diff options
author | Brian <brian.paul@tungstengraphics.com> | 2008-01-21 15:29:54 -0700 |
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committer | Brian <brian.paul@tungstengraphics.com> | 2008-01-21 15:29:54 -0700 |
commit | be92796eb9b0ef35ad84c59ad183863ed2dbe002 (patch) | |
tree | 26a70c3842e35dbba0f8edd61ed0031611601329 /src/mesa/pipe/draw | |
parent | ea3a2b440207f319438fe76d9a451e78f0e575d4 (diff) |
gallium: prototype draw_linestipple.c replaced by draw_stipple.c
Diffstat (limited to 'src/mesa/pipe/draw')
-rw-r--r-- | src/mesa/pipe/draw/draw_linestipple.c | 272 |
1 files changed, 0 insertions, 272 deletions
diff --git a/src/mesa/pipe/draw/draw_linestipple.c b/src/mesa/pipe/draw/draw_linestipple.c deleted file mode 100644 index d7fe1071f0..0000000000 --- a/src/mesa/pipe/draw/draw_linestipple.c +++ /dev/null @@ -1,272 +0,0 @@ -/************************************************************************** - * - * 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> - */ - -/* Implement line stipple by cutting lines up into smaller lines. - * There are hundreds of ways to implement line stipple, this is one - * choice that should work in all situations, requires no state - * manipulations, but with a penalty in terms of large amounts of - * generated geometry. - */ - -#include "imports.h" -#include "macros.h" - -#define CLIP_PRIVATE -#include "clip/clip_context.h" - -#define CLIP_PIPE_PRIVATE -#include "clip/clip_pipe.h" - - - -struct stipple_stage { - struct clip_pipe_stage stage; - - GLuint hw_data_offset; - - GLfloat counter; - GLuint pattern; - GLuint factor; -}; - - - - -static INLINE struct stipple_stage *stipple_stage( struct clip_pipe_stage *stage ) -{ - return (struct stipple_stage *)stage; -} - - - - -static void interp_attr( const struct vf_attr *a, - GLubyte *vdst, - GLfloat t, - const GLubyte *vin, - const GLubyte *vout ) -{ - GLuint offset = a->vertoffset; - GLfloat fin[4], fout[4], fdst[4]; - - a->extract( a, fin, vin + offset ); - a->extract( a, fout, vout + offset ); - - 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] ); - - a->insert[4-1]( a, vdst + offset, fdst ); -} - - - - -/* Weird screen-space interpolation?? Otherwise do something special - * with pos.w or fix vertices to always have clip coords available. - */ -static void screen_interp( struct vertex_fetch *vf, - struct vertex_header *dst, - GLfloat t, - const struct vertex_header *out, - const struct vertex_header *in ) -{ - GLubyte *vdst = (GLubyte *)dst; - const GLubyte *vin = (const GLubyte *)in; - const GLubyte *vout = (const GLubyte *)out; - - const struct vf_attr *a = vf->attr; - const GLuint attr_count = vf->attr_count; - GLuint j; - - /* Vertex header. - */ - { - assert(a[0].attrib == VF_ATTRIB_VERTEX_HEADER); - dst->clipmask = 0; - dst->edgeflag = 0; - dst->pad = 0; - dst->index = 0xffff; - } - - - /* Other attributes - */ - for (j = 1; j < attr_count; j++) { - interp_attr(&a[j], vdst, t, vin, vout); - } -} - - - -/* Clip a line against the viewport and user clip planes. - */ -static void draw_line_segment( struct clip_pipe_stage *stage, - struct prim_header *header, - GLfloat t0, - GLfloat t1 ) -{ - struct vertex_fetch *vf = stage->pipe->draw->vb.vf; - struct vertex_header *v0 = header->v[0]; - struct vertex_header *v1 = header->v[1]; - - struct prim_header newprim = *header; - header = &newprim; - - _mesa_printf("%s %f %f\n", __FUNCTION__, t0, t1); - - if (t0 > 0.0) { - screen_interp( vf, stage->tmp[0], t0, v0, v1 ); - header->v[0] = stage->tmp[0]; - } - - if (t1 < 1.0) { - screen_interp( vf, stage->tmp[1], t1, v0, v1 ); - header->v[1] = stage->tmp[1]; - } - - stage->next->line( stage->next, header ); -} - - - -/* XXX: don't really want to iterate like this. - */ -static INLINE unsigned -stipple_test(int counter, ushort pattern, int factor) -{ - int b = (counter / factor) & 0xf; - return (1 << b) & pattern; -} - - - -/* XXX: Need to have precalculated flatshading already. - */ -static void stipple_line( struct clip_pipe_stage *stage, - struct prim_header *header ) -{ - struct stipple_stage *stipple = stipple_stage(stage); - GLuint hw_data_offset = stipple->hw_data_offset; - const GLfloat *pos0 = (GLfloat *)&(header->v[0]->data[hw_data_offset]); - const GLfloat *pos1 = (GLfloat *)&(header->v[1]->data[hw_data_offset]); - GLfloat start = 0; - int state = 0; - - GLfloat x0 = (GLfloat)pos0[0]; - GLfloat x1 = (GLfloat)pos1[0]; - GLfloat y0 = (GLfloat)pos0[1]; - GLfloat y1 = (GLfloat)pos1[1]; - - GLfloat dx = x0 > x1 ? x0 - x1 : x1 - x0; - GLfloat dy = y0 > y1 ? y0 - y1 : y1 - y0; - - GLfloat length = MAX2(dx, dy); - GLint i; - - if (header->reset_line_stipple) - stipple->counter = 0; - - /* XXX: iterating like this is lame - */ - for (i = 0; i < length; i++) { - int result = !!stipple_test( stipple->counter+i, stipple->pattern, stipple->factor ); -// _mesa_printf("%d %f %d\n", i, length, result); - if (result != state) { - if (state) { - if (start != i) - draw_line_segment( stage, header, start / length, i / length ); - } - else { - start = i; - } - state = result; - } - } - - if (state && start < length) - draw_line_segment( stage, header, start / length, 1.0 ); - - stipple->counter += length; -} - - - -static void stipple_begin( struct clip_pipe_stage *stage ) -{ - struct stipple_stage *stipple = stipple_stage(stage); - struct clip_context *draw = stage->pipe->draw; - - if (stage->pipe->draw->vb_state.clipped_prims) - stipple->hw_data_offset = 16; - else - stipple->hw_data_offset = 0; - - stipple->stage.tri = clip_passthrough_tri; - stipple->stage.point = clip_passthrough_point; - - stipple->stage.line = stipple_line; - stipple->factor = draw->state.line_stipple_factor + 1; - stipple->pattern = draw->state.line_stipple_pattern; - - stage->next->begin( stage->next ); -} - - -static void stipple_end( struct clip_pipe_stage *stage ) -{ - stage->next->end( stage->next ); -} - - -static void stipple_destroy( struct clip_pipe_stage *stage ) -{ - FREE( stage ); -} - - -struct clip_pipe_stage *clip_pipe_stipple( struct clip_pipeline *pipe ) -{ - struct stipple_stage *stipple = CALLOC_STRUCT(stipple_stage); - - clip_pipe_alloc_tmps( &stipple->stage, 4 ); - - stipple->stage.pipe = pipe; - stipple->stage.next = NULL; - stipple->stage.begin = stipple_begin; - stipple->stage.point = clip_passthrough_point; - stipple->stage.line = stipple_line; - stipple->stage.tri = clip_passthrough_tri; - stipple->stage.end = stipple_end; - stipple->stage.destroy = stipple_destroy; - - return &stipple->stage; -} |