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1 /*
2  * Copyright © 2012 Intel Corporation
3  *
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:
10  *
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
13  * Software.
14  *
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
21  * IN THE SOFTWARE.
22  */
23 
24 #include "intel_batchbuffer.h"
25 
26 #include "brw_context.h"
27 #include "brw_defines.h"
28 #include "brw_multisample_state.h"
29 
30 /**
31  * 3DSTATE_SAMPLE_PATTERN
32  */
33 void
gen8_emit_3dstate_sample_pattern(struct brw_context * brw)34 gen8_emit_3dstate_sample_pattern(struct brw_context *brw)
35 {
36    BEGIN_BATCH(9);
37    OUT_BATCH(_3DSTATE_SAMPLE_PATTERN << 16 | (9 - 2));
38 
39    /* 16x MSAA */
40    OUT_BATCH(brw_multisample_positions_16x[0]); /* positions  3,  2,  1,  0 */
41    OUT_BATCH(brw_multisample_positions_16x[1]); /* positions  7,  6,  5,  4 */
42    OUT_BATCH(brw_multisample_positions_16x[2]); /* positions 11, 10,  9,  8 */
43    OUT_BATCH(brw_multisample_positions_16x[3]); /* positions 15, 14, 13, 12 */
44 
45    /* 8x MSAA */
46    OUT_BATCH(brw_multisample_positions_8x[1]); /* sample positions 7654 */
47    OUT_BATCH(brw_multisample_positions_8x[0]); /* sample positions 3210 */
48 
49    /* 4x MSAA */
50    OUT_BATCH(brw_multisample_positions_4x);
51 
52    /* 1x and 2x MSAA */
53    OUT_BATCH(brw_multisample_positions_1x_2x);
54    ADVANCE_BATCH();
55 }
56