src/mesa/drivers/dri/i965/gen8_multisample_state.c

   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
  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 }