + /* XXX need to clip against scissor bounds too */ + + for (iy = iymin; iy <= iymax; iy += 2) { + for (ix = ixmin; ix <= ixmax; ix += 2) { + + if (round) { + /* rounded points */ + /* XXX for GL_SMOOTH, need to compute per-fragment coverage too */ + GLfloat dx, dy; + + setup->quad.mask = 0x0; + + dx = (ix + 0.5) - x; + dy = (iy + 0.5) - y; + if (dx * dx + dy * dy <= halfSizeSquared) + setup->quad.mask |= MASK_BOTTOM_LEFT; + + dx = (ix + 1.5) - x; + dy = (iy + 0.5) - y; + if (dx * dx + dy * dy <= halfSizeSquared) + setup->quad.mask |= MASK_BOTTOM_RIGHT; + + dx = (ix + 0.5) - x; + dy = (iy + 1.5) - y; + if (dx * dx + dy * dy <= halfSizeSquared) + setup->quad.mask |= MASK_TOP_LEFT; + + dx = (ix + 1.5) - x; + dy = (iy + 1.5) - y; + if (dx * dx + dy * dy <= halfSizeSquared) + setup->quad.mask |= MASK_TOP_RIGHT; + } + else { + /* square points */ + setup->quad.mask = 0xf; + + if (ix + 0.5 < x - halfSize) + setup->quad.mask &= (MASK_BOTTOM_RIGHT | MASK_TOP_RIGHT); + + if (ix + 1.5 > x + halfSize) + setup->quad.mask &= (MASK_BOTTOM_LEFT | MASK_TOP_LEFT); + + if (iy + 0.5 < y - halfSize) + setup->quad.mask &= (MASK_TOP_LEFT | MASK_TOP_RIGHT); + + if (iy + 1.5 > y + halfSize) + setup->quad.mask &= (MASK_BOTTOM_LEFT | MASK_BOTTOM_RIGHT); + } + + if (setup->quad.mask) { + setup->quad.x0 = ix; + setup->quad.y0 = iy; + quad_shade( setup->stage.generic, &setup->quad ); + } + } + } +} + + + +static void setup_end( struct prim_stage *stage ) +{ +} + + +struct prim_stage *prim_setup( struct generic_context *generic ) +{ + struct setup_stage *setup = CALLOC_STRUCT(setup_stage); + + setup->stage.generic = generic; + setup->stage.begin = setup_begin; + setup->stage.point = setup_point; + setup->stage.line = setup_line; + setup->stage.tri = setup_tri; + setup->stage.end = setup_end; + + setup->quad.coef = setup->coef; + + return &setup->stage; +} diff --git a/src/mesa/pipe/softpipe/g_prim_setup.h b/src/mesa/pipe/softpipe/g_prim_setup.h new file mode 100644 index 0000000000..40a70c543e --- /dev/null +++ b/src/mesa/pipe/softpipe/g_prim_setup.h @@ -0,0 +1,121 @@ +/* + * Mesa 3-D graphics library + * Version: 6.5 + * + * Copyright (C) 1999-2005 Brian Paul All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN + * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +#ifndef S_TRI_H +#define S_TRI_H + +/* Vertices are just an array of floats, with all the attributes + * packed. We currently assume a layout like: + * + * attr[0][0..3] - window position + * attr[1..n][0..3] - remaining attributes. + * + * Attributes are assumed to be 4 floats wide but are packed so that + * all the enabled attributes run contiguously. + */ + +#include "glheader.h" +#include "imports.h" +#include "s_tri_public.h" +#include "s_context.h" + + + +struct tri_context; +struct fp_context; +struct be_context; + +/* Note the rasterizer does not take a GLcontext argument. This is + * deliberate. + */ +struct tri_context *tri_create_context( GLcontext *ctx ); + +void tri_destroy_context( struct tri_context *tri ); + +void tri_set_fp_context( struct tri_context *tri, + struct fp_context *fp, + void (*fp_run)( struct fp_context *fp, + const struct fp_inputs *, + struct fp_outputs * )); + + +void tri_set_be_context( struct tri_context *tri, + struct be_context *be, + void (*be_run)( struct be_context *be, + const struct fp_outputs * )); + +void tri_set_attribs( struct tri_context *tri, + const struct attr_info *info, + GLuint nr_attrib ); + +void tri_set_backface( struct tri_context *tri, + GLfloat backface ); + +void tri_set_scissor( struct tri_context *tri, + GLint x, + GLint y, + GLuint width, + GLuint height, + GLboolean enabled ); + +void tri_set_stipple( struct tri_context *tri, + const GLuint *pattern, + GLboolean enabled ); + +/* Unfilled triangles will be handled elsewhere (higher in the + * pipeline), as will things like stipple (lower in the pipeline). + */ + +void tri_triangle( struct tri_context *tri, + const struct vertex *v0, + const struct vertex *v1, + const struct vertex *v2 ); + +/* TODO: rasterize_line, rasterize_point?? + * How will linestipple work? + */ + + +#ifdef SETUP_PRIVATE + + + + + + +GLboolean tri_setup( struct tri_context *tri, + const struct vertex *v0, + const struct vertex *v1, + const struct vertex *v2 ); + +void tri_rasterize( struct tri_context *tri ); +void tri_rasterize_spans( struct tri_context *tri ); + + + + + + +#endif +#endif diff --git a/src/mesa/pipe/softpipe/g_prim_twoside.c b/src/mesa/pipe/softpipe/g_prim_twoside.c new file mode 100644 index 0000000000..334ae2f537 --- /dev/null +++ b/src/mesa/pipe/softpipe/g_prim_twoside.c @@ -0,0 +1,149 @@ +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/* Authors: Keith Whitwell <keith@tungstengraphics.com> + */ +#include "imports.h" +#include "g_context.h" +#include "g_prim.h" + + +struct twoside_stage { + struct prim_stage stage; + + GLfloat facing; + const GLuint *lookup; +}; + + +static INLINE struct twoside_stage *twoside_stage( struct prim_stage *stage ) +{ + return (struct twoside_stage *)stage; +} + + +static void twoside_begin( struct prim_stage *stage ) +{ + struct twoside_stage *twoside = twoside_stage(stage); + + twoside->facing = (stage->generic->setup.front_winding == WINDING_CW) ? -1 : 1; + + stage->next->begin( stage->next ); +} + + +static INLINE void copy_color( GLuint attr_dst, + GLuint attr_src, + struct vertex_header *v ) +{ + if (attr_dst && attr_src) { + memcpy( v->data[attr_dst], + v->data[attr_src], + sizeof(v->data[0]) ); + } +} + + +static struct vertex_header *copy_bfc( struct twoside_stage *twoside, + const struct vertex_header *v, + GLuint idx ) +{ + struct vertex_header *tmp = dup_vert( &twoside->stage, v, idx ); + + copy_color( twoside->lookup[VF_ATTRIB_COLOR0], + twoside->lookup[VF_ATTRIB_BFC0], + tmp ); + + copy_color( twoside->lookup[VF_ATTRIB_COLOR1], + twoside->lookup[VF_ATTRIB_BFC1], + tmp ); + + return tmp; +} + + +/* Twoside tri: + */ +static void twoside_tri( struct prim_stage *stage, + struct prim_header *header ) +{ + struct twoside_stage *twoside = twoside_stage(stage); + + if (header->det * twoside->facing < 0) { + struct prim_header tmp; + + tmp.det = header->det; + tmp.v[0] = copy_bfc(twoside, header->v[0], 0); + tmp.v[1] = copy_bfc(twoside, header->v[1], 1); + tmp.v[2] = copy_bfc(twoside, header->v[2], 2); + + stage->next->tri( stage->next, &tmp ); + } + else { + stage->next->tri( stage->next, header ); + } +} + + +static void twoside_line( struct prim_stage *stage, + struct prim_header *header ) +{ + stage->next->line( stage->next, header ); +} + + +static void twoside_point( struct prim_stage *stage, + struct prim_header *header ) +{ + stage->next->point( stage->next, header ); +} + +static void twoside_end( struct prim_stage *stage ) +{ + stage->next->end( stage->next ); +} + + + +struct prim_stage *prim_twoside( struct generic_context *generic ) +{ + struct twoside_stage *twoside = CALLOC_STRUCT(twoside_stage); + + prim_alloc_tmps( &twoside->stage, 3 ); + + twoside->stage.generic = generic; + twoside->stage.next = NULL; + twoside->stage.begin = twoside_begin; + twoside->stage.point = twoside_point; + twoside->stage.line = twoside_line; + twoside->stage.tri = twoside_tri; + twoside->stage.end = twoside_end; + + twoside->lookup = generic->vf_attr_to_slot; + + return &twoside->stage; +} diff --git a/src/mesa/pipe/softpipe/g_prim_unfilled.c b/src/mesa/pipe/softpipe/g_prim_unfilled.c new file mode 100644 index 0000000000..7c6ee79f92 --- /dev/null +++ b/src/mesa/pipe/softpipe/g_prim_unfilled.c @@ -0,0 +1,165 @@ +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/* Authors: Keith Whitwell <keith@tungstengraphics.com> + */ +#include "imports.h" + +#include "g_context.h" +#include "g_prim.h" + + + +struct unfilled_stage { + struct prim_stage stage; + + GLuint mode[2]; +}; + + +static INLINE struct unfilled_stage *unfilled_stage( struct prim_stage *stage ) +{ + return (struct unfilled_stage *)stage; +} + + +static void unfilled_begin( struct prim_stage *stage ) +{ + struct unfilled_stage *unfilled = unfilled_stage(stage); + + unfilled->mode[0] = stage->generic->setup.fill_ccw; + unfilled->mode[1] = stage->generic->setup.fill_cw; + + stage->next->begin( stage->next ); +} + +static void point( struct prim_stage *stage, + struct vertex_header *v0 ) +{ + struct prim_header tmp; + tmp.v[0] = v0; + stage->next->point( stage->next, &tmp ); +} + +static void line( struct prim_stage *stage, + struct vertex_header *v0, + struct vertex_header *v1 ) +{ + struct prim_header tmp; + tmp.v[0] = v0; + tmp.v[1] = v1; + stage->next->line( stage->next, &tmp ); +} + + +static void points( struct prim_stage *stage, + struct prim_header *header ) +{ + struct vertex_header *v0 = header->v[0]; + struct vertex_header *v1 = header->v[1]; + struct vertex_header *v2 = header->v[2]; + + if (v0->edgeflag) point( stage, v0 ); + if (v1->edgeflag) point( stage, v1 ); + if (v2->edgeflag) point( stage, v2 ); +} + +static void lines( struct prim_stage *stage, + struct prim_header *header ) +{ + struct vertex_header *v0 = header->v[0]; + struct vertex_header *v1 = header->v[1]; + struct vertex_header *v2 = header->v[2]; + + if (v0->edgeflag) line( stage, v0, v1 ); + if (v1->edgeflag) line( stage, v1, v2 ); + if (v2->edgeflag) line( stage, v2, v0 ); +} + + +/* Unfilled tri: + * + * Note edgeflags in the vertex struct is not sufficient as we will + * need to manipulate them when decomposing primitives??? + */ +static void unfilled_tri( struct prim_stage *stage, + struct prim_header *header ) +{ + struct unfilled_stage *unfilled = unfilled_stage(stage); + GLuint mode = unfilled->mode[header->det < 0]; + + switch (mode) { + case FILL_TRI: + stage->next->tri( stage->next, header ); + break; + + case FILL_LINE: + lines( stage, header ); + break; + + case GL_POINT: + points( stage, header ); + break; + } +} + +static void unfilled_line( struct prim_stage *stage, + struct prim_header *header ) +{ + stage->next->line( stage->next, header ); +} + + +static void unfilled_point( struct prim_stage *stage, + struct prim_header *header ) +{ + stage->next->point( stage->next, header ); +} + + +static void unfilled_end( struct prim_stage *stage ) +{ + stage->next->end( stage->next ); +} + +struct prim_stage *prim_unfilled( struct generic_context *generic ) +{ + struct unfilled_stage *unfilled = CALLOC_STRUCT(unfilled_stage); + + prim_alloc_tmps( &unfilled->stage, 0 ); + + unfilled->stage.generic = generic; + unfilled->stage.next = NULL; + unfilled->stage.tmp = NULL; + unfilled->stage.begin = unfilled_begin; + unfilled->stage.point = unfilled_point; + unfilled->stage.line = unfilled_line; + unfilled->stage.tri = unfilled_tri; + unfilled->stage.end = unfilled_end; + + return &unfilled->stage; +} diff --git a/src/mesa/pipe/softpipe/g_state.h b/src/mesa/pipe/softpipe/g_state.h new file mode 100644 index 0000000000..5077d37ab7 --- /dev/null +++ b/src/mesa/pipe/softpipe/g_state.h @@ -0,0 +1,61 @@ +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/* Authors: Keith Whitwell <keith@tungstengraphics.com> + */ + +#ifndef PRIM_H +#define PRIM_H + +#include "glheader.h" +#include "softpipe/sp_state.h" + + +void generic_set_clip_state( struct softpipe_context *, + const struct softpipe_clip_state * ); + +void generic_set_viewport( struct softpipe_context *, + const struct softpipe_viewport * ); + +void generic_set_setup_state( struct softpipe_context *, + const struct softpipe_setup_state * ); + +void generic_set_scissor_rect( struct softpipe_context *, + const struct softpipe_scissor_rect * ); + +void generic_set_fs_state( struct softpipe_context *, + const struct softpipe_fs_state * ); + +void generic_set_polygon_stipple( struct softpipe_context *, + const struct softpipe_poly_stipple * ); + +void generic_set_cbuf_state( struct softpipe_context *, + const struct softpipe_surface * ); + +void generic_update_derived( struct generic_context *generic ); + +#endif diff --git a/src/mesa/pipe/softpipe/g_state_clip.c b/src/mesa/pipe/softpipe/g_state_clip.c new file mode 100644 index 0000000000..b90034e11e --- /dev/null +++ b/src/mesa/pipe/softpipe/g_state_clip.c @@ -0,0 +1,69 @@ +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/* Authors: Keith Whitwell <keith@tungstengraphics.com> + */ +#include "imports.h" + +#include "g_context.h" +#include "g_state.h" +#include "g_draw.h" + + + +void generic_set_clip_state( struct softpipe_context *softpipe, + const struct softpipe_clip_state *clip ) +{ + struct generic_context *generic = generic_context(softpipe); + + memcpy(&generic->plane[6], clip->ucp, clip->nr * sizeof(clip->ucp[0])); + + generic->nr_planes = 6 + clip->nr; + generic->dirty |= G_NEW_CLIP; +} + + + +/* Called when driver state tracker notices changes to the viewport + * matrix: + */ +void generic_set_viewport( struct softpipe_context *softpipe, + const struct softpipe_viewport *viewport ) +{ + struct generic_context *generic = generic_context(softpipe); + + memcpy(&generic->viewport, viewport, sizeof(viewport)); + + /* Using tnl/ and vf/ modules is temporary while getting started. + * Full softpipe will have vertex shader, vertex fetch of its own. + */ + draw_set_viewport( generic->draw, viewport->scale, viewport->translate ); + generic->dirty |= G_NEW_VIEWPORT; +} + + + diff --git a/src/mesa/pipe/softpipe/g_state_derived.c b/src/mesa/pipe/softpipe/g_state_derived.c new file mode 100644 index 0000000000..678825afe1 --- /dev/null +++ b/src/mesa/pipe/softpipe/g_state_derived.c @@ -0,0 +1,136 @@ +/************************************************************************** + * + * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +#include "glheader.h" +#include "macros.h" +#include "enums.h" +#include "program.h" + +#include "g_context.h" +#include "g_draw.h" +#include "g_state.h" + +#define EMIT_ATTR( ATTR, FRAG_ATTR, INTERP ) \ +do { \ + slot_to_vf_attr[generic->nr_attrs] = ATTR; \ + generic->vf_attr_to_slot[ATTR] = generic->nr_attrs; \ + generic->fp_attr_to_slot[FRAG_ATTR] = generic->nr_attrs; \ + generic->interp[generic->nr_attrs] = INTERP; \ + generic->nr_attrs++; \ + attr_mask |= (1<<ATTR); \ +} while (0) + + +static GLuint frag_to_vf[FRAG_ATTRIB_MAX] = +{ + VF_ATTRIB_POS, + VF_ATTRIB_COLOR0, + VF_ATTRIB_COLOR1, + VF_ATTRIB_FOG, + VF_ATTRIB_TEX0, + VF_ATTRIB_TEX1, + VF_ATTRIB_TEX2, + VF_ATTRIB_TEX3, + VF_ATTRIB_TEX4, + VF_ATTRIB_TEX5, + VF_ATTRIB_TEX6, + VF_ATTRIB_TEX7, +}; + + +/* Derived from: fs, setup states. + */ +static void calculate_vertex_layout( struct generic_context *generic ) +{ + struct gl_fragment_program *fp = generic->fs.fp; + const GLuint inputsRead = fp->Base.InputsRead; + GLuint slot_to_vf_attr[VF_ATTRIB_MAX]; + GLuint attr_mask = 0; + GLuint i; + + generic->nr_attrs = 0; + memset(slot_to_vf_attr, 0, sizeof(slot_to_vf_attr)); + + memset(generic->fp_attr_to_slot, 0, sizeof(generic->vf_attr_to_slot)); + memset(generic->vf_attr_to_slot, 0, sizeof(generic->fp_attr_to_slot)); + + /* TODO - Figure out if we need to do perspective divide, etc. + */ + EMIT_ATTR(VF_ATTRIB_POS, FRAG_ATTRIB_WPOS, INTERP_LINEAR); + + /* Pull in the rest of the attributes. They are all in float4 + * format. Future optimizations could be to keep some attributes + * as fixed point or ubyte format. + */ + for (i = 1; i < FRAG_ATTRIB_TEX0; i++) { + if (inputsRead & (i << i)) { + EMIT_ATTR(frag_to_vf[i], i, INTERP_LINEAR); + } + } + + for (i = FRAG_ATTRIB_TEX0; i < FRAG_ATTRIB_MAX; i++) { + if (inputsRead & (i << i)) { + EMIT_ATTR(frag_to_vf[i], i, INTERP_PERSPECTIVE); + } + } + + generic->nr_frag_attrs = generic->nr_attrs; + + /* Additional attributes required for setup: Just twosided + * lighting. Edgeflag is dealt with specially by setting bits in + * the vertex header. + */ + if (generic->setup.light_twoside) { + if (inputsRead & FRAG_BIT_COL0) { + EMIT_ATTR(VF_ATTRIB_BFC0, FRAG_ATTRIB_MAX, 0); /* XXX: mark as discarded after setup */ + } + + if (inputsRead & FRAG_BIT_COL1) { + EMIT_ATTR(VF_ATTRIB_BFC1, FRAG_ATTRIB_MAX, 0); /* XXX: discard after setup */ + } + } + + if (attr_mask != generic->attr_mask) { + generic->attr_mask = attr_mask; + + draw_set_vertex_attributes( generic->draw, + slot_to_vf_attr, + generic->nr_attrs ); + } +} + + +/* Hopefully this will remain quite simple, otherwise need to pull in + * something like the state tracker mechanism. + */ +void generic_update_derived( struct generic_context *generic ) +{ + if (generic->dirty & (G_NEW_SETUP | G_NEW_FS)) + calculate_vertex_layout( generic ); + + generic->dirty = 0; +} diff --git a/src/mesa/pipe/softpipe/g_state_fs.c b/src/mesa/pipe/softpipe/g_state_fs.c new file mode 100644 index 0000000000..8a430c0c65 --- /dev/null +++ b/src/mesa/pipe/softpipe/g_state_fs.c @@ -0,0 +1,50 @@ +/************************************************************************** + * + * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +#include "g_context.h" +#include "g_state.h" + + + +void generic_set_fs_state( struct softpipe_context *softpipe, + const struct softpipe_fs_state *fs ) +{ + struct generic_context *generic = generic_context(softpipe); + + memcpy(&generic->fs, fs, sizeof(*fs)); + + generic->dirty |= G_NEW_FS; +} + + + + + + + + + diff --git a/src/mesa/pipe/softpipe/g_state_setup.c b/src/mesa/pipe/softpipe/g_state_setup.c new file mode 100644 index 0000000000..2a5176c5a1 --- /dev/null +++ b/src/mesa/pipe/softpipe/g_state_setup.c @@ -0,0 +1,122 @@ +/************************************************************************** + * + * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +#include "g_context.h" +#include "g_state.h" +#include "g_prim.h" + + + + +static void validate_prim_pipe( struct generic_context *generic ) +{ + struct prim_stage *next = generic->prim.setup; + + /* TODO: make the current primitive part of the state and build + * shorter pipelines for lines & points. + */ + if (generic->setup.fill_cw != FILL_TRI || + generic->setup.fill_ccw != FILL_TRI) { + + generic->prim.unfilled->next = next; + next = generic->prim.unfilled; + } + + if (generic->setup.offset_cw || + generic->setup.offset_ccw) { + generic->prim.offset->next = next; + next = generic->prim.offset; + } + + if (generic->setup.light_twoside) { + generic->prim.twoside->next = next; + next = generic->prim.twoside; + } + + /* Always run the cull stage as we calculate determinant there + * also. Fix this.. + */ + { + generic->prim.cull->next = next; + next = generic->prim.cull; + } + + + /* Clip stage + */ + { + generic->prim.clip->next = next; + next = generic->prim.clip; + } + + /* Do software flatshading prior to clipping. XXX: should only do + * this for clipped primitives, ie it is a part of the clip + * routine. + */ + if (generic->setup.flatshade) { + generic->prim.flatshade->next = next; + next = generic->prim.flatshade; + } + + + generic->prim.first = next; +} + + + + +void generic_set_setup_state( struct softpipe_context *softpipe, + const struct softpipe_setup_state *setup ) +{ + struct generic_context *generic = generic_context(softpipe); + + memcpy( &generic->setup, setup, sizeof(*setup) ); + + validate_prim_pipe( generic ); + generic->dirty |= G_NEW_SETUP; +} + + + +void generic_set_scissor_rect( struct softpipe_context *softpipe, + const struct softpipe_scissor_rect *scissor ) +{ + struct generic_context *generic = generic_context(softpipe); + + memcpy( &generic->scissor, scissor, sizeof(*scissor) ); + generic->dirty |= G_NEW_SCISSOR; +} + + +void generic_set_polygon_stipple( struct softpipe_context *softpipe, + const struct softpipe_poly_stipple *stipple ) +{ + struct generic_context *generic = generic_context(softpipe); + + memcpy( &generic->poly_stipple, stipple, sizeof(*stipple) ); + generic->dirty |= G_NEW_STIPPLE; +} diff --git a/src/mesa/pipe/softpipe/g_state_surface.c b/src/mesa/pipe/softpipe/g_state_surface.c new file mode 100644 index 0000000000..c791ce4640 --- /dev/null +++ b/src/mesa/pipe/softpipe/g_state_surface.c @@ -0,0 +1,53 @@ +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/* Authors: Keith Whitwell <keith@tungstengraphics.com> + */ +#include "imports.h" + +#include "g_context.h" +#include "g_state.h" +#include "g_surface.h" + + +/* This is all a total hack. + */ +void generic_set_cbuf_state( struct softpipe_context *softpipe, + const struct softpipe_surface *surface ) +{ + struct generic_context *generic = generic_context(softpipe); + + if (generic->cbuf_surface == NULL) { + generic->cbuf_surface = CALLOC_STRUCT(generic_surface); + generic->cbuf_surface->type = &gs_rgba8; + } + + generic->cbuf_surface->surface = *surface; + generic->dirty |= G_NEW_CBUF; +} + + diff --git a/src/mesa/pipe/softpipe/g_surface.c b/src/mesa/pipe/softpipe/g_surface.c new file mode 100644 index 0000000000..2df30cde70 --- /dev/null +++ b/src/mesa/pipe/softpipe/g_surface.c @@ -0,0 +1,153 @@ +/************************************************************************** + * + * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +#include "g_context.h" +#include "g_state.h" +#include "g_surface.h" +#include "g_headers.h" + +static void rgba8_read_quad_f( struct generic_surface *gs, + GLint x, GLint y, + GLfloat (*rgba)[NUM_CHANNELS] ) +{ + GLuint i, j, k = 0; + + for (i = 0; i < 2; i++) { + for (j = 0; j < 2; j++, k++) { + GLubyte *ptr = gs->surface.ptr + (y+i) * gs->surface.stride + (x+j) * 4; + rgba[k][0] = ptr[0] * (1.0 / 255.0); + rgba[k][1] = ptr[1] * (1.0 / 255.0); + rgba[k][2] = ptr[2] * (1.0 / 255.0); + rgba[k][3] = ptr[3] * (1.0 / 255.0); + } + } +} + +static void rgba8_read_quad_f_swz( struct generic_surface *gs, + GLint x, GLint y, + GLfloat (*rrrr)[QUAD_SIZE] ) +{ + GLuint i, j, k = 0; + + for (i = 0; i < 2; i++) { + for (j = 0; j < 2; j++, k++) { + GLubyte *ptr = gs->surface.ptr + (y+i) * gs->surface.stride + (x+j) * 4; + rrrr[0][k] = ptr[0] * (1.0 / 255.0); + rrrr[1][k] = ptr[1] * (1.0 / 255.0); + rrrr[2][k] = ptr[2] * (1.0 / 255.0); + rrrr[3][k] = ptr[3] * (1.0 / 255.0); + } + } +} + +static void rgba8_write_quad_f( struct generic_surface *gs, + GLint x, GLint y, + GLfloat (*rgba)[NUM_CHANNELS] ) +{ + GLuint i, j, k = 0; + + for (i = 0; i < 2; i++) { + for (j = 0; j < 2; j++, k++) { + GLubyte *ptr = gs->surface.ptr + (y+i) * gs->surface.stride + (x+j) * 4; + ptr[0] = rgba[k][0] * 255.0; + ptr[1] = rgba[k][1] * 255.0; + ptr[2] = rgba[k][2] * 255.0; + ptr[3] = rgba[k][3] * 255.0; + } + } +} + +static void rgba8_write_quad_f_swz( struct generic_surface *gs, + GLint x, GLint y, + GLfloat (*rrrr)[QUAD_SIZE] ) +{ + GLuint i, j, k = 0; + + for (i = 0; i < 2; i++) { + for (j = 0; j < 2; j++, k++) { + GLubyte *ptr = gs->surface.ptr + (y+i) * gs->surface.stride + (x+j) * 4; + ptr[0] = rrrr[0][k] * 255.0; + ptr[1] = rrrr[1][k] * 255.0; + ptr[2] = rrrr[2][k] * 255.0; + ptr[3] = rrrr[3][k] * 255.0; + } + } +} + + + + +static void rgba8_read_quad_ub( struct generic_surface *gs, + GLint x, GLint y, + GLubyte (*rgba)[NUM_CHANNELS] ) +{ + GLuint i, j, k = 0; + + for (i = 0; i < 2; i++) { + for (j = 0; j < 2; j++, k++) { + GLubyte *ptr = gs->surface.ptr + (y+i) * gs->surface.stride + (x+j) * 4; + rgba[k][0] = ptr[0]; + rgba[k][1] = ptr[1]; + rgba[k][2] = ptr[2]; + rgba[k][3] = ptr[3]; + } + } +} + + +static void rgba8_write_quad_ub( struct generic_surface *gs, + GLint x, GLint y, + GLubyte (*rgba)[NUM_CHANNELS] ) +{ + GLuint i, j, k = 0; + + for (i = 0; i < 2; i++) { + for (j = 0; j < 2; j++, k++) { + GLubyte *ptr = gs->surface.ptr + (y+i) * gs->surface.stride + (x+j) * 4; + ptr[0] = rgba[k][0]; + ptr[1] = rgba[k][1]; + ptr[2] = rgba[k][2]; + ptr[3] = rgba[k][3]; + } + } +} + + + + +struct generic_surface_type gs_rgba8 = { + G_SURFACE_RGBA_8888, + rgba8_read_quad_f, + rgba8_read_quad_f_swz, + rgba8_read_quad_ub, + rgba8_write_quad_f, + rgba8_write_quad_f_swz, + rgba8_write_quad_ub, +}; + + + diff --git a/src/mesa/pipe/softpipe/g_surface.h b/src/mesa/pipe/softpipe/g_surface.h new file mode 100644 index 0000000000..23c28f0bb4 --- /dev/null +++ b/src/mesa/pipe/softpipe/g_surface.h @@ -0,0 +1,115 @@ +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/* Authors: Keith Whitwell <keith@tungstengraphics.com> + */ + +#ifndef G_SURFACE_H +#define G_SURFACE_H + +#include "glheader.h" +#include "g_headers.h" + +struct generic_surface; + +#define G_SURFACE_RGBA_8888 0x1 + +/* Internal structs and helpers for the primitive clip/setup pipeline: + */ +struct generic_surface_type { + + GLuint format; + + void (*read_quad_f)( struct generic_surface *, + GLint x, GLint y, + GLfloat (*rgba)[NUM_CHANNELS] ); + + void (*read_quad_f_swz)( struct generic_surface *, + GLint x, GLint y, + GLfloat (*rrrr)[QUAD_SIZE] ); + + void (*read_quad_ub)( struct generic_surface *, + GLint x, GLint y, + GLubyte (*rgba)[NUM_CHANNELS] ); + + + void (*write_quad_f)( struct generic_surface *, + GLint x, GLint y, + GLfloat (*rgba)[NUM_CHANNELS] ); + + void (*write_quad_f_swz)( struct generic_surface *, + GLint x, GLint y, + GLfloat (*rrrr)[QUAD_SIZE] ); + + + void (*write_quad_ub)( struct generic_surface *, + GLint x, GLint y, + GLubyte (*rgba)[NUM_CHANNELS] ); + + +}; + + +struct generic_surface { + struct generic_surface_type *type; + struct softpipe_surface surface; +}; + + +static INLINE void gs_read_quad_f( struct generic_surface *gs, + GLint x, GLint y, + GLfloat (*rgba)[NUM_CHANNELS] ) +{ + gs->type->read_quad_f(gs, x, y, rgba); +} + +static INLINE void gs_read_quad_f_swz( struct generic_surface *gs, + GLint x, GLint y, + GLfloat (*rrrr)[QUAD_SIZE] ) +{ + gs->type->read_quad_f_swz(gs, x, y, rrrr); +} + +static INLINE void gs_write_quad_f( struct generic_surface *gs, + GLint x, GLint y, + GLfloat (*rgba)[NUM_CHANNELS] ) +{ + gs->type->write_quad_f(gs, x, y, rgba); +} + +static INLINE void gs_write_quad_f_swz( struct generic_surface *gs, + GLint x, GLint y, + GLfloat (*rrrr)[QUAD_SIZE] ) +{ + gs->type->write_quad_f_swz(gs, x, y, rrrr); +} + +/* Like this, or hidden? + */ +struct generic_surface_type gs_rgba8; + +#endif diff --git a/src/mesa/pipe/softpipe/g_tile.h b/src/mesa/pipe/softpipe/g_tile.h new file mode 100644 index 0000000000..6ae5212356 --- /dev/null +++ b/src/mesa/pipe/softpipe/g_tile.h @@ -0,0 +1,42 @@ +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/* Authors: Keith Whitwell <keith@tungstengraphics.com> + */ +#ifndef G_TILE_H +#define G_TILE_H + +struct generic_context; +struct quad_header; + +void quad_shade( struct generic_context *generic, + struct quad_header *quad ); + +void quad_output( struct generic_context *generic, + struct quad_header *quad ); + +#endif diff --git a/src/mesa/pipe/softpipe/g_tile_fs.c b/src/mesa/pipe/softpipe/g_tile_fs.c new file mode 100644 index 0000000000..4c5e6efaed --- /dev/null +++ b/src/mesa/pipe/softpipe/g_tile_fs.c @@ -0,0 +1,203 @@ +/* + * Mesa 3-D graphics library + * Version: 6.5 + * + * Copyright (C) 1999-2005 Brian Paul All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN + * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +/* Vertices are just an array of floats, with all the attributes + * packed. We currently assume a layout like: + * + * attr[0][0..3] - window position + * attr[1..n][0..3] - remaining attributes. + * + * Attributes are assumed to be 4 floats wide but are packed so that + * all the enabled attributes run contiguously. + */ + +#include "glheader.h" +#include "g_context.h" +#include "g_headers.h" +#include "g_tile.h" + +struct exec_machine { + const struct setup_coefficient *coef; + + GLfloat attr[FRAG_ATTRIB_MAX][4][QUAD_SIZE]; +}; + + +/** + * Compute quad's attributes values, as constants (GL_FLAT shading). + */ +static INLINE void cinterp( struct exec_machine *exec, + GLuint attrib, + GLuint i ) +{ + GLuint j; + + for (j = 0; j < QUAD_SIZE; j++) { + exec->attr[attrib][i][j] = exec->coef[attrib].a0[i]; + } +} + + +/** + * Compute quad's attribute values by linear interpolation. + * + * Push into the fp: + * + * INPUT[attr] = MAD COEF_A0[attr], COEF_DADX[attr], INPUT_WPOS.xxxx + * INPUT[attr] = MAD INPUT[attr], COEF_DADY[attr], INPUT_WPOS.yyyy + */ +static INLINE void linterp( struct exec_machine *exec, + GLuint attrib, + GLuint i ) +{ + GLuint j; + + for (j = 0; j < QUAD_SIZE; j++) { + const GLfloat x = exec->attr[FRAG_ATTRIB_WPOS][0][j]; + const GLfloat y = exec->attr[FRAG_ATTRIB_WPOS][1][j]; + exec->attr[attrib][i][j] = (exec->coef[attrib].a0[i] + + exec->coef[attrib].dadx[i] * x + + exec->coef[attrib].dady[i] * y); + } +} + + +/** + * Compute quad's attribute values by linear interpolation with + * perspective correction. + * + * Push into the fp: + * + * INPUT[attr] = MAD COEF_A0[attr], COEF_DADX[attr], INPUT_WPOS.xxxx + * INPUT[attr] = MAD INPUT[attr], COEF_DADY[attr], INPUT_WPOS.yyyy + * INPUT[attr] = MUL INPUT[attr], INPUT_WPOS.wwww + * + * (Or should that be 1/w ???) + */ +static INLINE void pinterp( struct exec_machine *exec, + GLuint attrib, + GLuint i ) +{ + GLuint j; + + for (j = 0; j < QUAD_SIZE; j++) { + const GLfloat x = exec->attr[FRAG_ATTRIB_WPOS][0][j]; + const GLfloat y = exec->attr[FRAG_ATTRIB_WPOS][1][j]; + const GLfloat invW = exec->attr[FRAG_ATTRIB_WPOS][3][j]; + exec->attr[attrib][i][j] = ((exec->coef[attrib].a0[i] + + exec->coef[attrib].dadx[i] * x + + exec->coef[attrib].dady[i] * y) * invW); + } +} + + + +/* This should be done by the fragment shader execution unit (code + * generated from the decl instructions). Do it here for now. + */ +void quad_shade( struct generic_context *generic, + struct quad_header *quad ) +{ + struct exec_machine exec; + GLfloat fx = quad->x0; + GLfloat fy = quad->y0; + GLuint i, j; + + exec.coef = quad->coef; + + /* Position: + */ + exec.attr[FRAG_ATTRIB_WPOS][0][0] = fx; + exec.attr[FRAG_ATTRIB_WPOS][0][1] = fx + 1.0; + exec.attr[FRAG_ATTRIB_WPOS][0][2] = fx; + exec.attr[FRAG_ATTRIB_WPOS][0][3] = fx + 1.0; + + exec.attr[FRAG_ATTRIB_WPOS][1][0] = fy; + exec.attr[FRAG_ATTRIB_WPOS][1][1] = fy; + exec.attr[FRAG_ATTRIB_WPOS][1][2] = fy + 1.0; + exec.attr[FRAG_ATTRIB_WPOS][1][3] = fy + 1.0; + + /* Z and W are done by linear interpolation: + * XXX we'll probably have to use integers for Z + */ + if (generic->need_z) { + linterp(&exec, 0, 2); + } + + if (generic->need_w) { + linterp(&exec, 0, 3); +// invert(&exec, 0, 3); + } + + /* Interpolate all the remaining attributes. This will get pushed + * into the fragment program's responsibilities at some point. + */ + for (i = 1; i < quad->nr_attrs; i++) { +#if 1 + for (j = 0; j < NUM_CHANNELS; j++) + linterp(&exec, i, j); +#else + switch (quad->interp[i]) { + case INTERP_CONSTANT: + for (j = 0; j < NUM_CHANNELS; j++) + cinterp(&exec, i, j); + break; + + case INTERP_LINEAR: + for (j = 0; j < NUM_CHANNELS; j++) + linterp(&exec, i, j); + break; + + case INTERP_PERSPECTIVE: + for (j = 0; j < NUM_CHANNELS; j++) + pinterp(&exec, i, j); + break; + } +#endif + } + +#if 0 + generic->run_fs( tri->fp, quad, &tri->outputs ); +#else + { + GLuint attr = generic->fp_attr_to_slot[FRAG_ATTRIB_COL0]; + assert(attr); + + memcpy(quad->outputs.color, + exec.attr[attr], + sizeof(quad->outputs.color)); + } +#endif + + + if (quad->mask) + quad_output( generic, quad ); +} + + + + + + + diff --git a/src/mesa/pipe/softpipe/g_tile_output.c b/src/mesa/pipe/softpipe/g_tile_output.c new file mode 100644 index 0000000000..058ca30193 --- /dev/null +++ b/src/mesa/pipe/softpipe/g_tile_output.c @@ -0,0 +1,92 @@ +/* + * Mesa 3-D graphics library + * Version: 6.5 + * + * Copyright (C) 1999-2005 Brian Paul All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN + * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +/* Vertices are just an array of floats, with all the attributes + * packed. We currently assume a layout like: + * + * attr[0][0..3] - window position + * attr[1..n][0..3] - remaining attributes. + * + * Attributes are assumed to be 4 floats wide but are packed so that + * all the enabled attributes run contiguously. + */ + +#include "glheader.h" +#include "g_context.h" +#include "g_headers.h" +#include "g_surface.h" +#include "g_tile.h" + + +static void mask_copy( GLfloat (*dest)[4], + GLfloat (*src)[4], + GLuint mask ) +{ + GLuint i, j; + + for (i = 0; i < 4; i++) { + if (mask & (1<<i)) { + for (j = 0; j < 4; j++) { + dest[j][i] = src[j][i]; + } + } + } +} + + +/* Write to the output, taking mask into account. + * + * Note that surfaces support only full quad reads and writes. + */ +void quad_output( struct generic_context *generic, + struct quad_header *quad ) +{ + + if (quad->mask != MASK_ALL) + { + GLfloat tmp[4][QUAD_SIZE]; + + /* Yes, we'll probably have a masked write as well, but this is + * how blend will be done at least. + */ + gs_read_quad_f_swz( generic->cbuf_surface, + quad->x0, + quad->y0, + tmp ); + + mask_copy( tmp, quad->outputs.color, quad->mask ); + + gs_write_quad_f_swz( generic->cbuf_surface, + quad->x0, + quad->y0, + tmp ); + } + else + { + gs_write_quad_f_swz( generic->cbuf_surface, + quad->x0, + quad->y0, + quad->outputs.color ); + } +} diff --git a/src/mesa/pipe/softpipe/sp_context.c b/src/mesa/pipe/softpipe/sp_context.c new file mode 100644 index 0000000000..8e547cbdc3 --- /dev/null +++ b/src/mesa/pipe/softpipe/sp_context.c @@ -0,0 +1,135 @@ +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/* Author: + * Keith Whitwell <keith@tungstengraphics.com> + */ + +#include "imports.h" +#include "macros.h" + +#include "tnl/t_context.h" +#include "vf/vf.h" + +#include "sp_context.h" +#include "sp_prim.h" +#include "sp_state.h" +#include "sp_draw.h" + +static void softpipe_destroy( struct pipe_context *pipe ) +{ + struct softpipe_context *softpipe = softpipe_context( pipe ); + + draw_destroy( softpipe->draw ); + + FREE( softpipe ); +} + + +static void softpipe_draw_vb( struct pipe_context *pipe, + struct vertex_buffer *VB ) +{ + struct softpipe_context *softpipe = softpipe_context( pipe ); + + if (softpipe->dirty) + softpipe_update_derived( softpipe ); + + draw_vb( softpipe->draw, VB ); +} + +struct pipe_context *softpipe_create( void ) +{ + struct softpipe_context *softpipe = CALLOC_STRUCT(softpipe_context); + + softpipe->pipe.destroy = softpipe_destroy; + softpipe->pipe.set_clip_state = softpipe_set_clip_state; + softpipe->pipe.set_viewport = softpipe_set_viewport; + softpipe->pipe.set_setup_state = softpipe_set_setup_state; + softpipe->pipe.set_scissor_rect = softpipe_set_scissor_rect; + softpipe->pipe.set_fs_state = softpipe_set_fs_state; + softpipe->pipe.set_polygon_stipple = softpipe_set_polygon_stipple; + softpipe->pipe.set_cbuf_state = softpipe_set_cbuf_state; + softpipe->pipe.draw_vb = softpipe_draw_vb; + + + + softpipe->prim.setup = prim_setup( softpipe ); + softpipe->prim.unfilled = prim_unfilled( softpipe ); + softpipe->prim.twoside = prim_twoside( softpipe ); + softpipe->prim.offset = prim_offset( softpipe ); + softpipe->prim.clip = prim_clip( softpipe ); + softpipe->prim.flatshade = prim_flatshade( softpipe ); + softpipe->prim.cull = prim_cull( softpipe ); + + + softpipe->draw = draw_create( softpipe ); + + ASSIGN_4V( softpipe->plane[0], -1, 0, 0, 1 ); + ASSIGN_4V( softpipe->plane[1], 1, 0, 0, 1 ); + ASSIGN_4V( softpipe->plane[2], 0, -1, 0, 1 ); + ASSIGN_4V( softpipe->plane[3], 0, 1, 0, 1 ); + ASSIGN_4V( softpipe->plane[4], 0, 0, 1, 1 ); /* yes these are correct */ + ASSIGN_4V( softpipe->plane[5], 0, 0, -1, 1 ); /* mesa's a bit wonky */ + softpipe->nr_planes = 6; + + return &softpipe->pipe; +} + + + + + + +#define MAX_VERTEX_SIZE ((2 + FRAG_ATTRIB_MAX) * 4 * sizeof(GLfloat)) + +void prim_alloc_tmps( struct prim_stage *stage, GLuint nr ) +{ + stage->nr_tmps = nr; + + if (nr) { + GLubyte *store = MALLOC(MAX_VERTEX_SIZE * nr); + GLuint i; + + stage->tmp = MALLOC(sizeof(struct vertex_header *) * nr); + + for (i = 0; i < nr; i++) + stage->tmp[i] = (struct vertex_header *)(store + i * MAX_VERTEX_SIZE); + } +} + +void prim_free_tmps( struct prim_stage *stage ) +{ + if (stage->tmp) { + FREE(stage->tmp[0]); + FREE(stage->tmp); + } +} + + + + + diff --git a/src/mesa/pipe/softpipe/sp_context.h b/src/mesa/pipe/softpipe/sp_context.h new file mode 100644 index 0000000000..da6c17aaf6 --- /dev/null +++ b/src/mesa/pipe/softpipe/sp_context.h @@ -0,0 +1,149 @@ +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/* Authors: Keith Whitwell <keith@tungstengraphics.com> + */ + +#ifndef G_CONTEXT_H +#define G_CONTEXT_H + +#include "glheader.h" + +#include "pipe/p_state.h" +#include "pipe/p_context.h" + + + +struct softpipe_surface; +struct draw_context; +struct prim_stage; + + +enum interp_mode { + INTERP_CONSTANT, + INTERP_LINEAR, + INTERP_PERSPECTIVE +}; + + +#define G_NEW_VIEWPORT 0x1 +#define G_NEW_SETUP 0x2 +#define G_NEW_FS 0x4 +#define G_NEW_BLEND 0x8 +#define G_NEW_CBUF 0x10 +#define G_NEW_CLIP 0x20 +#define G_NEW_SCISSOR 0x40 +#define G_NEW_STIPPLE 0x80 + + + +struct softpipe_context { + struct pipe_context pipe; + + + /* The most recent drawing state as set by the driver: + */ + struct pipe_viewport viewport; + struct pipe_setup_state setup; + struct pipe_fs_state fs; + struct pipe_blend_state blend; + struct pipe_surface cbuf; + struct pipe_clip_state clip; + struct pipe_scissor_rect scissor; + struct pipe_poly_stipple poly_stipple; + GLuint dirty; + + + /* Cbuf derived state??? + */ + struct softpipe_surface *cbuf_surface; + + /* Clip derived state: + */ + GLfloat plane[12][4]; + GLuint nr_planes; + + /* Setup derived state. TODO: this should be passed in the program + * tokens as parameters to DECL instructions. + * + * For now we just set colors to CONST on flatshade, textures to + * perspective always and everything else to linear. + */ + enum interp_mode interp[VF_ATTRIB_MAX]; + + + /* FS + setup derived state: + */ + GLuint fp_attr_to_slot[VF_ATTRIB_MAX]; + GLuint vf_attr_to_slot[VF_ATTRIB_MAX]; + GLuint nr_attrs; + GLuint nr_frag_attrs; + GLuint attr_mask; + + GLboolean need_z; + GLboolean need_w; + + /* Stipple derived state: + */ + GLubyte stipple_masks[16][16]; + + + /* The software clipper/setup engine. + */ + struct { + struct prim_stage *setup; + struct prim_stage *unfilled; + struct prim_stage *twoside; + struct prim_stage *clip; + struct prim_stage *flatshade; + struct prim_stage *offset; + struct prim_stage *cull; + + struct prim_stage *first; + + GLenum prim; + GLuint vertex_size; + } prim; + + /* Temp kludge: + */ + struct draw_context *draw; +}; + + + + +static INLINE struct softpipe_context * +softpipe_context( struct pipe_context *pipe ) +{ + return (struct softpipe_context *)pipe; +} + + + + +#endif diff --git a/src/mesa/pipe/softpipe/sp_draw.c b/src/mesa/pipe/softpipe/sp_draw.c new file mode 100644 index 0000000000..5813e37776 --- /dev/null +++ b/src/mesa/pipe/softpipe/sp_draw.c @@ -0,0 +1,696 @@ +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + + /* + * Authors: + * Keith Whitwell <keith@tungstengraphics.com> + */ + +#include "imports.h" + +#include "tnl/t_context.h" + +#include "sp_context.h" +#include "sp_prim.h" +#include "sp_headers.h" +#include "sp_draw.h" + +/* This file is a temporary set of hooks to allow us to use the tnl/ + * and vf/ modules until we have replacements in pipe. + */ + + +struct draw_context +{ + struct softpipe_context *softpipe; + + struct vf_attr_map attrs[VF_ATTRIB_MAX]; + GLuint nr_attrs; + GLuint vertex_size; + struct vertex_fetch *vf; + + GLubyte *verts; + GLuint nr_vertices; + GLboolean in_vb; + + GLenum prim; + + /* Helper for tnl: + */ + GLvector4f header; +}; + + +static struct vertex_header *get_vertex( struct draw_context *pipe, + GLuint i ) +{ + return (struct vertex_header *)(pipe->verts + i * pipe->vertex_size); +} + + + +static void draw_allocate_vertices( struct draw_context *draw, + GLuint nr_vertices ) +{ + draw->nr_vertices = nr_vertices; + draw->verts = MALLOC( nr_vertices * draw->vertex_size ); + + draw->softpipe->prim.first->begin( draw->softpipe->prim.first ); +} + +static void draw_set_prim( struct draw_context *draw, + GLenum prim ) +{ + draw->prim = prim; + + /* Not done yet - need to force edgeflags to 1 in strip/fan + * primitives. + */ +#if 0 + switch (prim) { + case GL_TRIANGLES: + case GL_POLYGON: + case GL_QUADS: + case GL_QUAD_STRIP: /* yes, we need this */ + respect_edgeflags( pipe, GL_TRUE ); + break; + + default: + respect_edgeflags( pipe, GL_FALSE ); + break; + } +#endif +} + + + +static void do_quad( struct prim_stage *first, + struct vertex_header *v0, + struct vertex_header *v1, + struct vertex_header *v2, + struct vertex_header *v3 ) +{ + struct prim_header prim; + + { + GLuint tmp = v1->edgeflag; + v1->edgeflag = 0; + + prim.v[0] = v0; + prim.v[1] = v1; + prim.v[2] = v3; + first->tri( first, &prim ); + + v1->edgeflag = tmp; + } + + { + GLuint tmp = v3->edgeflag; + v3->edgeflag = 0; + + prim.v[0] = v1; + prim.v[1] = v2; + prim.v[2] = v3; + first->tri( first, &prim ); + + v3->edgeflag = tmp; + } +} + + + + +static void draw_indexed_prim( struct draw_context *draw, + const GLuint *elts, + GLuint count ) +{ + struct prim_stage * const first = draw->softpipe->prim.first; + struct prim_header prim; + GLuint i; + + prim.det = 0; /* valid from cull stage onwards */ + prim.v[0] = 0; + prim.v[1] = 0; + prim.v[2] = 0; + + switch (draw->prim) { + case GL_POINTS: + for (i = 0; i < count; i ++) { + prim.v[0] = get_vertex( draw, elts[i] ); + + first->point( first, &prim ); + } + break; + + case GL_LINES: + for (i = 0; i+1 < count; i += 2) { + prim.v[0] = get_vertex( draw, elts[i + 0] ); + prim.v[1] = get_vertex( draw, elts[i + 1] ); + + first->line( first, &prim ); + } + break; + + case GL_LINE_LOOP: + if (count >= 2) { + for (i = 1; i < count; i++) { + prim.v[0] = get_vertex( draw, elts[i-1] ); + prim.v[1] = get_vertex( draw, elts[i] ); + first->line( first, &prim ); + } + + prim.v[0] = get_vertex( draw, elts[count-1] ); + prim.v[1] = get_vertex( draw, elts[0] ); + first->line( first, &prim ); + } + break; + + case GL_LINE_STRIP: + /* I'm guessing it will be necessary to have something like a + * render->reset_line_stipple() method to properly support + * splitting strips into primitives like this. Alternately we + * could just scan ahead to find individual clipped lines and + * otherwise leave the strip intact - that might be better, but + * require more complex code here. + */ + if (count >= 2) { + prim.v[0] = 0; + prim.v[1] = get_vertex( draw, elts[0] ); + + for (i = 1; i < count; i++) { + prim.v[0] = prim.v[1]; + prim.v[1] = get_vertex( draw, elts[i] ); + + first->line( first, &prim ); + } + } + break; + + case GL_TRIANGLES: + for (i = 0; i+2 < count; i += 3) { + prim.v[0] = get_vertex( draw, elts[i + 0] ); + prim.v[1] = get_vertex( draw, elts[i + 1] ); + prim.v[2] = get_vertex( draw, elts[i + 2] ); + + first->tri( first, &prim ); + } + break; + + case GL_TRIANGLE_STRIP: + for (i = 0; i+2 < count; i++) { + if (i & 1) { + prim.v[0] = get_vertex( draw, elts[i + 1] ); + prim.v[1] = get_vertex( draw, elts[i + 0] ); + prim.v[2] = get_vertex( draw, elts[i + 2] ); + } + else { + prim.v[0] = get_vertex( draw, elts[i + 0] ); + prim.v[1] = get_vertex( draw, elts[i + 1] ); + prim.v[2] = get_vertex( draw, elts[i + 2] ); + } + + first->tri( first, &prim ); + } + break; + + case GL_TRIANGLE_FAN: + if (count >= 3) { + prim.v[0] = get_vertex( draw, elts[0] ); + prim.v[1] = 0; + prim.v[2] = get_vertex( draw, elts[1] ); + + for (i = 0; i+2 < count; i++) { + prim.v[1] = prim.v[2]; + prim.v[2] = get_vertex( draw, elts[i+2] ); + + first->tri( first, &prim ); + } + } + break; + + case GL_QUADS: + for (i = 0; i+3 < count; i += 4) { + do_quad( first, + get_vertex( draw, elts[i + 0] ), + get_vertex( draw, elts[i + 1] ), + get_vertex( draw, elts[i + 2] ), + get_vertex( draw, elts[i + 3] )); + } + break; + + case GL_QUAD_STRIP: + for (i = 0; i+3 < count; i += 2) { + do_quad( first, + get_vertex( draw, elts[i + 2] ), + get_vertex( draw, elts[i + 0] ), + get_vertex( draw, elts[i + 1] ), + get_vertex( draw, elts[i + 3] )); + } + break; + + + case GL_POLYGON: + if (count >= 3) { + prim.v[0] = 0; + prim.v[1] = get_vertex( draw, elts[1] ); + prim.v[2] = get_vertex( draw, elts[0] ); + + for (i = 0; i+2 < count; i++) { + prim.v[0] = prim.v[1]; + prim.v[1] = get_vertex( draw, elts[i+2] ); + + first->tri( first, &prim ); + } + } + break; + + default: + assert(0); + break; + } +} + +static void draw_prim( struct draw_context *draw, + GLuint start, + GLuint count ) +{ + struct prim_stage * const first = draw->softpipe->prim.first; + struct prim_header prim; + GLuint i; + +// _mesa_printf("%s (%d) %d/%d\n", __FUNCTION__, draw->prim, start, count ); + + prim.det = 0; /* valid from cull stage onwards */ + prim.v[0] = 0; + prim.v[1] = 0; + prim.v[2] = 0; + + switch (draw->prim) { + case GL_POINTS: + for (i = 0; i < count; i ++) { + prim.v[0] = get_vertex( draw, start + i ); + first->point( first, &prim ); + } + break; + + case GL_LINES: + for (i = 0; i+1 < count; i += 2) { + prim.v[0] = get_vertex( draw, start + i + 0 ); + prim.v[1] = get_vertex( draw, start + i + 1 ); + + first->line( first, &prim ); + } + break; + + case GL_LINE_LOOP: + if (count >= 2) { + for (i = 1; i < count; i++) { + prim.v[0] = get_vertex( draw, start + i - 1 ); + prim.v[1] = get_vertex( draw, start + i ); + first->line( first, &prim ); + } + + prim.v[0] = get_vertex( draw, start + count - 1 ); + prim.v[1] = get_vertex( draw, start + 0 ); + first->line( first, &prim ); + } + break; + + case GL_LINE_STRIP: + if (count >= 2) { + prim.v[0] = 0; + prim.v[1] = get_vertex( draw, start + 0 ); + + for (i = 1; i < count; i++) { + prim.v[0] = prim.v[1]; + prim.v[1] = get_vertex( draw, start + i ); + + first->line( first, &prim ); + } + } + break; + + case GL_TRIANGLES: + for (i = 0; i+2 < count; i += 3) { + prim.v[0] = get_vertex( draw, start + i + 0 ); + prim.v[1] = get_vertex( draw, start + i + 1 ); + prim.v[2] = get_vertex( draw, start + i + 2 ); + + first->tri( first, &prim ); + } + break; + + case GL_TRIANGLE_STRIP: + for (i = 0; i+2 < count; i++) { + if (i & 1) { + prim.v[0] = get_vertex( draw, start + i + 1 ); + prim.v[1] = get_vertex( draw, start + i + 0 ); + prim.v[2] = get_vertex( draw, start + i + 2 ); + } + else { + prim.v[0] = get_vertex( draw, start + i + 0 ); + prim.v[1] = get_vertex( draw, start + i + 1 ); + prim.v[2] = get_vertex( draw, start + i + 2 ); + } + + first->tri( first, &prim ); + } + break; + + case GL_TRIANGLE_FAN: + if (count >= 3) { + prim.v[0] = get_vertex( draw, start + 0 ); + prim.v[1] = 0; + prim.v[2] = get_vertex( draw, start + 1 ); + + for (i = 0; i+2 < count; i++) { + prim.v[1] = prim.v[2]; + prim.v[2] = get_vertex( draw, start + i + 2 ); + + first->tri( first, &prim ); + } + } + break; + + + case GL_QUADS: + for (i = 0; i+3 < count; i += 4) { + do_quad( first, + get_vertex( draw, start + i + 0 ), + get_vertex( draw, start + i + 1 ), + get_vertex( draw, start + i + 2 ), + get_vertex( draw, start + i + 3 )); + } + break; + + case GL_QUAD_STRIP: + for (i = 0; i+3 < count; i += 2) { + do_quad( first, + get_vertex( draw, start + i + 2 ), + get_vertex( draw, start + i + 0 ), + get_vertex( draw, start + i + 1 ), + get_vertex( draw, start + i + 3 )); + } + break; + + case GL_POLYGON: + if (count >= 3) { + prim.v[0] = 0; + prim.v[1] = get_vertex( draw, start + 1 ); + prim.v[2] = get_vertex( draw, start + 0 ); + + for (i = 0; i+2 < count; i++) { + prim.v[0] = prim.v[1]; + prim.v[1] = get_vertex( draw, start + i + 2 ); + + first->tri( first, &prim ); + } + } + break; + + default: + assert(0); + break; + } +} + + +static void draw_release_vertices( struct draw_context *draw ) +{ + draw->softpipe->prim.first->end( draw->softpipe->prim.first ); + + FREE(draw->verts); + draw->verts = NULL; +} + + +struct header_dword { + GLuint clipmask:12; + GLuint edgeflag:1; + GLuint pad:19; +}; + + +static void +build_vertex_headers( struct draw_context *draw, + struct vertex_buffer *VB ) +{ + if (draw->header.storage == NULL) { + draw->header.stride = sizeof(GLfloat); + draw->header.size = 1; + draw->header.storage = ALIGN_MALLOC( VB->Size * sizeof(GLfloat), 32 ); + draw->header.data = draw->header.storage; + draw->header.count = 0; + draw->header.flags = VEC_SIZE_1 | VEC_MALLOC; + } + + /* Build vertex header attribute. + * + */ + + { + GLuint i; + struct header_dword *header = (struct header_dword *)draw->header.storage; + + /* yes its a hack + */ + assert(sizeof(*header) == sizeof(GLfloat)); + + draw->header.count = VB->Count; + + if (VB->EdgeFlag) { + for (i = 0; i < VB->Count; i++) { + header[i].clipmask = VB->ClipMask[i]; + header[i].edgeflag = VB->EdgeFlag[i]; + header[i].pad = 0; + } + } + else if (VB->ClipOrMask) { + for (i = 0; i < VB->Count; i++) { + header[i].clipmask = VB->ClipMask[i]; + header[i].edgeflag = 0; + header[i].pad = 0; + } + } + else { + for (i = 0; i < VB->Count; i++) { + header[i].clipmask = 0; + header[i].edgeflag = 0; + header[i].pad = 0; + } + } + } + + VB->AttribPtr[VF_ATTRIB_VERTEX_HEADER] = &draw->header; +} + + + + + +static GLuint draw_prim_info(GLenum mode, GLuint *first, GLuint *incr) +{ + switch (mode) { + case GL_POINTS: + *first = 1; + *incr = 1; + return 0; + case GL_LINES: + *first = 2; + *incr = 2; + return 0; + case GL_LINE_STRIP: + *first = 2; + *incr = 1; + return 0; + case GL_LINE_LOOP: + *first = 2; + *incr = 1; + return 1; + case GL_TRIANGLES: + *first = 3; + *incr = 3; + return 0; + case GL_TRIANGLE_STRIP: + *first = 3; + *incr = 1; + return 0; + case GL_TRIANGLE_FAN: + case GL_POLYGON: + *first = 3; + *incr = 1; + return 1; + case GL_QUADS: + *first = 4; + *incr = 4; + return 0; + case GL_QUAD_STRIP: + *first = 4; + *incr = 2; + return 0; + default: + assert(0); + *first = 1; + *incr = 1; + return 0; + } +} + + +static GLuint trim( GLuint count, GLuint first, GLuint incr ) +{ + if (count < first) + return 0; + else + return count - (count - first) % incr; +} + + +/* This is a hack & will all go away. + */ +void draw_vb(struct draw_context *draw, + struct vertex_buffer *VB ) +{ + GLuint i; + + VB->AttribPtr[VF_ATTRIB_POS] = VB->NdcPtr; + VB->AttribPtr[VF_ATTRIB_BFC0] = VB->ColorPtr[1]; + VB->AttribPtr[VF_ATTRIB_BFC1] = VB->SecondaryColorPtr[1]; + VB->AttribPtr[VF_ATTRIB_CLIP_POS] = VB->ClipPtr; + + /* Build vertex headers: + */ + build_vertex_headers( draw, VB ); + + draw->in_vb = 1; + + /* Allocate the vertices: + */ + draw_allocate_vertices( draw, VB->Count ); + + /* Bind the vb outputs: + */ + vf_set_sources( draw->vf, VB->AttribPtr, 0 ); + + /* Build the hardware or prim-pipe vertices: + */ + vf_emit_vertices( draw->vf, VB->Count, draw->verts ); + + + for (i = 0; i < VB->PrimitiveCount; i++) { + + GLenum mode = VB->Primitive[i].mode; + GLuint start = VB->Primitive[i].start; + GLuint length, first, incr; + + /* Trim the primitive down to a legal size. + */ + draw_prim_info( mode, &first, &incr ); + length = trim( VB->Primitive[i].count, first, incr ); + + if (!length) + continue; + + if (draw->prim != mode) + draw_set_prim( draw, mode ); + + if (VB->Elts) { + draw_indexed_prim( draw, + VB->Elts + start, + length ); + } + else { + draw_prim( draw, + start, + length ); + } + } + + draw_release_vertices( draw ); + draw->verts = NULL; + draw->in_vb = 0; +} + +void draw_set_viewport( struct draw_context *draw, + const GLfloat *scale, + const GLfloat *translate ) +{ + assert(!draw->in_vb); + vf_set_vp_scale_translate( draw->vf, scale, translate ); +} + + + +struct draw_context *draw_create( struct softpipe_context *softpipe ) +{ + struct draw_context *draw = CALLOC_STRUCT( draw_context ); + draw->softpipe = softpipe; + draw->vf = vf_create( GL_TRUE ); + + return draw; +} + + +void draw_destroy( struct draw_context *draw ) +{ + if (draw->header.storage) + ALIGN_FREE( draw->header.storage ); + + vf_destroy( draw->vf ); + + FREE( draw ); +} + +#define EMIT_ATTR( ATTR, STYLE ) \ +do { \ + draw->attrs[draw->nr_attrs].attrib = ATTR; \ + draw->attrs[draw->nr_attrs].format = STYLE; \ + draw->nr_attrs++; \ +} while (0) + + +void draw_set_vertex_attributes( struct draw_context *draw, + const GLuint *attrs, + GLuint nr_attrs ) +{ + GLuint i; + + draw->nr_attrs = 0; + + EMIT_ATTR(VF_ATTRIB_VERTEX_HEADER, EMIT_1F); + EMIT_ATTR(VF_ATTRIB_CLIP_POS, EMIT_4F); + + assert(attrs[0] == VF_ATTRIB_POS); + EMIT_ATTR(attrs[0], EMIT_4F_VIEWPORT); + + for (i = 1; i < nr_attrs; i++) + EMIT_ATTR(attrs[i], EMIT_4F); + + draw->vertex_size = vf_set_vertex_attributes( draw->vf, draw->attrs, draw->nr_attrs, 0 ); +} + + diff --git a/src/mesa/pipe/softpipe/sp_draw.h b/src/mesa/pipe/softpipe/sp_draw.h new file mode 100644 index 0000000000..a138f812fa --- /dev/null +++ b/src/mesa/pipe/softpipe/sp_draw.h @@ -0,0 +1,56 @@ + +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/* Authors: Keith Whitwell <keith@tungstengraphics.com> + */ + +#ifndef G_DRAW_H +#define G_DRAW_H + +#include "glheader.h" +#include "pipe/p_state.h" + + +struct draw_context; + +struct draw_context *draw_create( struct softpipe_context *softpipe ); + +void draw_destroy( struct draw_context *draw ); + +void draw_set_viewport( struct draw_context *draw, + const GLfloat *scale, + const GLfloat *translate ); + +void draw_set_vertex_attributes( struct draw_context *draw, + const GLuint *attrs, + GLuint nr_attrs ); + +void draw_vb(struct draw_context *draw, + struct vertex_buffer *VB ); + +#endif diff --git a/src/mesa/pipe/softpipe/sp_headers.h b/src/mesa/pipe/softpipe/sp_headers.h new file mode 100644 index 0000000000..96ff52a453 --- /dev/null +++ b/src/mesa/pipe/softpipe/sp_headers.h @@ -0,0 +1,116 @@ +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/* Authors: Keith Whitwell <keith@tungstengraphics.com> + */ +#ifndef G_HEADERS_H +#define G_HEADERS_H + +#define PRIM_POINT 1 +#define PRIM_LINE 2 +#define PRIM_TRI 3 + +struct prim_header { + GLfloat det; + struct vertex_header *v[3]; +}; + +/* Carry some useful information around with the vertices in the prim + * pipe. + */ +struct vertex_header { + GLuint clipmask:12; + GLuint edgeflag:1; + GLuint pad:19; + + GLfloat clip[4]; + + GLfloat data[][4]; /* Note variable size */ +}; + + + + + +/* The rasterizer generates 2x2 quads of fragment and feeds them to + * the current fp_machine (see below). + */ +#define QUAD_BOTTOM_LEFT 0 +#define QUAD_BOTTOM_RIGHT 1 +#define QUAD_TOP_LEFT 2 +#define QUAD_TOP_RIGHT 3 +#define QUAD_SIZE (2*2) + +#define MASK_BOTTOM_LEFT 0x1 +#define MASK_BOTTOM_RIGHT 0x2 +#define MASK_TOP_LEFT 0x4 +#define MASK_TOP_RIGHT 0x8 +#define MASK_ALL 0xf + + +#define NUM_CHANNELS 4 /* avoid confusion between 4 pixels and 4 channels */ + + +struct setup_coefficient { + GLfloat a0[NUM_CHANNELS]; /* in an xyzw layout */ + GLfloat dadx[NUM_CHANNELS]; + GLfloat dady[NUM_CHANNELS]; +}; + + + +/* Encodes everything we need to know about a 2x2 pixel block. Uses + * "Channel-Serial" or "SoA" layout. + * + * Will expand to include non-attribute things like AA coverage and + * maybe prefetched depth from the depth buffer. + */ +struct quad_header { + GLint x0; + GLint y0; + GLuint mask; + GLuint facing; /**< Front or back facing? */ + + struct { + GLfloat color[4][QUAD_SIZE]; /* rrrr, gggg, bbbb, aaaa */ + GLfloat depth[QUAD_SIZE]; + } outputs; + + const struct setup_coefficient *coef; + + const enum interp_mode *interp; /* XXX: this information should be + * encoded in fragment program DECL + * statements. */ + + GLuint nr_attrs; +}; + + + + + +#endif diff --git a/src/mesa/pipe/softpipe/sp_prim.h b/src/mesa/pipe/softpipe/sp_prim.h new file mode 100644 index 0000000000..b6cbaae085 --- /dev/null +++ b/src/mesa/pipe/softpipe/sp_prim.h @@ -0,0 +1,90 @@ +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/* Authors: Keith Whitwell <keith@tungstengraphics.com> + */ + +#ifndef G_PRIM_H +#define G_PRIM_H + +#include "glheader.h" +#include "sp_headers.h" + +struct softpipe_context; + +struct prim_stage *prim_setup( struct softpipe_context *context ); +struct prim_stage *prim_unfilled( struct softpipe_context *context ); +struct prim_stage *prim_twoside( struct softpipe_context *context ); +struct prim_stage *prim_offset( struct softpipe_context *context ); +struct prim_stage *prim_clip( struct softpipe_context *context ); +struct prim_stage *prim_flatshade( struct softpipe_context *context ); +struct prim_stage *prim_cull( struct softpipe_context *context ); + + +/* Internal structs and helpers for the primitive clip/setup pipeline: + */ +struct prim_stage { + struct softpipe_context *softpipe; + + struct prim_stage *next; + + struct vertex_header **tmp; + GLuint nr_tmps; + + void (*begin)( struct prim_stage * ); + + void (*point)( struct prim_stage *, + struct prim_header * ); + + void (*line)( struct prim_stage *, + struct prim_header * ); + + void (*tri)( struct prim_stage *, + struct prim_header * ); + + void (*end)( struct prim_stage * ); +}; + + + +/* Get a writeable copy of a vertex: + */ +static INLINE struct vertex_header * +dup_vert( struct prim_stage *stage, + const struct vertex_header *vert, + GLuint idx ) +{ + struct vertex_header *tmp = stage->tmp[idx]; + memcpy(tmp, vert, stage->softpipe->prim.vertex_size ); + return tmp; +} + +void prim_free_tmps( struct prim_stage *stage ); +void prim_alloc_tmps( struct prim_stage *stage, GLuint nr ); + + +#endif diff --git a/src/mesa/pipe/softpipe/sp_prim_clip.c b/src/mesa/pipe/softpipe/sp_prim_clip.c new file mode 100644 index 0000000000..304c43c3f4 --- /dev/null +++ b/src/mesa/pipe/softpipe/sp_prim_clip.c @@ -0,0 +1,429 @@ +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/* Authors: Keith Whitwell <keith@tungstengraphics.com> + */ + +#include "imports.h" +#include "macros.h" + +#include "sp_context.h" +#include "sp_prim.h" + +struct clipper { + struct prim_stage stage; + + GLuint active_user_planes; +}; + +/* This is a bit confusing: + */ +static INLINE struct clipper *clipper_stage( struct prim_stage *stage ) +{ + return (struct clipper *)stage; +} + + +#define LINTERP(T, OUT, IN) ((OUT) + (T) * ((IN) - (OUT))) + + +/* All attributes are float[4], so this is easy: + */ +static void interp_attr( GLfloat *fdst, + GLfloat t, + const GLfloat *fin, + const GLfloat *fout ) +{ + fdst[0] = LINTERP( t, fout[0], fin[0] ); + fdst[1] = LINTERP( t, fout[1], fin[1] ); + fdst[2] = LINTERP( t, fout[2], fin[2] ); + fdst[3] = LINTERP( t, fout[3], fin[3] ); +} + + + + +/* Interpolate between two vertices to produce a third. + */ +static void interp( struct clipper *clip, + struct vertex_header *dst, + GLfloat t, + const struct vertex_header *out, + const struct vertex_header *in ) +{ + const GLuint nr_attrs = clip->stage.softpipe->nr_attrs; + GLuint j; + + /* Vertex header. + */ + { + dst->clipmask = 0; + dst->edgeflag = 0; + dst->pad = 0; + } + + /* Clip coordinates: interpolate normally + */ + { + interp_attr(dst->clip, t, in->clip, out->clip); + } + + /* Do the projective divide and insert window coordinates: + */ + { + const GLfloat *pos = dst->clip; + const GLfloat *scale = clip->stage.softpipe->viewport.scale; + const GLfloat *trans = clip->stage.softpipe->viewport.translate; + GLfloat oow; + + oow = 1.0 / pos[3]; + + dst->data[0][0] = pos[0] * oow * scale[0] + trans[0]; + dst->data[0][1] = pos[1] * oow * scale[1] + trans[1]; + dst->data[0][2] = pos[2] * oow * scale[2] + trans[2]; + dst->data[0][3] = oow; + } + + + /* Other attributes + */ + for (j = 1; j < nr_attrs-1; j++) { + interp_attr(dst->data[j], t, in->data[j], out->data[j]); + } +} + + +#define CLIP_USER_BIT 0x40 +#define CLIP_CULL_BIT 0x80 + + +static INLINE GLfloat dot4( const GLfloat *a, + const GLfloat *b ) +{ + GLfloat result = (a[0]*b[0] + + a[1]*b[1] + + a[2]*b[2] + + a[3]*b[3]); + + return result; +} + + +#if 0 +static INLINE void do_tri( struct prim_stage *next, + struct prim_header *header ) +{ + GLuint i; + for (i = 0; i < 3; i++) { + GLfloat *ndc = header->v[i]->data[0]; + _mesa_printf("ndc %f %f %f\n", ndc[0], ndc[1], ndc[2]); + assert(ndc[0] >= -1 && ndc[0] <= 641); + assert(ndc[1] >= 30 && ndc[1] <= 481); + } + _mesa_printf("\n"); + next->tri(next, header); +} +#endif + + +static void emit_poly( struct prim_stage *stage, + struct vertex_header **inlist, + GLuint n ) +{ + struct prim_header header; + GLuint i; + + for (i = 2; i < n; i++) { + header.v[0] = inlist[0]; + header.v[1] = inlist[i-1]; + header.v[2] = inlist[i]; + + { + GLuint tmp0 = header.v[0]->edgeflag; + GLuint tmp2 = header.v[2]->edgeflag; + + if (i != 2) header.v[0]->edgeflag = 0; + if (i != n-1) header.v[2]->edgeflag = 0; + + stage->next->tri( stage->next, &header ); + + header.v[0]->edgeflag = tmp0; + header.v[2]->edgeflag = tmp2; + } + } +} + + +#if 0 +static void emit_poly( struct prim_stage *stage ) +{ + GLuint i; + + for (i = 2; i < n; i++) { + header->v[0] = inlist[0]; + header->v[1] = inlist[i-1]; + header->v[2] = inlist[i]; + + stage->next->tri( stage->next, header ); + } +} +#endif + + +/* Clip a triangle against the viewport and user clip planes. + */ +static void +do_clip_tri( struct prim_stage *stage, + struct prim_header *header, + GLuint clipmask ) +{ + struct clipper *clipper = clipper_stage( stage ); + struct vertex_header *a[MAX_CLIPPED_VERTICES]; + struct vertex_header *b[MAX_CLIPPED_VERTICES]; + struct vertex_header **inlist = a; + struct vertex_header **outlist = b; + GLuint tmpnr = 0; + GLuint n = 3; + GLuint i; + + inlist[0] = header->v[0]; + inlist[1] = header->v[1]; + inlist[2] = header->v[2]; + + /* XXX: Note stupid hack to deal with tnl's 8-bit clipmask. Remove + * this once we correctly use 16bit masks for userclip planes. + */ + clipmask &= ~CLIP_CULL_BIT; + if (clipmask & CLIP_USER_BIT) { + clipmask &= ~CLIP_USER_BIT; + clipmask |= clipper->active_user_planes; + } + + while (clipmask && n >= 3) { + GLuint plane_idx = ffs(clipmask)-1; + const GLfloat *plane = clipper->stage.softpipe->plane[plane_idx]; + struct vertex_header *vert_prev = inlist[0]; + GLfloat dp_prev = dot4( vert_prev->clip, plane ); + GLuint outcount = 0; + + clipmask &= ~(1<<plane_idx); + + inlist[n] = inlist[0]; /* prevent rotation of vertices */ + + for (i = 1; i <= n; i++) { + struct vertex_header *vert = inlist[i]; + + GLfloat dp = dot4( vert->clip, plane ); + + if (!IS_NEGATIVE(dp_prev)) { + outlist[outcount++] = vert_prev; + } + + if (DIFFERENT_SIGNS(dp, dp_prev)) { + struct vertex_header *new_vert = clipper->stage.tmp[tmpnr++]; + outlist[outcount++] = new_vert; + + if (IS_NEGATIVE(dp)) { + /* Going out of bounds. Avoid division by zero as we + * know dp != dp_prev from DIFFERENT_SIGNS, above. + */ + GLfloat t = dp / (dp - dp_prev); + interp( clipper, new_vert, t, vert, vert_prev ); + + /* Force edgeflag true in this case: + */ + new_vert->edgeflag = 1; + } else { + /* Coming back in. + */ + GLfloat t = dp_prev / (dp_prev - dp); + interp( clipper, new_vert, t, vert_prev, vert ); + + /* Copy starting vert's edgeflag: + */ + new_vert->edgeflag = vert_prev->edgeflag; + } + } + + vert_prev = vert; + dp_prev = dp; + } + + { + struct vertex_header **tmp = inlist; + inlist = outlist; + outlist = tmp; + n = outcount; + } + } + + /* Emit the polygon as triangles to the setup stage: + */ + if (n >= 3) + emit_poly( stage, inlist, n ); +} + + +/* Clip a line against the viewport and user clip planes. + */ +static void +do_clip_line( struct prim_stage *stage, + struct prim_header *header, + GLuint clipmask ) +{ + struct clipper *clipper = clipper_stage( stage ); + struct vertex_header *v0 = header->v[0]; + struct vertex_header *v1 = header->v[1]; + const GLfloat *pos0 = v0->clip; + const GLfloat *pos1 = v1->clip; + GLfloat t0 = 0; + GLfloat t1 = 0; + + /* XXX: Note stupid hack to deal with tnl's 8-bit clipmask. Remove + * this once we correctly use 16bit masks for userclip planes. + */ + clipmask &= ~CLIP_CULL_BIT; + if (clipmask & CLIP_USER_BIT) { + clipmask &= ~CLIP_USER_BIT; + clipmask |= clipper->active_user_planes; + } + + while (clipmask) { + GLuint plane_idx = ffs(clipmask)-1; + const GLfloat *plane = clipper->stage.softpipe->plane[plane_idx]; + + clipmask &= ~(1<<plane_idx); + + const