From 8e4a95a93d15a6707a29454cd47e10b08314cda2 Mon Sep 17 00:00:00 2001 From: Keith Whitwell Date: Thu, 24 May 2007 10:41:34 +0100 Subject: First version of the softpipe rasterizer. This will flesh out to hopefully acheive 3 things: - New software rasterizer for mesa - New driver model for mesa & dri with much smaller drivers - The basis for the cell driver. It's got a long way to go yet, but will at least run trivial/tri.c. --- src/mesa/softpipe/generic/g_prim_flatshade.c | 149 +++++++++++++++++++++++++++ 1 file changed, 149 insertions(+) create mode 100644 src/mesa/softpipe/generic/g_prim_flatshade.c (limited to 'src/mesa/softpipe/generic/g_prim_flatshade.c') diff --git a/src/mesa/softpipe/generic/g_prim_flatshade.c b/src/mesa/softpipe/generic/g_prim_flatshade.c new file mode 100644 index 0000000000..1974a64fa8 --- /dev/null +++ b/src/mesa/softpipe/generic/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 + */ +#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; +} + + -- cgit v1.2.3