diff options
Diffstat (limited to 'src/gallium/auxiliary/draw/draw_pt_pipeline.c')
| -rw-r--r-- | src/gallium/auxiliary/draw/draw_pt_pipeline.c | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/draw/draw_pt_pipeline.c b/src/gallium/auxiliary/draw/draw_pt_pipeline.c new file mode 100644 index 00000000000..6e46d3925f0 --- /dev/null +++ b/src/gallium/auxiliary/draw/draw_pt_pipeline.c @@ -0,0 +1,162 @@ +/************************************************************************** + * + * 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 <[email protected]> + */ + +#include "pipe/p_util.h" +#include "draw/draw_context.h" +#include "draw/draw_private.h" +#include "draw/draw_vertex.h" +#include "draw/draw_pt.h" + + +/** + * Add a point to the primitive queue. + * \param i0 index into user's vertex arrays + */ +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 ); +} + + +/** + * Add a line to the primitive queue. + * \param i0 index into user's vertex arrays + * \param i1 index into user's vertex arrays + */ +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 ); +} + +/** + * Add a triangle to the primitive queue. + */ +static void do_triangle( struct draw_context *draw, + char *v0, + char *v1, + char *v2 ) +{ + struct prim_header prim; + +// _mesa_printf("tri %d %d %d\n", i0, i1, i2); + prim.reset_line_stipple = 1; + prim.edgeflags = ~0; + prim.pad = 0; + prim.v[0] = (struct vertex_header *)v0; + prim.v[1] = (struct vertex_header *)v1; + prim.v[2] = (struct vertex_header *)v2; + + draw->pipeline.first->tri( draw->pipeline.first, &prim ); +} + + + +void draw_pt_reset_vertex_ids( struct draw_context *draw ) +{ + unsigned i; + char *verts = draw->pt.pipeline.verts; + unsigned stride = draw->pt.pipeline.vertex_stride; + + for (i = 0; i < draw->pt.pipeline.vertex_count; i++) { + ((struct vertex_header *)verts)->vertex_id = UNDEFINED_VERTEX_ID; + verts += stride; + } +} + + +/* 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_pt_run_pipeline( struct draw_context *draw, + unsigned prim, + char *verts, + unsigned stride, + unsigned vertex_count, + const ushort *elts, + unsigned count ) +{ + unsigned i; + + draw->pt.pipeline.verts = verts; + draw->pt.pipeline.vertex_stride = stride; + draw->pt.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->pt.pipeline.verts = NULL; + draw->pt.pipeline.vertex_count = 0; +} + |