GLfloat dp0 = dot4( pos0, plane ); + const GLfloat dp1 = dot4( pos1, plane ); + + if (dp1 < 0) { + GLfloat t = dp1 / (dp1 - dp0); + if (t > t1) t1 = t; + } + + if (dp0 < 0) { + GLfloat t = dp0 / (dp0 - dp1); + if (t > t0) t0 = t; + } + + if (t0 + t1 >= 1.0) + return; /* discard */ + } + + if (v0->clipmask) { + interp( clipper, stage->tmp[0], t0, v0, v1 ); + header->v[0] = stage->tmp[0]; + } + + if (v1->clipmask) { + interp( clipper, stage->tmp[1], t1, v1, v0 ); + header->v[1] = stage->tmp[1]; + } + + stage->next->line( stage->next, header ); +} + + + +static void clip_begin( struct prim_stage *stage ) +{ + struct clipper *clipper = clipper_stage(stage); + GLuint nr = stage->softpipe->nr_planes; + + /* Hacky bitmask to use when we hit CLIP_USER_BIT: + */ + clipper->active_user_planes = ((1<<nr)-1) & ~((1<<6)-1); + + stage->next->begin( stage->next ); +} + +static void +clip_point( struct prim_stage *stage, + struct prim_header *header ) +{ + if (header->v[0]->clipmask == 0) + stage->next->point( stage->next, header ); +} + + +static void +clip_line( struct prim_stage *stage, + struct prim_header *header ) +{ + GLuint clipmask = (header->v[0]->clipmask | + header->v[1]->clipmask); + + if (clipmask == 0) { + stage->next->line( stage->next, header ); + } + else if ((header->v[0]->clipmask & + header->v[1]->clipmask) == 0) { + do_clip_line(stage, header, clipmask); + } +} + + +static void +clip_tri( struct prim_stage *stage, + struct prim_header *header ) +{ + GLuint clipmask = (header->v[0]->clipmask | + header->v[1]->clipmask | + header->v[2]->clipmask); + + if (clipmask == 0) { + stage->next->tri( stage->next, header ); + } + else if ((header->v[0]->clipmask & + header->v[1]->clipmask & + header->v[2]->clipmask) == 0) { + do_clip_tri(stage, header, clipmask); + } +} + +static void clip_end( struct prim_stage *stage ) +{ + stage->next->end( stage->next ); +} + + +struct prim_stage *prim_clip( struct softpipe_context *softpipe ) +{ + struct clipper *clipper = CALLOC_STRUCT(clipper); + + prim_alloc_tmps( &clipper->stage, MAX_CLIPPED_VERTICES ); + + clipper->stage.softpipe = softpipe; + clipper->stage.begin = clip_begin; + clipper->stage.point = clip_point; + clipper->stage.line = clip_line; + clipper->stage.tri = clip_tri; + clipper->stage.end = clip_end; + + return &clipper->stage; +} diff --git a/src/mesa/pipe/softpipe/sp_prim_cull.c b/src/mesa/pipe/softpipe/sp_prim_cull.c new file mode 100644 index 0000000000..16920d478a --- /dev/null +++ b/src/mesa/pipe/softpipe/sp_prim_cull.c @@ -0,0 +1,119 @@ +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/* Authors: Keith Whitwell <keith@tungstengraphics.com> + */ +#include "imports.h" + +#include "sp_context.h" +#include "sp_prim.h" + + + +struct cull_stage { + struct prim_stage stage; + GLuint mode; +}; + + + +static INLINE struct cull_stage *cull_stage( struct prim_stage *stage ) +{ + return (struct cull_stage *)stage; +} + + +static void cull_begin( struct prim_stage *stage ) +{ + struct cull_stage *cull = cull_stage(stage); + + cull->mode = stage->softpipe->setup.cull_mode; + + stage->next->begin( stage->next ); +} + + +static void cull_tri( struct prim_stage *stage, + struct prim_header *header ) +{ + /* Window coords: */ + GLfloat *v0 = (GLfloat *)&(header->v[0]->data[0]); + GLfloat *v1 = (GLfloat *)&(header->v[1]->data[0]); + GLfloat *v2 = (GLfloat *)&(header->v[2]->data[0]); + + GLfloat ex = v0[0] - v2[0]; + GLfloat ey = v0[1] - v2[1]; + GLfloat fx = v1[0] - v2[0]; + GLfloat fy = v1[1] - v2[1]; + + header->det = ex * fy - ey * fx; + + _mesa_printf("%s %f\n", __FUNCTION__, header->det ); + + if (header->det != 0) { + GLuint mode = (header->det < 0) ? WINDING_CW : WINDING_CCW; + + if ((mode & cull_stage(stage)->mode) == 0) + stage->next->tri( stage->next, header ); + } +} + + +static void cull_line( struct prim_stage *stage, + struct prim_header *header ) +{ + stage->next->line( stage->next, header ); +} + + +static void cull_point( struct prim_stage *stage, + struct prim_header *header ) +{ + stage->next->point( stage->next, header ); +} + +static void cull_end( struct prim_stage *stage ) +{ + stage->next->end( stage->next ); +} + +struct prim_stage *prim_cull( struct softpipe_context *softpipe ) +{ + struct cull_stage *cull = CALLOC_STRUCT(cull_stage); + + prim_alloc_tmps( &cull->stage, 0 ); + + cull->stage.softpipe = softpipe; + cull->stage.next = NULL; + cull->stage.begin = cull_begin; + cull->stage.point = cull_point; + cull->stage.line = cull_line; + cull->stage.tri = cull_tri; + cull->stage.end = cull_end; + + return &cull->stage; +} diff --git a/src/mesa/pipe/softpipe/sp_prim_flatshade.c b/src/mesa/pipe/softpipe/sp_prim_flatshade.c new file mode 100644 index 0000000000..0e9de5faeb --- /dev/null +++ b/src/mesa/pipe/softpipe/sp_prim_flatshade.c @@ -0,0 +1,149 @@ +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/* Authors: Keith Whitwell <keith@tungstengraphics.com> + */ +#include "imports.h" + +#include "sp_context.h" +#include "sp_prim.h" + + +struct flatshade_stage { + struct prim_stage stage; + + const GLuint *lookup; +}; + + + +static INLINE struct flatshade_stage *flatshade_stage( struct prim_stage *stage ) +{ + return (struct flatshade_stage *)stage; +} + + +static void flatshade_begin( struct prim_stage *stage ) +{ + stage->next->begin( stage->next ); +} + + + +static INLINE void copy_attr( GLuint attr, + struct vertex_header *dst, + const struct vertex_header *src ) +{ + if (attr) { + memcpy( dst->data[attr], + src->data[attr], + sizeof(src->data[0]) ); + } +} + +static void copy_colors( struct prim_stage *stage, + struct vertex_header *dst, + const struct vertex_header *src ) +{ + struct flatshade_stage *flatshade = flatshade_stage(stage); + const GLuint *lookup = flatshade->lookup; + + copy_attr( lookup[VF_ATTRIB_COLOR0], dst, src ); + copy_attr( lookup[VF_ATTRIB_COLOR1], dst, src ); + copy_attr( lookup[VF_ATTRIB_BFC0], dst, src ); + copy_attr( lookup[VF_ATTRIB_BFC1], dst, src ); +} + + + +/* Flatshade tri. Required for clipping and when unfilled tris are + * active, otherwise handled by hardware. + */ +static void flatshade_tri( struct prim_stage *stage, + struct prim_header *header ) +{ + struct prim_header tmp; + + tmp.det = header->det; + tmp.v[0] = dup_vert(stage, header->v[0], 0); + tmp.v[1] = dup_vert(stage, header->v[1], 1); + tmp.v[2] = header->v[2]; + + copy_colors(stage, tmp.v[0], tmp.v[2]); + copy_colors(stage, tmp.v[1], tmp.v[2]); + + stage->next->tri( stage->next, &tmp ); +} + + +/* Flatshade line. Required for clipping. + */ +static void flatshade_line( struct prim_stage *stage, + struct prim_header *header ) +{ + struct prim_header tmp; + + tmp.v[0] = dup_vert(stage, header->v[0], 0); + tmp.v[1] = header->v[1]; + + copy_colors(stage, tmp.v[0], tmp.v[1]); + + stage->next->line( stage->next, &tmp ); +} + + +static void flatshade_point( struct prim_stage *stage, + struct prim_header *header ) +{ + stage->next->point( stage->next, header ); +} + +static void flatshade_end( struct prim_stage *stage ) +{ + stage->next->end( stage->next ); +} + +struct prim_stage *prim_flatshade( struct softpipe_context *softpipe ) +{ + struct flatshade_stage *flatshade = CALLOC_STRUCT(flatshade_stage); + + prim_alloc_tmps( &flatshade->stage, 2 ); + + flatshade->stage.softpipe = softpipe; + flatshade->stage.next = NULL; + flatshade->stage.begin = flatshade_begin; + flatshade->stage.point = flatshade_point; + flatshade->stage.line = flatshade_line; + flatshade->stage.tri = flatshade_tri; + flatshade->stage.end = flatshade_end; + + flatshade->lookup = softpipe->vf_attr_to_slot; + + return &flatshade->stage; +} + + diff --git a/src/mesa/pipe/softpipe/sp_prim_offset.c b/src/mesa/pipe/softpipe/sp_prim_offset.c new file mode 100644 index 0000000000..5fd6ac911a --- /dev/null +++ b/src/mesa/pipe/softpipe/sp_prim_offset.c @@ -0,0 +1,157 @@ +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/* Authors: Keith Whitwell <keith@tungstengraphics.com> + */ +#include "imports.h" +#include "macros.h" + +#include "sp_context.h" +#include "sp_prim.h" + + + +struct offset_stage { + struct prim_stage stage; + + GLuint hw_data_offset; + + GLfloat scale; + GLfloat units; +}; + + + +static INLINE struct offset_stage *offset_stage( struct prim_stage *stage ) +{ + return (struct offset_stage *)stage; +} + + +static void offset_begin( struct prim_stage *stage ) +{ + struct offset_stage *offset = offset_stage(stage); + + offset->units = stage->softpipe->setup.offset_units; + offset->scale = stage->softpipe->setup.offset_scale; + + stage->next->begin( stage->next ); +} + + +/* Offset tri. Some hardware can handle this, but not usually when + * doing unfilled rendering. + */ +static void do_offset_tri( struct prim_stage *stage, + struct prim_header *header ) +{ + struct offset_stage *offset = offset_stage(stage); + GLfloat inv_det = 1.0 / header->det; + + /* Window coords: + */ + GLfloat *v0 = (GLfloat *)&(header->v[0]->data[0]); + GLfloat *v1 = (GLfloat *)&(header->v[1]->data[0]); + GLfloat *v2 = (GLfloat *)&(header->v[2]->data[0]); + + GLfloat ex = v0[0] - v2[2]; + GLfloat fx = v1[0] - v2[2]; + GLfloat ey = v0[1] - v2[2]; + GLfloat fy = v1[1] - v2[2]; + GLfloat ez = v0[2] - v2[2]; + GLfloat fz = v1[2] - v2[2]; + + GLfloat a = ey*fz - ez*fy; + GLfloat b = ez*fx - ex*fz; + + GLfloat ac = a * inv_det; + GLfloat bc = b * inv_det; + GLfloat zoffset; + + if ( ac < 0.0f ) ac = -ac; + if ( bc < 0.0f ) bc = -bc; + + zoffset = offset->units + MAX2( ac, bc ) * offset->scale; + + v0[2] += zoffset; + v1[2] += zoffset; + v2[2] += zoffset; + + stage->next->tri( stage->next, header ); +} + + +static void offset_tri( struct prim_stage *stage, + struct prim_header *header ) +{ + struct prim_header tmp; + + tmp.det = header->det; + tmp.v[0] = dup_vert(stage, header->v[0], 0); + tmp.v[1] = dup_vert(stage, header->v[1], 1); + tmp.v[2] = dup_vert(stage, header->v[2], 2); + + do_offset_tri( stage->next, &tmp ); +} + + + +static void offset_line( struct prim_stage *stage, + struct prim_header *header ) +{ + stage->next->line( stage->next, header ); +} + + +static void offset_point( struct prim_stage *stage, + struct prim_header *header ) +{ + stage->next->point( stage->next, header ); +} + + +static void offset_end( struct prim_stage *stage ) +{ + stage->next->end( stage->next ); +} + +struct prim_stage *prim_offset( struct softpipe_context *softpipe ) +{ + struct offset_stage *offset = CALLOC_STRUCT(offset_stage); + + prim_alloc_tmps( &offset->stage, 3 ); + + offset->stage.softpipe = softpipe; + offset->stage.next = NULL; + offset->stage.begin = offset_begin; + offset->stage.point = offset_point; + offset->stage.line = offset_line; + offset->stage.tri = offset_tri; + offset->stage.end = offset_end; + + return &offset->stage; +} diff --git a/src/mesa/pipe/softpipe/sp_prim_setup.c b/src/mesa/pipe/softpipe/sp_prim_setup.c new file mode 100644 index 0000000000..a1addc4ee1 --- /dev/null +++ b/src/mesa/pipe/softpipe/sp_prim_setup.c @@ -0,0 +1,888 @@ +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/* Authors: Keith Whitwell <keith@tungstengraphics.com> + */ + +#include "imports.h" +#include "macros.h" + +#include "sp_context.h" +#include "sp_prim.h" +#include "sp_tile.h" + + +/** + * Triangle edge info + */ +struct edge { + GLfloat dx; /* X(v1) - X(v0), used only during setup */ + GLfloat dy; /* Y(v1) - Y(v0), used only during setup */ + GLfloat dxdy; /* dx/dy */ + GLfloat sx; /* first sample point x coord */ + GLfloat sy; + GLint lines; /* number of lines on this edge */ +}; + + +/** + * Triangle setup info (derived from prim_stage). + * Also used for line drawing (taking some liberties). + */ +struct setup_stage { + struct prim_stage stage; /**< This must be first */ + + /* Vertices are just an array of floats making up each attribute in + * turn. Currently fixed at 4 floats, but should change in time. + * Codegen will help cope with this. + */ + const struct vertex_header *vmax; + const struct vertex_header *vmid; + const struct vertex_header *vmin; + const struct vertex_header *vprovoke; + + struct edge ebot; + struct edge etop; + struct edge emaj; + + GLfloat oneoverarea; + + struct setup_coefficient coef[FRAG_ATTRIB_MAX]; + struct quad_header quad; + + struct { + GLint left[2]; /**< [0] = row0, [1] = row1 */ + GLint right[2]; + GLint y; + GLuint y_flags; + GLuint mask; /**< mask of MASK_BOTTOM/TOP_LEFT/RIGHT bits */ + } span; +}; + + + +/** + * Basically a cast wrapper. + */ +static inline struct setup_stage *setup_stage( struct prim_stage *stage ) +{ + return (struct setup_stage *)stage; +} + + +/** + * Given an X or Y coordinate, return the block/quad coordinate that it + * belongs to. + */ +static inline GLint block( GLint x ) +{ + return x & ~1; +} + + + +static void setup_begin( struct prim_stage *stage ) +{ + setup_stage(stage)->quad.nr_attrs = stage->softpipe->nr_frag_attrs; +} + + +/** + * Run shader on a quad/block. + */ +static void run_shader_block( struct setup_stage *setup, + GLint x, GLint y, GLuint mask ) +{ + setup->quad.x0 = x; + setup->quad.y0 = y; + setup->quad.mask = mask; + + quad_shade( setup->stage.softpipe, &setup->quad ); +} + + +/** + * Compute mask which indicates which pixels in the 2x2 quad are actually inside + * the triangle's bounds. + * + * this is pretty nasty... may need to rework flush_spans again to + * fix it, if possible. + */ +static GLuint calculate_mask( struct setup_stage *setup, + GLint x ) +{ + GLuint mask = 0; + + if (x >= setup->span.left[0] && x < setup->span.right[0]) + mask |= MASK_BOTTOM_LEFT; + + if (x >= setup->span.left[1] && x < setup->span.right[1]) + mask |= MASK_TOP_LEFT; + + if (x+1 >= setup->span.left[0] && x+1 < setup->span.right[0]) + mask |= MASK_BOTTOM_RIGHT; + + if (x+1 >= setup->span.left[1] && x+1 < setup->span.right[1]) + mask |= MASK_TOP_RIGHT; + + return mask; +} + + +/** + * Render a horizontal span of quads + */ +static void flush_spans( struct setup_stage *setup ) +{ + GLint minleft, maxright; + GLint x; + + switch (setup->span.y_flags) { + case 3: + minleft = MIN2(setup->span.left[0], setup->span.left[1]); + maxright = MAX2(setup->span.right[0], setup->span.right[1]); + break; + + case 1: + minleft = setup->span.left[0]; + maxright = setup->span.right[0]; + break; + + case 2: + minleft = setup->span.left[1]; + maxright = setup->span.right[1]; + break; + + default: + return; + } + + + for (x = block(minleft); x <= block(maxright); ) + { + run_shader_block( setup, x, + setup->span.y, + calculate_mask( setup, x ) ); + x += 2; + } + + setup->span.y = 0; + setup->span.y_flags = 0; + setup->span.right[0] = 0; + setup->span.right[1] = 0; +} + + +static GLboolean setup_sort_vertices( struct setup_stage *setup, + const struct prim_header *prim ) +{ + const struct vertex_header *v0 = prim->v[0]; + const struct vertex_header *v1 = prim->v[1]; + const struct vertex_header *v2 = prim->v[2]; + + setup->vprovoke = v2; + + /* determine bottom to top order of vertices */ + { + GLfloat y0 = v0->data[0][1]; + GLfloat y1 = v1->data[0][1]; + GLfloat y2 = v2->data[0][1]; + if (y0 <= y1) { + if (y1 <= y2) { + /* y0<=y1<=y2 */ + setup->vmin = v0; + setup->vmid = v1; + setup->vmax = v2; + } + else if (y2 <= y0) { + /* y2<=y0<=y1 */ + setup->vmin = v2; + setup->vmid = v0; + setup->vmax = v1; + } + else { + /* y0<=y2<=y1 */ + setup->vmin = v0; + setup->vmid = v2; + setup->vmax = v1; + } + } + else { + if (y0 <= y2) { + /* y1<=y0<=y2 */ + setup->vmin = v1; + setup->vmid = v0; + setup->vmax = v2; + } + else if (y2 <= y1) { + /* y2<=y1<=y0 */ + setup->vmin = v2; + setup->vmid = v1; + setup->vmax = v0; + } + else { + /* y1<=y2<=y0 */ + setup->vmin = v1; + setup->vmid = v2; + setup->vmax = v0; + } + } + } + + setup->ebot.dx = setup->vmid->data[0][0] - setup->vmin->data[0][0]; + setup->ebot.dy = setup->vmid->data[0][1] - setup->vmin->data[0][1]; + setup->emaj.dx = setup->vmax->data[0][0] - setup->vmin->data[0][0]; + setup->emaj.dy = setup->vmax->data[0][1] - setup->vmin->data[0][1]; + setup->etop.dx = setup->vmax->data[0][0] - setup->vmid->data[0][0]; + setup->etop.dy = setup->vmax->data[0][1] - setup->vmid->data[0][1]; + + /* xxx: may need to adjust this sign according to the if-tree + * above: + * + * XXX: this is like 'det', but calculated from screen coords?? + */ + { + const GLfloat area = (setup->emaj.dx * setup->ebot.dy - + setup->ebot.dx * setup->emaj.dy); + + setup->oneoverarea = 1.0 / area; + } + + /* XXX need to know if this is a front or back-facing triangle: + * - the GLSL gl_FrontFacing fragment attribute (bool) + * - two-sided stencil test + */ + setup->quad.facing = 0; + + _mesa_printf("%s one-over-area %f\n", __FUNCTION__, setup->oneoverarea ); + + + return GL_TRUE; +} + + +/** + * Compute a0 for a constant-valued coefficient (GL_FLAT shading). + */ +static void const_coeff( struct setup_stage *setup, + GLuint slot, + GLuint i ) +{ + setup->coef[slot].dadx[i] = 0; + setup->coef[slot].dady[i] = 0; + + /* need provoking vertex info! + */ + setup->coef[slot].a0[i] = setup->vprovoke->data[slot][i]; +} + + +/** + * Compute a0, dadx and dady for a linearly interpolated coefficient, + * for a triangle. + */ +static void tri_linear_coeff( struct setup_stage *setup, + GLuint slot, + GLuint i) +{ + GLfloat botda = setup->vmid->data[slot][i] - setup->vmin->data[slot][i]; + GLfloat majda = setup->vmax->data[slot][i] - setup->vmin->data[slot][i]; + GLfloat a = setup->ebot.dy * majda - botda * setup->emaj.dy; + GLfloat b = setup->emaj.dx * botda - majda * setup->ebot.dx; + + setup->coef[slot].dadx[i] = a * setup->oneoverarea; + setup->coef[slot].dady[i] = b * setup->oneoverarea; + + /* calculate a0 as the value which would be sampled for the + * fragment at (0,0), taking into account that we want to sample at + * pixel centers, in other words (0.5, 0.5). + * + * this is neat but unfortunately not a good way to do things for + * triangles with very large values of dadx or dady as it will + * result in the subtraction and re-addition from a0 of a very + * large number, which means we'll end up loosing a lot of the + * fractional bits and precision from a0. the way to fix this is + * to define a0 as the sample at a pixel center somewhere near vmin + * instead - i'll switch to this later. + */ + setup->coef[slot].a0[i] = (setup->vmin->data[slot][i] - + (setup->coef[slot].dadx[i] * (setup->vmin->data[0][0] - 0.5) + + setup->coef[slot].dady[i] * (setup->vmin->data[0][1] - 0.5))); + + _mesa_printf("attr[%d].%c: %f dx:%f dy:%f\n", + slot, "xyzw"[i], + setup->coef[slot].a0[i], + setup->coef[slot].dadx[i], + setup->coef[slot].dady[i]); +} + + +/** + * Compute a0, dadx and dady for a perspective-corrected interpolant, + * for a triangle. + */ +static void tri_persp_coeff( struct setup_stage *setup, + GLuint slot, + GLuint i ) +{ + /* premultiply by 1/w: + */ + GLfloat mina = setup->vmin->data[slot][i] * setup->vmin->data[0][3]; + GLfloat mida = setup->vmid->data[slot][i] * setup->vmid->data[0][3]; + GLfloat maxa = setup->vmax->data[slot][i] * setup->vmax->data[0][3]; + + GLfloat botda = mida - mina; + GLfloat majda = maxa - mina; + GLfloat a = setup->ebot.dy * majda - botda * setup->emaj.dy; + GLfloat b = setup->emaj.dx * botda - majda * setup->ebot.dx; + + setup->coef[slot].dadx[i] = a * setup->oneoverarea; + setup->coef[slot].dady[i] = b * setup->oneoverarea; + setup->coef[slot].a0[i] = (mina - + (setup->coef[slot].dadx[i] * (setup->vmin->data[0][0] - 0.5) + + setup->coef[slot].dady[i] * (setup->vmin->data[0][1] - 0.5))); +} + + + +/** + * Compute the setup->coef[] array dadx, dady, a0 values. + * Must be called after setup->vmin,vmid,vmax,vprovoke are initialized. + */ +static void setup_tri_coefficients( struct setup_stage *setup ) +{ + const enum interp_mode *interp = setup->stage.softpipe->interp; + GLuint slot, j; + + /* z and w are done by linear interpolation: + */ + tri_linear_coeff(setup, 0, 2); + tri_linear_coeff(setup, 0, 3); + + /* setup interpolation for all the remaining attributes: + */ + for (slot = 1; slot < setup->quad.nr_attrs; slot++) { + switch (interp[slot]) { + case INTERP_CONSTANT: + for (j = 0; j < NUM_CHANNELS; j++) + const_coeff(setup, slot, j); + break; + + case INTERP_LINEAR: + for (j = 0; j < NUM_CHANNELS; j++) + tri_linear_coeff(setup, slot, j); + break; + + case INTERP_PERSPECTIVE: + for (j = 0; j < NUM_CHANNELS; j++) + tri_persp_coeff(setup, slot, j); + break; + } + } +} + + + +static void setup_tri_edges( struct setup_stage *setup ) +{ + GLfloat vmin_x = setup->vmin->data[0][0] + 0.5; + GLfloat vmid_x = setup->vmid->data[0][0] + 0.5; + + GLfloat vmin_y = setup->vmin->data[0][1] - 0.5; + GLfloat vmid_y = setup->vmid->data[0][1] - 0.5; + GLfloat vmax_y = setup->vmax->data[0][1] - 0.5; + + setup->emaj.sy = ceilf(vmin_y); + setup->emaj.lines = (GLint) ceilf(vmax_y - setup->emaj.sy); + setup->emaj.dxdy = setup->emaj.dx / setup->emaj.dy; + setup->emaj.sx = vmin_x + (setup->emaj.sy - vmin_y) * setup->emaj.dxdy; + + setup->etop.sy = ceilf(vmid_y); + setup->etop.lines = (GLint) ceilf(vmax_y - setup->etop.sy); + setup->etop.dxdy = setup->etop.dx / setup->etop.dy; + setup->etop.sx = vmid_x + (setup->etop.sy - vmid_y) * setup->etop.dxdy; + + setup->ebot.sy = ceilf(vmin_y); + setup->ebot.lines = (GLint) ceilf(vmid_y - setup->ebot.sy); + setup->ebot.dxdy = setup->ebot.dx / setup->ebot.dy; + setup->ebot.sx = vmin_x + (setup->ebot.sy - vmin_y) * setup->ebot.dxdy; +} + + +/** + * Render the upper or lower half of a triangle. + * Scissoring is applied here too. + */ +static void subtriangle( struct setup_stage *setup, + struct edge *eleft, + struct edge *eright, + GLuint lines ) +{ + GLint y, start_y, finish_y; + GLint sy = (GLint)eleft->sy; + + assert((GLint)eleft->sy == (GLint) eright->sy); + assert((GLint)eleft->sy >= 0); /* catch bug in x64? */ + + /* scissor y: + */ + if (setup->stage.softpipe->setup.scissor) { + start_y = sy; + finish_y = start_y + lines; + + if (start_y < setup->stage.softpipe->scissor.miny) + start_y = setup->stage.softpipe->scissor.miny; + + if (finish_y > setup->stage.softpipe->scissor.maxy) + finish_y = setup->stage.softpipe->scissor.maxy; + + start_y -= sy; + finish_y -= sy; + } + else { + start_y = 0; + finish_y = lines; + } + + _mesa_printf("%s %d %d\n", __FUNCTION__, start_y, finish_y); + + for (y = start_y; y < finish_y; y++) { + + /* avoid accumulating adds as floats don't have the precision to + * accurately iterate large triangle edges that way. luckily we + * can just multiply these days. + * + * this is all drowned out by the attribute interpolation anyway. + */ + GLint left = (GLint)(eleft->sx + y * eleft->dxdy); + GLint right = (GLint)(eright->sx + y * eright->dxdy); + + /* scissor x: + */ + if (setup->stage.softpipe->setup.scissor) { + if (left < setup->stage.softpipe->scissor.minx) + left = setup->stage.softpipe->scissor.minx; + + if (right > setup->stage.softpipe->scissor.maxx) + right = setup->stage.softpipe->scissor.maxx; + } + + if (left < right) { + GLint _y = sy+y; + if (block(_y) != setup->span.y) { + flush_spans(setup); + setup->span.y = block(_y); + } + + setup->span.left[_y&1] = left; + setup->span.right[_y&1] = right; + setup->span.y_flags |= 1<<(_y&1); + } + } + + + /* save the values so that emaj can be restarted: + */ + eleft->sx += lines * eleft->dxdy; + eright->sx += lines * eright->dxdy; + eleft->sy += lines; + eright->sy += lines; +} + + +/** + * Do setup for triangle rasterization, then render the triangle. + */ +static void setup_tri( struct prim_stage *stage, + struct prim_header *prim ) +{ + struct setup_stage *setup = setup_stage( stage ); + + _mesa_printf("%s\n", __FUNCTION__ ); + + setup_sort_vertices( setup, prim ); + setup_tri_coefficients( setup ); + setup_tri_edges( setup ); + + setup->span.y = 0; + setup->span.y_flags = 0; + setup->span.right[0] = 0; + setup->span.right[1] = 0; +// setup->span.z_mode = tri_z_mode( setup->ctx ); + +// init_constant_attribs( setup ); + + if (setup->oneoverarea < 0.0) { + /* emaj on left: + */ + subtriangle( setup, &setup->emaj, &setup->ebot, setup->ebot.lines ); + subtriangle( setup, &setup->emaj, &setup->etop, setup->etop.lines ); + } + else { + /* emaj on right: + */ + subtriangle( setup, &setup->ebot, &setup->emaj, setup->ebot.lines ); + subtriangle( setup, &setup->etop, &setup->emaj, setup->etop.lines ); + } + + flush_spans( setup ); +} + + + +/** + * Compute a0, dadx and dady for a linearly interpolated coefficient, + * for a line. + */ +static void +line_linear_coeff(struct setup_stage *setup, GLuint slot, GLuint i) +{ + const GLfloat dz = setup->vmax->data[slot][i] - setup->vmin->data[slot][i]; + const GLfloat dadx = dz * setup->emaj.dx * setup->oneoverarea; + const GLfloat dady = dz * setup->emaj.dy * setup->oneoverarea; + setup->coef[slot].dadx[i] = dadx; + setup->coef[slot].dady[i] = dady; + setup->coef[slot].a0[i] + = (setup->vmin->data[slot][i] - + (dadx * (setup->vmin->data[0][0] - 0.5) + + dady * (setup->vmin->data[0][1] - 0.5))); +} + + +/** + * Compute a0, dadx and dady for a perspective-corrected interpolant, + * for a line. + */ +static void +line_persp_coeff(struct setup_stage *setup, GLuint slot, GLuint i) +{ + /* XXX to do */ + line_linear_coeff(setup, slot, i); /* XXX temporary */ +} + + +/** + * Compute the setup->coef[] array dadx, dady, a0 values. + * Must be called after setup->vmin,vmax are initialized. + */ +static INLINE void +setup_line_coefficients(struct setup_stage *setup, struct prim_header *prim) +{ + const enum interp_mode *interp = setup->stage.softpipe->interp; + GLuint slot, j; + + /* use setup->vmin, vmax to point to vertices */ + setup->vprovoke = prim->v[1]; + setup->vmin = prim->v[0]; + setup->vmax = prim->v[1]; + + setup->emaj.dx = setup->vmax->data[0][0] - setup->vmin->data[0][0]; + setup->emaj.dy = setup->vmax->data[0][1] - setup->vmin->data[0][1]; + /* NOTE: this is not really 1/area */ + setup->oneoverarea = 1.0 / (setup->emaj.dx * setup->emaj.dx + + setup->emaj.dy * setup->emaj.dy); + + /* z and w are done by linear interpolation: + */ + line_linear_coeff(setup, 0, 2); + line_linear_coeff(setup, 0, 3); + + /* setup interpolation for all the remaining attributes: + */ + for (slot = 1; slot < setup->quad.nr_attrs; slot++) { + switch (interp[slot]) { + case INTERP_CONSTANT: + for (j = 0; j < NUM_CHANNELS; j++) + const_coeff(setup, slot, j); + break; + + case INTERP_LINEAR: + for (j = 0; j < NUM_CHANNELS; j++) + line_linear_coeff(setup, slot, j); + break; + + case INTERP_PERSPECTIVE: + for (j = 0; j < NUM_CHANNELS; j++) + line_persp_coeff(setup, slot, j); + break; + } + } +} + + +/** + * Plot a pixel in a line segment. + */ +static INLINE void +plot(struct setup_stage *setup, GLint x, GLint y) +{ + const GLint iy = y & 1; + const GLint ix = x & 1; + const GLint quadX = x - ix; + const GLint quadY = y - iy; + const GLint mask = (1 << ix) << (2 * iy); + + if (quadX != setup->quad.x0 || + quadY != setup->quad.y0) + { + /* flush prev quad, start new quad */ + + if (setup->quad.x0 != -1) + quad_shade(setup->stage.softpipe, &setup->quad); + + setup->quad.x0 = quadX; + setup->quad.y0 = quadY; + setup->quad.mask = 0x0; + } + + setup->quad.mask |= mask; +} + + + +/** + * Do setup for line rasterization, then render the line. + * XXX single-pixel width, no stipple, etc + * XXX no scissoring yet. + */ +static void +setup_line(struct prim_stage *stage, struct prim_header *prim) +{ + const struct vertex_header *v0 = prim->v[0]; + const struct vertex_header *v1 = prim->v[1]; + struct setup_stage *setup = setup_stage( stage ); + + GLint x0 = (GLint) v0->data[0][0]; + GLint x1 = (GLint) v1->data[0][0]; + GLint y0 = (GLint) v0->data[0][1]; + GLint y1 = (GLint) v1->data[0][1]; + GLint dx = x1 - x0; + GLint dy = y1 - y0; + GLint xstep, ystep; + + if (dx == 0 && dy == 0) + return; + + setup_line_coefficients(setup, prim); + + if (dx < 0) { + dx = -dx; /* make positive */ + xstep = -1; + } + else { + xstep = 1; + } + + if (dy < 0) { + dy = -dy; /* make positive */ + ystep = -1; + } + else { + ystep = 1; + } + + assert(dx >= 0); + assert(dy >= 0); + + setup->quad.x0 = setup->quad.y0 = -1; + setup->quad.mask = 0x0; + + if (dx > dy) { + /*** X-major line ***/ + GLint i; + const GLint errorInc = dy + dy; + GLint error = errorInc - dx; + const GLint errorDec = error - dx; + + for (i = 0; i < dx; i++) { + plot(setup, x0, y0); + + x0 += xstep; + if (error < 0) { + error += errorInc; + } + else { + error += errorDec; + y0 += ystep; + } + } + } + else { + /*** Y-major line ***/ + GLint i; + const GLint errorInc = dx + dx; + GLint error = errorInc - dy; + const GLint errorDec = error - dy; + + for (i = 0; i < dy; i++) { + plot(setup, x0, y0); + + y0 += ystep; + + if (error < 0) { + error += errorInc; + } + else { + error += errorDec; + x0 += xstep; + } + } + } + + /* draw final quad */ + if (setup->quad.mask) { + quad_shade(setup->stage.softpipe, &setup->quad); + } +} + + +/** + * Do setup for point rasterization, then render the point. + * Round or square points... + * XXX could optimize a lot for 1-pixel points. + */ +static void +setup_point(struct prim_stage *stage, struct prim_header *prim) +{ + struct setup_stage *setup = setup_stage( stage ); + GLfloat halfSize = 7.3; /*XXX this is a vertex attrib */ + GLfloat halfSizeSquared = halfSize * halfSize; + const struct vertex_header *v0 = prim->v[0]; + const GLfloat x = v0->data[FRAG_ATTRIB_WPOS][0]; + const GLfloat y = v0->data[FRAG_ATTRIB_WPOS][1]; + const GLint ixmin = block((GLint) (x - halfSize)); + const GLint ixmax = block((GLint) (x + halfSize)); + const GLint iymin = block((GLint) (y - halfSize)); + const GLint iymax = block((GLint) (y + halfSize)); + GLboolean round = GL_TRUE; + GLint ix, iy; + GLuint slot, j; + + /* For points, all interpolants are constant-valued. + * However, for point sprites, we'll need to setup texcoords appropriately. + * XXX: which coefficients are the texcoords??? + * We may do point sprites as textured quads... + * + * KW: We don't know which coefficients are texcoords - ultimately + * the choice of what interpolation mode to use for each attribute + * should be determined by the fragment program, using + * per-attribute declaration statements that include interpolation + * mode as a parameter. So either the fragment program will have + * to be adjusted for pointsprite vs normal point behaviour, or + * otherwise a special interpolation mode will have to be defined + * which matches the required behaviour for point sprites. But - + * the latter is not a feature of normal hardware, and as such + * probably should be ruled out on that basis. + */ + setup->vprovoke = prim->v[0]; + const_coeff(setup, 0, 2); + const_coeff(setup, 0, 3); + for (slot = 1; slot < setup->quad.nr_attrs; slot++) { + for (j = 0; j < NUM_CHANNELS; j++) + const_coeff(setup, slot, j); + } + + /* XXX need to clip against scissor bounds too */ + + for (iy = iymin; iy <= iymax; iy += 2) { + for (ix = ixmin; ix <= ixmax; ix += 2) { + + if (round) { + /* rounded points */ + /* XXX for GL_SMOOTH, need to compute per-fragment coverage too */ + GLfloat dx, dy; + + setup->quad.mask = 0x0; + + dx = (ix + 0.5) - x; + dy = (iy + 0.5) - y; + if (dx * dx + dy * dy <= halfSizeSquared) + setup->quad.mask |= MASK_BOTTOM_LEFT; + + dx = (ix + 1.5) - x; + dy = (iy + 0.5) - y; + if (dx * dx + dy * dy <= halfSizeSquared) + setup->quad.mask |= MASK_BOTTOM_RIGHT; + + dx = (ix + 0.5) - x; + dy = (iy + 1.5) - y; + if (dx * dx + dy * dy <= halfSizeSquared) + setup->quad.mask |= MASK_TOP_LEFT; + + dx = (ix + 1.5) - x; + dy = (iy + 1.5) - y; + if (dx * dx + dy * dy <= halfSizeSquared) + setup->quad.mask |= MASK_TOP_RIGHT; + } + else { + /* square points */ + setup->quad.mask = 0xf; + + if (ix + 0.5 < x - halfSize) + setup->quad.mask &= (MASK_BOTTOM_RIGHT | MASK_TOP_RIGHT); + + if (ix + 1.5 > x + halfSize) + setup->quad.mask &= (MASK_BOTTOM_LEFT | MASK_TOP_LEFT); + + if (iy + 0.5 < y - halfSize) + setup->quad.mask &= (MASK_TOP_LEFT | MASK_TOP_RIGHT); + + if (iy + 1.5 > y + halfSize) + setup->quad.mask &= (MASK_BOTTOM_LEFT | MASK_BOTTOM_RIGHT); + } + + if (setup->quad.mask) { + setup->quad.x0 = ix; + setup->quad.y0 = iy; + quad_shade( setup->stage.softpipe, &setup->quad ); + } + } + } +} + + + +static void setup_end( struct prim_stage *stage ) +{ +} + + +struct prim_stage *prim_setup( struct softpipe_context *softpipe ) +{ + struct setup_stage *setup = CALLOC_STRUCT(setup_stage); + + setup->stage.softpipe = softpipe; + setup->stage.begin = setup_begin; + setup->stage.point = setup_point; + setup->stage.line = setup_line; + setup->stage.tri = setup_tri; + setup->stage.end = setup_end; + + setup->quad.coef = setup->coef; + + return &setup->stage; +} diff --git a/src/mesa/pipe/softpipe/sp_prim_setup.h b/src/mesa/pipe/softpipe/sp_prim_setup.h new file mode 100644 index 0000000000..40a70c543e --- /dev/null +++ b/src/mesa/pipe/softpipe/sp_prim_setup.h @@ -0,0 +1,121 @@ +/* + * Mesa 3-D graphics library + * Version: 6.5 + * + * Copyright (C) 1999-2005 Brian Paul All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN + * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +#ifndef S_TRI_H +#define S_TRI_H + +/* Vertices are just an array of floats, with all the attributes + * packed. We currently assume a layout like: + * + * attr[0][0..3] - window position + * attr[1..n][0..3] - remaining attributes. + * + * Attributes are assumed to be 4 floats wide but are packed so that + * all the enabled attributes run contiguously. + */ + +#include "glheader.h" +#include "imports.h" +#include "s_tri_public.h" +#include "s_context.h" + + + +struct tri_context; +struct fp_context; +struct be_context; + +/* Note the rasterizer does not take a GLcontext argument. This is + * deliberate. + */ +struct tri_context *tri_create_context( GLcontext *ctx ); + +void tri_destroy_context( struct tri_context *tri ); + +void tri_set_fp_context( struct tri_context *tri, + struct fp_context *fp, + void (*fp_run)( struct fp_context *fp, + const struct fp_inputs *, + struct fp_outputs * )); + + +void tri_set_be_context( struct tri_context *tri, + struct be_context *be, + void (*be_run)( struct be_context *be, + const struct fp_outputs * )); + +void tri_set_attribs( struct tri_context *tri, + const struct attr_info *info, + GLuint nr_attrib ); + +void tri_set_backface( struct tri_context *tri, + GLfloat backface ); + +void tri_set_scissor( struct tri_context *tri, + GLint x, + GLint y, + GLuint width, + GLuint height, + GLboolean enabled ); + +void tri_set_stipple( struct tri_context *tri, + const GLuint *pattern, + GLboolean enabled ); + +/* Unfilled triangles will be handled elsewhere (higher in the + * pipeline), as will things like stipple (lower in the pipeline). + */ + +void tri_triangle( struct tri_context *tri, + const struct vertex *v0, + const struct vertex *v1, + const struct vertex *v2 ); + +/* TODO: rasterize_line, rasterize_point?? + * How will linestipple work? + */ + + +#ifdef SETUP_PRIVATE + + + + + + +GLboolean tri_setup( struct tri_context *tri, + const struct vertex *v0, + const struct vertex *v1, + const struct vertex *v2 ); + +void tri_rasterize( struct tri_context *tri ); +void tri_rasterize_spans( struct tri_context *tri ); + + + + + + +#endif +#endif diff --git a/src/mesa/pipe/softpipe/sp_prim_twoside.c b/src/mesa/pipe/softpipe/sp_prim_twoside.c new file mode 100644 index 0000000000..6eee1de588 --- /dev/null +++ b/src/mesa/pipe/softpipe/sp_prim_twoside.c @@ -0,0 +1,149 @@ +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/* Authors: Keith Whitwell <keith@tungstengraphics.com> + */ +#include "imports.h" +#include "sp_context.h" +#include "sp_prim.h" + + +struct twoside_stage { + struct prim_stage stage; + + GLfloat facing; + const GLuint *lookup; +}; + + +static INLINE struct twoside_stage *twoside_stage( struct prim_stage *stage ) +{ + return (struct twoside_stage *)stage; +} + + +static void twoside_begin( struct prim_stage *stage ) +{ + struct twoside_stage *twoside = twoside_stage(stage); + + twoside->facing = (stage->softpipe->setup.front_winding == WINDING_CW) ? -1 : 1; + + stage->next->begin( stage->next ); +} + + +static INLINE void copy_color( GLuint attr_dst, + GLuint attr_src, + struct vertex_header *v ) +{ + if (attr_dst && attr_src) { + memcpy( v->data[attr_dst], + v->data[attr_src], + sizeof(v->data[0]) ); + } +} + + +static struct vertex_header *copy_bfc( struct twoside_stage *twoside, + const struct vertex_header *v, + GLuint idx ) +{ + struct vertex_header *tmp = dup_vert( &twoside->stage, v, idx ); + + copy_color( twoside->lookup[VF_ATTRIB_COLOR0], + twoside->lookup[VF_ATTRIB_BFC0], + tmp ); + + copy_color( twoside->lookup[VF_ATTRIB_COLOR1], + twoside->lookup[VF_ATTRIB_BFC1], + tmp ); + + return tmp; +} + + +/* Twoside tri: + */ +static void twoside_tri( struct prim_stage *stage, + struct prim_header *header ) +{ + struct twoside_stage *twoside = twoside_stage(stage); + + if (header->det * twoside->facing < 0) { + struct prim_header tmp; + + tmp.det = header->det; + tmp.v[0] = copy_bfc(twoside, header->v[0], 0); + tmp.v[1] = copy_bfc(twoside, header->v[1], 1); + tmp.v[2] = copy_bfc(twoside, header->v[2], 2); + + stage->next->tri( stage->next, &tmp ); + } + else { + stage->next->tri( stage->next, header ); + } +} + + +static void twoside_line( struct prim_stage *stage, + struct prim_header *header ) +{ + stage->next->line( stage->next, header ); +} + + +static void twoside_point( struct prim_stage *stage, + struct prim_header *header ) +{ + stage->next->point( stage->next, header ); +} + +static void twoside_end( struct prim_stage *stage ) +{ + stage->next->end( stage->next ); +} + + + +struct prim_stage *prim_twoside( struct softpipe_context *softpipe ) +{ + struct twoside_stage *twoside = CALLOC_STRUCT(twoside_stage); + + prim_alloc_tmps( &twoside->stage, 3 ); + + twoside->stage.softpipe = softpipe; + twoside->stage.next = NULL; + twoside->stage.begin = twoside_begin; + twoside->stage.point = twoside_point; + twoside->stage.line = twoside_line; + twoside->stage.tri = twoside_tri; + twoside->stage.end = twoside_end; + + twoside->lookup = softpipe->vf_attr_to_slot; + + return &twoside->stage; +} diff --git a/src/mesa/pipe/softpipe/sp_prim_unfilled.c b/src/mesa/pipe/softpipe/sp_prim_unfilled.c new file mode 100644 index 0000000000..73147337fd --- /dev/null +++ b/src/mesa/pipe/softpipe/sp_prim_unfilled.c @@ -0,0 +1,165 @@ +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/* Authors: Keith Whitwell <keith@tungstengraphics.com> + */ +#include "imports.h" + +#include "sp_context.h" +#include "sp_prim.h" + + + +struct unfilled_stage { + struct prim_stage stage; + + GLuint mode[2]; +}; + + +static INLINE struct unfilled_stage *unfilled_stage( struct prim_stage *stage ) +{ + return (struct unfilled_stage *)stage; +} + + +static void unfilled_begin( struct prim_stage *stage ) +{ + struct unfilled_stage *unfilled = unfilled_stage(stage); + + unfilled->mode[0] = stage->softpipe->setup.fill_ccw; + unfilled->mode[1] = stage->softpipe->setup.fill_cw; + + stage->next->begin( stage->next ); +} + +static void point( struct prim_stage *stage, + struct vertex_header *v0 ) +{ + struct prim_header tmp; + tmp.v[0] = v0; + stage->next->point( stage->next, &tmp ); +} + +static void line( struct prim_stage *stage, + struct vertex_header *v0, + struct vertex_header *v1 ) +{ + struct prim_header tmp; + tmp.v[0] = v0; + tmp.v[1] = v1; + stage->next->line( stage->next, &tmp ); +} + + +static void points( struct prim_stage *stage, + struct prim_header *header ) +{ + struct vertex_header *v0 = header->v[0]; + struct vertex_header *v1 = header->v[1]; + struct vertex_header *v2 = header->v[2]; + + if (v0->edgeflag) point( stage, v0 ); + if (v1->edgeflag) point( stage, v1 ); + if (v2->edgeflag) point( stage, v2 ); +} + +static void lines( struct prim_stage *stage, + struct prim_header *header ) +{ + struct vertex_header *v0 = header->v[0]; + struct vertex_header *v1 = header->v[1]; + struct vertex_header *v2 = header->v[2]; + + if (v0->edgeflag) line( stage, v0, v1 ); + if (v1->edgeflag) line( stage, v1, v2 ); + if (v2->edgeflag) line( stage, v2, v0 ); +} + + +/* Unfilled tri: + * + * Note edgeflags in the vertex struct is not sufficient as we will + * need to manipulate them when decomposing primitives??? + */ +static void unfilled_tri( struct prim_stage *stage, + struct prim_header *header ) +{ + struct unfilled_stage *unfilled = unfilled_stage(stage); + GLuint mode = unfilled->mode[header->det < 0]; + + switch (mode) { + case FILL_TRI: + stage->next->tri( stage->next, header ); + break; + + case FILL_LINE: + lines( stage, header ); + break; + + case GL_POINT: + points( stage, header ); + break; + } +} + +static void unfilled_line( struct prim_stage *stage, + struct prim_header *header ) +{ + stage->next->line( stage->next, header ); +} + + +static void unfilled_point( struct prim_stage *stage, + struct prim_header *header ) +{ + stage->next->point( stage->next, header ); +} + + +static void unfilled_end( struct prim_stage *stage ) +{ + stage->next->end( stage->next ); +} + +struct prim_stage *prim_unfilled( struct softpipe_context *softpipe ) +{ + struct unfilled_stage *unfilled = CALLOC_STRUCT(unfilled_stage); + + prim_alloc_tmps( &unfilled->stage, 0 ); + + unfilled->stage.softpipe = softpipe; + unfilled->stage.next = NULL; + unfilled->stage.tmp = NULL; + unfilled->stage.begin = unfilled_begin; + unfilled->stage.point = unfilled_point; + unfilled->stage.line = unfilled_line; + unfilled->stage.tri = unfilled_tri; + unfilled->stage.end = unfilled_end; + + return &unfilled->stage; +} diff --git a/src/mesa/pipe/softpipe/sp_state.h b/src/mesa/pipe/softpipe/sp_state.h new file mode 100644 index 0000000000..2abefc6037 --- /dev/null +++ b/src/mesa/pipe/softpipe/sp_state.h @@ -0,0 +1,61 @@ +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/* Authors: Keith Whitwell <keith@tungstengraphics.com> + */ + +#ifndef PRIM_H +#define PRIM_H + +#include "glheader.h" +#include "pipe/p_state.h" + + +void softpipe_set_clip_state( struct pipe_context *, + const struct pipe_clip_state * ); + +void softpipe_set_viewport( struct pipe_context *, + const struct pipe_viewport * ); + +void softpipe_set_setup_state( struct pipe_context *, + const struct pipe_setup_state * ); + +void softpipe_set_scissor_rect( struct pipe_context *, + const struct pipe_scissor_rect * ); + +void softpipe_set_fs_state( struct pipe_context *, + const struct pipe_fs_state * ); + +void softpipe_set_polygon_stipple( struct pipe_context *, + const struct pipe_poly_stipple * ); + +void softpipe_set_cbuf_state( struct pipe_context *, + const struct pipe_surface * ); + +void softpipe_update_derived( struct softpipe_context *softpipe ); + +#endif diff --git a/src/mesa/pipe/softpipe/sp_state_clip.c b/src/mesa/pipe/softpipe/sp_state_clip.c new file mode 100644 index 0000000000..6e83b055fb --- /dev/null +++ b/src/mesa/pipe/softpipe/sp_state_clip.c @@ -0,0 +1,69 @@ +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/* Authors: Keith Whitwell <keith@tungstengraphics.com> + */ +#include "imports.h" + +#include "sp_context.h" +#include "sp_state.h" +#include "sp_draw.h" + + + +void softpipe_set_clip_state( struct pipe_context *pipe, + const struct pipe_clip_state *clip ) +{ + struct softpipe_context *softpipe = softpipe_context(pipe); + + memcpy(&softpipe->plane[6], clip->ucp, clip->nr * sizeof(clip->ucp[0])); + + softpipe->nr_planes = 6 + clip->nr; + softpipe->dirty |= G_NEW_CLIP; +} + + + +/* Called when driver state tracker notices changes to the viewport + * matrix: + */ +void softpipe_set_viewport( struct pipe_context *pipe, + const struct pipe_viewport *viewport ) +{ + struct softpipe_context *softpipe = softpipe_context(pipe); + + memcpy(&softpipe->viewport, viewport, sizeof(viewport)); + + /* Using tnl/ and vf/ modules is temporary while getting started. + * Full pipe will have vertex shader, vertex fetch of its own. + */ + draw_set_viewport( softpipe->draw, viewport->scale, viewport->translate ); + softpipe->dirty |= G_NEW_VIEWPORT; +} + + + diff --git a/src/mesa/pipe/softpipe/sp_state_derived.c b/src/mesa/pipe/softpipe/sp_state_derived.c new file mode 100644 index 0000000000..1f7329600a --- /dev/null +++ b/src/mesa/pipe/softpipe/sp_state_derived.c @@ -0,0 +1,136 @@ +/************************************************************************** + * + * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +#include "glheader.h" +#include "macros.h" +#include "enums.h" +#include "program.h" + +#include "sp_context.h" +#include "sp_draw.h" +#include "sp_state.h" + +#define EMIT_ATTR( ATTR, FRAG_ATTR, INTERP ) \ +do { \ + slot_to_vf_attr[softpipe->nr_attrs] = ATTR; \ + softpipe->vf_attr_to_slot[ATTR] = softpipe->nr_attrs; \ + softpipe->fp_attr_to_slot[FRAG_ATTR] = softpipe->nr_attrs; \ + softpipe->interp[softpipe->nr_attrs] = INTERP; \ + softpipe->nr_attrs++; \ + attr_mask |= (1<<ATTR); \ +} while (0) + + +static GLuint frag_to_vf[FRAG_ATTRIB_MAX] = +{ + VF_ATTRIB_POS, + VF_ATTRIB_COLOR0, + VF_ATTRIB_COLOR1, + VF_ATTRIB_FOG, + VF_ATTRIB_TEX0, + VF_ATTRIB_TEX1, + VF_ATTRIB_TEX2, + VF_ATTRIB_TEX3, + VF_ATTRIB_TEX4, + VF_ATTRIB_TEX5, + VF_ATTRIB_TEX6, + VF_ATTRIB_TEX7, +}; + + +/* Derived from: fs, setup states. + */ +static void calculate_vertex_layout( struct softpipe_context *softpipe ) +{ + struct gl_fragment_program *fp = softpipe->fs.fp; + const GLuint inputsRead = fp->Base.InputsRead; + GLuint slot_to_vf_attr[VF_ATTRIB_MAX]; + GLuint attr_mask = 0; + GLuint i; + + softpipe->nr_attrs = 0; + memset(slot_to_vf_attr, 0, sizeof(slot_to_vf_attr)); + + memset(softpipe->fp_attr_to_slot, 0, sizeof(softpipe->vf_attr_to_slot)); + memset(softpipe->vf_attr_to_slot, 0, sizeof(softpipe->fp_attr_to_slot)); + + /* TODO - Figure out if we need to do perspective divide, etc. + */ + EMIT_ATTR(VF_ATTRIB_POS, FRAG_ATTRIB_WPOS, INTERP_LINEAR); + + /* Pull in the rest of the attributes. They are all in float4 + * format. Future optimizations could be to keep some attributes + * as fixed point or ubyte format. + */ + for (i = 1; i < FRAG_ATTRIB_TEX0; i++) { + if (inputsRead & (i << i)) { + EMIT_ATTR(frag_to_vf[i], i, INTERP_LINEAR); + } + } + + for (i = FRAG_ATTRIB_TEX0; i < FRAG_ATTRIB_MAX; i++) { + if (inputsRead & (i << i)) { + EMIT_ATTR(frag_to_vf[i], i, INTERP_PERSPECTIVE); + } + } + + softpipe->nr_frag_attrs = softpipe->nr_attrs; + + /* Additional attributes required for setup: Just twosided + * lighting. Edgeflag is dealt with specially by setting bits in + * the vertex header. + */ + if (softpipe->setup.light_twoside) { + if (inputsRead & FRAG_BIT_COL0) { + EMIT_ATTR(VF_ATTRIB_BFC0, FRAG_ATTRIB_MAX, 0); /* XXX: mark as discarded after setup */ + } + + if (inputsRead & FRAG_BIT_COL1) { + EMIT_ATTR(VF_ATTRIB_BFC1, FRAG_ATTRIB_MAX, 0); /* XXX: discard after setup */ + } + } + + if (attr_mask != softpipe->attr_mask) { + softpipe->attr_mask = attr_mask; + + draw_set_vertex_attributes( softpipe->draw, + slot_to_vf_attr, + softpipe->nr_attrs ); + } +} + + +/* Hopefully this will remain quite simple, otherwise need to pull in + * something like the state tracker mechanism. + */ +void softpipe_update_derived( struct softpipe_context *softpipe ) +{ + if (softpipe->dirty & (G_NEW_SETUP | G_NEW_FS)) + calculate_vertex_layout( softpipe ); + + softpipe->dirty = 0; +} diff --git a/src/mesa/pipe/softpipe/sp_state_fs.c b/src/mesa/pipe/softpipe/sp_state_fs.c new file mode 100644 index 0000000000..29f965e50e --- /dev/null +++ b/src/mesa/pipe/softpipe/sp_state_fs.c @@ -0,0 +1,50 @@ +/************************************************************************** + * + * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +#include "sp_context.h" +#include "sp_state.h" + + + +void softpipe_set_fs_state( struct pipe_context *pipe, + const