diff options
Diffstat (limited to 'src/gallium/auxiliary/draw/draw_pipe.c')
-rw-r--r-- | src/gallium/auxiliary/draw/draw_pipe.c | 223 |
1 files changed, 223 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/draw/draw_pipe.c b/src/gallium/auxiliary/draw/draw_pipe.c new file mode 100644 index 0000000000..d0890203a5 --- /dev/null +++ b/src/gallium/auxiliary/draw/draw_pipe.c @@ -0,0 +1,223 @@ +/************************************************************************** + * + * 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 "pipe/p_util.h" +#include "draw/draw_private.h" +#include "draw/draw_pipe.h" + + + +boolean draw_pipeline_init( struct draw_context *draw ) +{ + /* create pipeline stages */ + draw->pipeline.wide_line = draw_wide_line_stage( draw ); + draw->pipeline.wide_point = draw_wide_point_stage( draw ); + draw->pipeline.stipple = draw_stipple_stage( draw ); + draw->pipeline.unfilled = draw_unfilled_stage( draw ); + draw->pipeline.twoside = draw_twoside_stage( draw ); + draw->pipeline.offset = draw_offset_stage( draw ); + draw->pipeline.clip = draw_clip_stage( draw ); + draw->pipeline.flatshade = draw_flatshade_stage( draw ); + draw->pipeline.cull = draw_cull_stage( draw ); + draw->pipeline.validate = draw_validate_stage( draw ); + draw->pipeline.first = draw->pipeline.validate; + + if (!draw->pipeline.wide_line || + !draw->pipeline.wide_point || + !draw->pipeline.stipple || + !draw->pipeline.unfilled || + !draw->pipeline.twoside || + !draw->pipeline.offset || + !draw->pipeline.clip || + !draw->pipeline.flatshade || + !draw->pipeline.cull || + !draw->pipeline.validate) + return FALSE; + + /* these defaults are oriented toward the needs of softpipe */ + draw->pipeline.wide_point_threshold = 1000000.0; /* infinity */ + draw->pipeline.wide_line_threshold = 1.0; + draw->pipeline.line_stipple = TRUE; + draw->pipeline.point_sprite = TRUE; + + return TRUE; +} + + +void draw_pipeline_destroy( struct draw_context *draw ) +{ + if (draw->pipeline.wide_line) + draw->pipeline.wide_line->destroy( draw->pipeline.wide_line ); + if (draw->pipeline.wide_point) + draw->pipeline.wide_point->destroy( draw->pipeline.wide_point ); + if (draw->pipeline.stipple) + draw->pipeline.stipple->destroy( draw->pipeline.stipple ); + if (draw->pipeline.unfilled) + draw->pipeline.unfilled->destroy( draw->pipeline.unfilled ); + if (draw->pipeline.twoside) + draw->pipeline.twoside->destroy( draw->pipeline.twoside ); + if (draw->pipeline.offset) + draw->pipeline.offset->destroy( draw->pipeline.offset ); + if (draw->pipeline.clip) + draw->pipeline.clip->destroy( draw->pipeline.clip ); + if (draw->pipeline.flatshade) + draw->pipeline.flatshade->destroy( draw->pipeline.flatshade ); + if (draw->pipeline.cull) + draw->pipeline.cull->destroy( draw->pipeline.cull ); + if (draw->pipeline.validate) + draw->pipeline.validate->destroy( draw->pipeline.validate ); + if (draw->pipeline.aaline) + draw->pipeline.aaline->destroy( draw->pipeline.aaline ); + if (draw->pipeline.aapoint) + draw->pipeline.aapoint->destroy( draw->pipeline.aapoint ); + if (draw->pipeline.pstipple) + draw->pipeline.pstipple->destroy( draw->pipeline.pstipple ); + if (draw->pipeline.rasterize) + draw->pipeline.rasterize->destroy( draw->pipeline.rasterize ); +} + + + + + + + +static void do_point( struct draw_context *draw, + const char *v0 ) +{ + struct prim_header prim; + + prim.reset_line_stipple = 0; + prim.edgeflags = 1; + prim.pad = 0; + prim.v[0] = (struct vertex_header *)v0; + + draw->pipeline.first->point( draw->pipeline.first, &prim ); +} + + +static void do_line( struct draw_context *draw, + const char *v0, + const char *v1 ) +{ + struct prim_header prim; + + prim.reset_line_stipple = 1; /* fixme */ + prim.edgeflags = 1; + prim.pad = 0; + prim.v[0] = (struct vertex_header *)v0; + prim.v[1] = (struct vertex_header *)v1; + + draw->pipeline.first->line( draw->pipeline.first, &prim ); +} + + +static void do_triangle( struct draw_context *draw, + char *v0, + char *v1, + char *v2 ) +{ + struct prim_header prim; + + prim.v[0] = (struct vertex_header *)v0; + prim.v[1] = (struct vertex_header *)v1; + prim.v[2] = (struct vertex_header *)v2; + prim.reset_line_stipple = 1; + prim.edgeflags = ((prim.v[0]->edgeflag) | + (prim.v[1]->edgeflag << 1) | + (prim.v[2]->edgeflag << 2)); + prim.pad = 0; + + draw->pipeline.first->tri( draw->pipeline.first, &prim ); +} + + + + +/* Code to run the pipeline on a fairly arbitary collection of vertices. + * + * Vertex headers must be pre-initialized with the + * UNDEFINED_VERTEX_ID, this code will cause that id to become + * overwritten, so it may have to be reset if there is the intention + * to reuse the vertices. + * + * This code provides a callback to reset the vertex id's which the + * draw_vbuf.c code uses when it has to perform a flush. + */ +void draw_pipeline_run( struct draw_context *draw, + unsigned prim, + struct vertex_header *vertices, + unsigned vertex_count, + unsigned stride, + const ushort *elts, + unsigned count ) +{ + char *verts = (char *)vertices; + unsigned i; + + draw->pipeline.verts = verts; + draw->pipeline.vertex_stride = stride; + draw->pipeline.vertex_count = vertex_count; + + switch (prim) { + case PIPE_PRIM_POINTS: + for (i = 0; i < count; i++) + do_point( draw, + verts + stride * elts[i] ); + break; + case PIPE_PRIM_LINES: + for (i = 0; i+1 < count; i += 2) + do_line( draw, + verts + stride * elts[i+0], + verts + stride * elts[i+1]); + break; + case PIPE_PRIM_TRIANGLES: + for (i = 0; i+2 < count; i += 3) + do_triangle( draw, + verts + stride * elts[i+0], + verts + stride * elts[i+1], + verts + stride * elts[i+2]); + break; + } + + draw->pipeline.verts = NULL; + draw->pipeline.vertex_count = 0; +} + + + +void draw_pipeline_flush( struct draw_context *draw, + unsigned flags ) +{ + draw->pipeline.first->flush( draw->pipeline.first, flags ); + draw->pipeline.first = draw->pipeline.validate; +} |