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 "pipe/p_util.h"
34 #include "draw/draw_context.h"
35 #include "draw/draw_private.h"
36 #include "draw/draw_pt.h"
38 void draw_pt_split_prim(unsigned prim
, unsigned *first
, unsigned *incr
)
41 case PIPE_PRIM_POINTS
:
49 case PIPE_PRIM_LINE_STRIP
:
50 case PIPE_PRIM_LINE_LOOP
:
54 case PIPE_PRIM_TRIANGLES
:
58 case PIPE_PRIM_TRIANGLE_STRIP
:
59 case PIPE_PRIM_TRIANGLE_FAN
:
60 case PIPE_PRIM_POLYGON
:
68 case PIPE_PRIM_QUAD_STRIP
:
75 *incr
= 1; /* set to one so that count % incr works */
81 unsigned draw_pt_reduced_prim(unsigned prim
)
84 case PIPE_PRIM_POINTS
:
85 return PIPE_PRIM_POINTS
;
87 case PIPE_PRIM_LINE_STRIP
:
88 case PIPE_PRIM_LINE_LOOP
:
89 return PIPE_PRIM_LINES
;
90 case PIPE_PRIM_TRIANGLES
:
91 case PIPE_PRIM_TRIANGLE_STRIP
:
92 case PIPE_PRIM_TRIANGLE_FAN
:
93 case PIPE_PRIM_POLYGON
:
95 case PIPE_PRIM_QUAD_STRIP
:
96 return PIPE_PRIM_TRIANGLES
;
99 return PIPE_PRIM_POINTS
;