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>
34 #include "st_context.h"
35 #include "pipe/p_context.h"
38 #include "cso_cache/cso_context.h"
41 /* Second state atom for user clip planes:
43 static void update_clip( struct st_context
*st
)
45 struct pipe_clip_state clip
;
48 memset(&clip
, 0, sizeof(clip
));
50 for (i
= 0; i
< PIPE_MAX_CLIP_PLANES
; i
++) {
51 if (st
->ctx
->Transform
.ClipPlanesEnabled
& (1 << i
)) {
52 memcpy(clip
.ucp
[clip
.nr
],
53 st
->ctx
->Transform
._ClipUserPlane
[i
],
59 clip
.depth_clamp
= st
->ctx
->Transform
.DepthClamp
!= GL_FALSE
;
61 if (memcmp(&clip
, &st
->state
.clip
, sizeof(clip
)) != 0) {
62 st
->state
.clip
= clip
;
63 cso_set_clip(st
->cso_context
, &clip
);
68 const struct st_tracked_state st_update_clip
= {
69 "st_update_clip", /* name */
71 (_NEW_TRANSFORM
), /* mesa */
74 update_clip
/* update */