2 * Copyright © 2009 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
24 * Eric Anholt <eric@anholt.net>
28 #include "brw_context.h"
29 #include "brw_state.h"
30 #include "brw_defines.h"
31 #include "intel_batchbuffer.h"
34 upload_clip_state(struct brw_context
*brw
)
36 struct intel_context
*intel
= &brw
->intel
;
37 struct gl_context
*ctx
= &intel
->ctx
;
38 uint32_t depth_clamp
= 0;
41 if (!ctx
->Transform
.DepthClamp
)
42 depth_clamp
= GEN6_CLIP_Z_TEST
;
44 if (ctx
->Light
.ProvokingVertex
== GL_FIRST_VERTEX_CONVENTION
) {
48 (2 << GEN6_CLIP_TRI_PROVOKE_SHIFT
) |
49 (2 << GEN6_CLIP_TRIFAN_PROVOKE_SHIFT
) |
50 (1 << GEN6_CLIP_LINE_PROVOKE_SHIFT
);
54 OUT_BATCH(CMD_3D_CLIP_STATE
<< 16 | (4 - 2));
55 OUT_BATCH(GEN6_CLIP_STATISTICS_ENABLE
);
56 OUT_BATCH(GEN6_CLIP_ENABLE
|
58 GEN6_CLIP_MODE_NORMAL
|
62 OUT_BATCH(GEN6_CLIP_FORCE_ZERO_RTAINDEX
);
66 const struct brw_tracked_state gen6_clip_state
= {
68 .mesa
= _NEW_TRANSFORM
,
69 .brw
= BRW_NEW_CONTEXT
,
72 .emit
= upload_clip_state
,