1 /**************************************************************************
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
30 * Keith Whitwell <keith@tungstengraphics.com>
33 #include "util/u_memory.h"
34 #include "draw/draw_private.h"
35 #include "draw/draw_pipe.h"
40 draw_pipe_passthrough_point(struct draw_stage *stage, struct prim_header *header)
42 stage->next->point(stage->next, header);
46 draw_pipe_passthrough_line(struct draw_stage *stage, struct prim_header *header)
48 stage->next->line(stage->next, header);
52 draw_pipe_passthrough_tri(struct draw_stage *stage, struct prim_header *header)
54 stage->next->tri(stage->next, header);
61 /* This is only used for temporary verts.
63 #define MAX_VERTEX_SIZE ((2 + PIPE_MAX_SHADER_OUTPUTS) * 4 * sizeof(float))
67 * Allocate space for temporary post-transform vertices, such as for clipping.
69 boolean draw_alloc_temp_verts( struct draw_stage *stage, unsigned nr )
79 ubyte *store = (ubyte *) MALLOC( MAX_VERTEX_SIZE * nr );
84 stage->tmp = (struct vertex_header **) MALLOC( sizeof(struct vertex_header *) * nr );
85 if (stage->tmp == NULL) {
90 for (i = 0; i < nr; i++)
91 stage->tmp[i] = (struct vertex_header *)(store + i * MAX_VERTEX_SIZE);
98 void draw_free_temp_verts( struct draw_stage *stage )
101 FREE( stage->tmp[0] );
108 /* Reset vertex ids. This is basically a type of flush.
110 * Called only from draw_pipe_vbuf.c
112 void draw_reset_vertex_ids(struct draw_context *draw)
114 struct draw_stage *stage = draw->pipeline.first;
119 for (i = 0; i < stage->nr_tmps; i++)
120 stage->tmp[i]->vertex_id = UNDEFINED_VERTEX_ID;
125 if (draw->pipeline.verts)
128 char *verts = draw->pipeline.verts;
129 unsigned stride = draw->pipeline.vertex_stride;
131 for (i = 0; i < draw->pipeline.vertex_count; i++) {
132 ((struct vertex_header *)verts)->vertex_id = UNDEFINED_VERTEX_ID;