struct pipe_fs_state *fs ) +{ + struct softpipe_context *softpipe = softpipe_context(pipe); + + memcpy(&softpipe->fs, fs, sizeof(*fs)); + + softpipe->dirty |= G_NEW_FS; +} + + + + + + + + + diff --git a/src/mesa/pipe/softpipe/sp_state_setup.c b/src/mesa/pipe/softpipe/sp_state_setup.c new file mode 100644 index 0000000000..7be7d7fe40 --- /dev/null +++ b/src/mesa/pipe/softpipe/sp_state_setup.c @@ -0,0 +1,122 @@ +/************************************************************************** + * + * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +#include "sp_context.h" +#include "sp_state.h" +#include "sp_prim.h" + + + + +static void validate_prim_pipe( struct softpipe_context *softpipe ) +{ + struct prim_stage *next = softpipe->prim.setup; + + /* TODO: make the current primitive part of the state and build + * shorter pipelines for lines & points. + */ + if (softpipe->setup.fill_cw != FILL_TRI || + softpipe->setup.fill_ccw != FILL_TRI) { + + softpipe->prim.unfilled->next = next; + next = softpipe->prim.unfilled; + } + + if (softpipe->setup.offset_cw || + softpipe->setup.offset_ccw) { + softpipe->prim.offset->next = next; + next = softpipe->prim.offset; + } + + if (softpipe->setup.light_twoside) { + softpipe->prim.twoside->next = next; + next = softpipe->prim.twoside; + } + + /* Always run the cull stage as we calculate determinant there + * also. Fix this.. + */ + { + softpipe->prim.cull->next = next; + next = softpipe->prim.cull; + } + + + /* Clip stage + */ + { + softpipe->prim.clip->next = next; + next = softpipe->prim.clip; + } + + /* Do software flatshading prior to clipping. XXX: should only do + * this for clipped primitives, ie it is a part of the clip + * routine. + */ + if (softpipe->setup.flatshade) { + softpipe->prim.flatshade->next = next; + next = softpipe->prim.flatshade; + } + + + softpipe->prim.first = next; +} + + + + +void softpipe_set_setup_state( struct pipe_context *pipe, + const struct pipe_setup_state *setup ) +{ + struct softpipe_context *softpipe = softpipe_context(pipe); + + memcpy( &softpipe->setup, setup, sizeof(*setup) ); + + validate_prim_pipe( softpipe ); + softpipe->dirty |= G_NEW_SETUP; +} + + + +void softpipe_set_scissor_rect( struct pipe_context *pipe, + const struct pipe_scissor_rect *scissor ) +{ + struct softpipe_context *softpipe = softpipe_context(pipe); + + memcpy( &softpipe->scissor, scissor, sizeof(*scissor) ); + softpipe->dirty |= G_NEW_SCISSOR; +} + + +void softpipe_set_polygon_stipple( struct pipe_context *pipe, + const struct pipe_poly_stipple *stipple ) +{ + struct softpipe_context *softpipe = softpipe_context(pipe); + + memcpy( &softpipe->poly_stipple, stipple, sizeof(*stipple) ); + softpipe->dirty |= G_NEW_STIPPLE; +} diff --git a/src/mesa/pipe/softpipe/sp_state_surface.c b/src/mesa/pipe/softpipe/sp_state_surface.c new file mode 100644 index 0000000000..989f2e29d8 --- /dev/null +++ b/src/mesa/pipe/softpipe/sp_state_surface.c @@ -0,0 +1,53 @@ +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/* Authors: Keith Whitwell <keith@tungstengraphics.com> + */ +#include "imports.h" + +#include "sp_context.h" +#include "sp_state.h" +#include "sp_surface.h" + + +/* This is all a total hack. + */ +void softpipe_set_cbuf_state( struct pipe_context *pipe, + const struct pipe_surface *surface ) +{ + struct softpipe_context *softpipe = softpipe_context(pipe); + + if (softpipe->cbuf_surface == NULL) { + softpipe->cbuf_surface = CALLOC_STRUCT(softpipe_surface); + softpipe->cbuf_surface->type = &gs_rgba8; + } + + softpipe->cbuf_surface->surface = *surface; + softpipe->dirty |= G_NEW_CBUF; +} + + diff --git a/src/mesa/pipe/softpipe/sp_surface.c b/src/mesa/pipe/softpipe/sp_surface.c new file mode 100644 index 0000000000..16bbacb12b --- /dev/null +++ b/src/mesa/pipe/softpipe/sp_surface.c @@ -0,0 +1,153 @@ +/************************************************************************** + * + * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +#include "sp_context.h" +#include "sp_state.h" +#include "sp_surface.h" +#include "sp_headers.h" + +static void rgba8_read_quad_f( struct softpipe_surface *gs, + GLint x, GLint y, + GLfloat (*rgba)[NUM_CHANNELS] ) +{ + GLuint i, j, k = 0; + + for (i = 0; i < 2; i++) { + for (j = 0; j < 2; j++, k++) { + GLubyte *ptr = gs->surface.ptr + (y+i) * gs->surface.stride + (x+j) * 4; + rgba[k][0] = ptr[0] * (1.0 / 255.0); + rgba[k][1] = ptr[1] * (1.0 / 255.0); + rgba[k][2] = ptr[2] * (1.0 / 255.0); + rgba[k][3] = ptr[3] * (1.0 / 255.0); + } + } +} + +static void rgba8_read_quad_f_swz( struct softpipe_surface *gs, + GLint x, GLint y, + GLfloat (*rrrr)[QUAD_SIZE] ) +{ + GLuint i, j, k = 0; + + for (i = 0; i < 2; i++) { + for (j = 0; j < 2; j++, k++) { + GLubyte *ptr = gs->surface.ptr + (y+i) * gs->surface.stride + (x+j) * 4; + rrrr[0][k] = ptr[0] * (1.0 / 255.0); + rrrr[1][k] = ptr[1] * (1.0 / 255.0); + rrrr[2][k] = ptr[2] * (1.0 / 255.0); + rrrr[3][k] = ptr[3] * (1.0 / 255.0); + } + } +} + +static void rgba8_write_quad_f( struct softpipe_surface *gs, + GLint x, GLint y, + GLfloat (*rgba)[NUM_CHANNELS] ) +{ + GLuint i, j, k = 0; + + for (i = 0; i < 2; i++) { + for (j = 0; j < 2; j++, k++) { + GLubyte *ptr = gs->surface.ptr + (y+i) * gs->surface.stride + (x+j) * 4; + ptr[0] = rgba[k][0] * 255.0; + ptr[1] = rgba[k][1] * 255.0; + ptr[2] = rgba[k][2] * 255.0; + ptr[3] = rgba[k][3] * 255.0; + } + } +} + +static void rgba8_write_quad_f_swz( struct softpipe_surface *gs, + GLint x, GLint y, + GLfloat (*rrrr)[QUAD_SIZE] ) +{ + GLuint i, j, k = 0; + + for (i = 0; i < 2; i++) { + for (j = 0; j < 2; j++, k++) { + GLubyte *ptr = gs->surface.ptr + (y+i) * gs->surface.stride + (x+j) * 4; + ptr[0] = rrrr[0][k] * 255.0; + ptr[1] = rrrr[1][k] * 255.0; + ptr[2] = rrrr[2][k] * 255.0; + ptr[3] = rrrr[3][k] * 255.0; + } + } +} + + + + +static void rgba8_read_quad_ub( struct softpipe_surface *gs, + GLint x, GLint y, + GLubyte (*rgba)[NUM_CHANNELS] ) +{ + GLuint i, j, k = 0; + + for (i = 0; i < 2; i++) { + for (j = 0; j < 2; j++, k++) { + GLubyte *ptr = gs->surface.ptr + (y+i) * gs->surface.stride + (x+j) * 4; + rgba[k][0] = ptr[0]; + rgba[k][1] = ptr[1]; + rgba[k][2] = ptr[2]; + rgba[k][3] = ptr[3]; + } + } +} + + +static void rgba8_write_quad_ub( struct softpipe_surface *gs, + GLint x, GLint y, + GLubyte (*rgba)[NUM_CHANNELS] ) +{ + GLuint i, j, k = 0; + + for (i = 0; i < 2; i++) { + for (j = 0; j < 2; j++, k++) { + GLubyte *ptr = gs->surface.ptr + (y+i) * gs->surface.stride + (x+j) * 4; + ptr[0] = rgba[k][0]; + ptr[1] = rgba[k][1]; + ptr[2] = rgba[k][2]; + ptr[3] = rgba[k][3]; + } + } +} + + + + +struct softpipe_surface_type gs_rgba8 = { + G_SURFACE_RGBA_8888, + rgba8_read_quad_f, + rgba8_read_quad_f_swz, + rgba8_read_quad_ub, + rgba8_write_quad_f, + rgba8_write_quad_f_swz, + rgba8_write_quad_ub, +}; + + + diff --git a/src/mesa/pipe/softpipe/sp_surface.h b/src/mesa/pipe/softpipe/sp_surface.h new file mode 100644 index 0000000000..08b6889257 --- /dev/null +++ b/src/mesa/pipe/softpipe/sp_surface.h @@ -0,0 +1,115 @@ +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/* Authors: Keith Whitwell <keith@tungstengraphics.com> + */ + +#ifndef G_SURFACE_H +#define G_SURFACE_H + +#include "glheader.h" +#include "sp_headers.h" + +struct softpipe_surface; + +#define G_SURFACE_RGBA_8888 0x1 + +/* Internal structs and helpers for the primitive clip/setup pipeline: + */ +struct softpipe_surface_type { + + GLuint format; + + void (*read_quad_f)( struct softpipe_surface *, + GLint x, GLint y, + GLfloat (*rgba)[NUM_CHANNELS] ); + + void (*read_quad_f_swz)( struct softpipe_surface *, + GLint x, GLint y, + GLfloat (*rrrr)[QUAD_SIZE] ); + + void (*read_quad_ub)( struct softpipe_surface *, + GLint x, GLint y, + GLubyte (*rgba)[NUM_CHANNELS] ); + + + void (*write_quad_f)( struct softpipe_surface *, + GLint x, GLint y, + GLfloat (*rgba)[NUM_CHANNELS] ); + + void (*write_quad_f_swz)( struct softpipe_surface *, + GLint x, GLint y, + GLfloat (*rrrr)[QUAD_SIZE] ); + + + void (*write_quad_ub)( struct softpipe_surface *, + GLint x, GLint y, + GLubyte (*rgba)[NUM_CHANNELS] ); + + +}; + + +struct softpipe_surface { + struct softpipe_surface_type *type; + struct pipe_surface surface; +}; + + +static INLINE void gs_read_quad_f( struct softpipe_surface *gs, + GLint x, GLint y, + GLfloat (*rgba)[NUM_CHANNELS] ) +{ + gs->type->read_quad_f(gs, x, y, rgba); +} + +static INLINE void gs_read_quad_f_swz( struct softpipe_surface *gs, + GLint x, GLint y, + GLfloat (*rrrr)[QUAD_SIZE] ) +{ + gs->type->read_quad_f_swz(gs, x, y, rrrr); +} + +static INLINE void gs_write_quad_f( struct softpipe_surface *gs, + GLint x, GLint y, + GLfloat (*rgba)[NUM_CHANNELS] ) +{ + gs->type->write_quad_f(gs, x, y, rgba); +} + +static INLINE void gs_write_quad_f_swz( struct softpipe_surface *gs, + GLint x, GLint y, + GLfloat (*rrrr)[QUAD_SIZE] ) +{ + gs->type->write_quad_f_swz(gs, x, y, rrrr); +} + +/* Like this, or hidden? + */ +struct softpipe_surface_type gs_rgba8; + +#endif diff --git a/src/mesa/pipe/softpipe/sp_tile.h b/src/mesa/pipe/softpipe/sp_tile.h new file mode 100644 index 0000000000..f4808b99d2 --- /dev/null +++ b/src/mesa/pipe/softpipe/sp_tile.h @@ -0,0 +1,42 @@ +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/* Authors: Keith Whitwell <keith@tungstengraphics.com> + */ +#ifndef G_TILE_H +#define G_TILE_H + +struct softpipe_context; +struct quad_header; + +void quad_shade( struct softpipe_context *softpipe, + struct quad_header *quad ); + +void quad_output( struct softpipe_context *softpipe, + struct quad_header *quad ); + +#endif diff --git a/src/mesa/pipe/softpipe/sp_tile_fs.c b/src/mesa/pipe/softpipe/sp_tile_fs.c new file mode 100644 index 0000000000..c145fcf089 --- /dev/null +++ b/src/mesa/pipe/softpipe/sp_tile_fs.c @@ -0,0 +1,203 @@ +/* + * Mesa 3-D graphics library + * Version: 6.5 + * + * Copyright (C) 1999-2005 Brian Paul All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN + * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +/* Vertices are just an array of floats, with all the attributes + * packed. We currently assume a layout like: + * + * attr[0][0..3] - window position + * attr[1..n][0..3] - remaining attributes. + * + * Attributes are assumed to be 4 floats wide but are packed so that + * all the enabled attributes run contiguously. + */ + +#include "glheader.h" +#include "sp_context.h" +#include "sp_headers.h" +#include "sp_tile.h" + +struct exec_machine { + const struct setup_coefficient *coef; + + GLfloat attr[FRAG_ATTRIB_MAX][4][QUAD_SIZE]; +}; + + +/** + * Compute quad's attributes values, as constants (GL_FLAT shading). + */ +static INLINE void cinterp( struct exec_machine *exec, + GLuint attrib, + GLuint i ) +{ + GLuint j; + + for (j = 0; j < QUAD_SIZE; j++) { + exec->attr[attrib][i][j] = exec->coef[attrib].a0[i]; + } +} + + +/** + * Compute quad's attribute values by linear interpolation. + * + * Push into the fp: + * + * INPUT[attr] = MAD COEF_A0[attr], COEF_DADX[attr], INPUT_WPOS.xxxx + * INPUT[attr] = MAD INPUT[attr], COEF_DADY[attr], INPUT_WPOS.yyyy + */ +static INLINE void linterp( struct exec_machine *exec, + GLuint attrib, + GLuint i ) +{ + GLuint j; + + for (j = 0; j < QUAD_SIZE; j++) { + const GLfloat x = exec->attr[FRAG_ATTRIB_WPOS][0][j]; + const GLfloat y = exec->attr[FRAG_ATTRIB_WPOS][1][j]; + exec->attr[attrib][i][j] = (exec->coef[attrib].a0[i] + + exec->coef[attrib].dadx[i] * x + + exec->coef[attrib].dady[i] * y); + } +} + + +/** + * Compute quad's attribute values by linear interpolation with + * perspective correction. + * + * Push into the fp: + * + * INPUT[attr] = MAD COEF_A0[attr], COEF_DADX[attr], INPUT_WPOS.xxxx + * INPUT[attr] = MAD INPUT[attr], COEF_DADY[attr], INPUT_WPOS.yyyy + * INPUT[attr] = MUL INPUT[attr], INPUT_WPOS.wwww + * + * (Or should that be 1/w ???) + */ +static INLINE void pinterp( struct exec_machine *exec, + GLuint attrib, + GLuint i ) +{ + GLuint j; + + for (j = 0; j < QUAD_SIZE; j++) { + const GLfloat x = exec->attr[FRAG_ATTRIB_WPOS][0][j]; + const GLfloat y = exec->attr[FRAG_ATTRIB_WPOS][1][j]; + const GLfloat invW = exec->attr[FRAG_ATTRIB_WPOS][3][j]; + exec->attr[attrib][i][j] = ((exec->coef[attrib].a0[i] + + exec->coef[attrib].dadx[i] * x + + exec->coef[attrib].dady[i] * y) * invW); + } +} + + + +/* This should be done by the fragment shader execution unit (code + * generated from the decl instructions). Do it here for now. + */ +void quad_shade( struct softpipe_context *softpipe, + struct quad_header *quad ) +{ + struct exec_machine exec; + GLfloat fx = quad->x0; + GLfloat fy = quad->y0; + GLuint i, j; + + exec.coef = quad->coef; + + /* Position: + */ + exec.attr[FRAG_ATTRIB_WPOS][0][0] = fx; + exec.attr[FRAG_ATTRIB_WPOS][0][1] = fx + 1.0; + exec.attr[FRAG_ATTRIB_WPOS][0][2] = fx; + exec.attr[FRAG_ATTRIB_WPOS][0][3] = fx + 1.0; + + exec.attr[FRAG_ATTRIB_WPOS][1][0] = fy; + exec.attr[FRAG_ATTRIB_WPOS][1][1] = fy; + exec.attr[FRAG_ATTRIB_WPOS][1][2] = fy + 1.0; + exec.attr[FRAG_ATTRIB_WPOS][1][3] = fy + 1.0; + + /* Z and W are done by linear interpolation: + * XXX we'll probably have to use integers for Z + */ + if (softpipe->need_z) { + linterp(&exec, 0, 2); + } + + if (softpipe->need_w) { + linterp(&exec, 0, 3); +// invert(&exec, 0, 3); + } + + /* Interpolate all the remaining attributes. This will get pushed + * into the fragment program's responsibilities at some point. + */ + for (i = 1; i < quad->nr_attrs; i++) { +#if 1 + for (j = 0; j < NUM_CHANNELS; j++) + linterp(&exec, i, j); +#else + switch (quad->interp[i]) { + case INTERP_CONSTANT: + for (j = 0; j < NUM_CHANNELS; j++) + cinterp(&exec, i, j); + break; + + case INTERP_LINEAR: + for (j = 0; j < NUM_CHANNELS; j++) + linterp(&exec, i, j); + break; + + case INTERP_PERSPECTIVE: + for (j = 0; j < NUM_CHANNELS; j++) + pinterp(&exec, i, j); + break; + } +#endif + } + +#if 0 + softpipe->run_fs( tri->fp, quad, &tri->outputs ); +#else + { + GLuint attr = softpipe->fp_attr_to_slot[FRAG_ATTRIB_COL0]; + assert(attr); + + memcpy(quad->outputs.color, + exec.attr[attr], + sizeof(quad->outputs.color)); + } +#endif + + + if (quad->mask) + quad_output( softpipe, quad ); +} + + + + + + + diff --git a/src/mesa/pipe/softpipe/sp_tile_output.c b/src/mesa/pipe/softpipe/sp_tile_output.c new file mode 100644 index 0000000000..b1eb9e8c9f --- /dev/null +++ b/src/mesa/pipe/softpipe/sp_tile_output.c @@ -0,0 +1,92 @@ +/* + * Mesa 3-D graphics library + * Version: 6.5 + * + * Copyright (C) 1999-2005 Brian Paul All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN + * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +/* Vertices are just an array of floats, with all the attributes + * packed. We currently assume a layout like: + * + * attr[0][0..3] - window position + * attr[1..n][0..3] - remaining attributes. + * + * Attributes are assumed to be 4 floats wide but are packed so that + * all the enabled attributes run contiguously. + */ + +#include "glheader.h" +#include "sp_context.h" +#include "sp_headers.h" +#include "sp_surface.h" +#include "sp_tile.h" + + +static void mask_copy( GLfloat (*dest)[4], + GLfloat (*src)[4], + GLuint mask ) +{ + GLuint i, j; + + for (i = 0; i < 4; i++) { + if (mask & (1<<i)) { + for (j = 0; j < 4; j++) { + dest[j][i] = src[j][i]; + } + } + } +} + + +/* Write to the output, taking mask into account. + * + * Note that surfaces support only full quad reads and writes. + */ +void quad_output( struct softpipe_context *softpipe, + struct quad_header *quad ) +{ + + if (quad->mask != MASK_ALL) + { + GLfloat tmp[4][QUAD_SIZE]; + + /* Yes, we'll probably have a masked write as well, but this is + * how blend will be done at least. + */ + gs_read_quad_f_swz( softpipe->cbuf_surface, + quad->x0, + quad->y0, + tmp ); + + mask_copy( tmp, quad->outputs.color, quad->mask ); + + gs_write_quad_f_swz( softpipe->cbuf_surface, + quad->x0, + quad->y0, + tmp ); + } + else + { + gs_write_quad_f_swz( softpipe->cbuf_surface, + quad->x0, + quad->y0, + quad->outputs.color ); + } +} |