src/mesa/drivers/dri/i965/gen6_sampler_state.c

   1 /*
   2  * Copyright © 2010 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  * Authors:
  24  *    Eric Anholt <eric@anholt.net>
  25  *
  26  */
  27
  28 #include "brw_context.h"
  29 #include "brw_state.h"
  30 #include "brw_defines.h"
  31 #include "brw_util.h"
  32 #include "intel_batchbuffer.h"
  33 #include "main/macros.h"
  34 #include "main/enums.h"
  35
  36 static void
  37 upload_sampler_state_pointers(struct brw_context *brw)
  38 {
  39    struct intel_context *intel = &brw->intel;
  40
  41    BEGIN_BATCH(4);
  42    OUT_BATCH(CMD_3D_SAMPLER_STATE_POINTERS << 16 |
  43              VS_SAMPLER_STATE_CHANGE |
  44              GS_SAMPLER_STATE_CHANGE |
  45              PS_SAMPLER_STATE_CHANGE |
  46              (4 - 2));
  47    OUT_BATCH(0); /* VS */
  48    OUT_BATCH(0); /* GS */
  49    if (brw->wm.sampler_bo)
  50       OUT_RELOC(brw->wm.sampler_bo, I915_GEM_DOMAIN_INSTRUCTION, 0, 0);
  51    else
  52       OUT_BATCH(0);
  53
  54    ADVANCE_BATCH();
  55
  56    intel_batchbuffer_emit_mi_flush(intel->batch);
  57 }
  58
  59
  60 static void
  61 prepare_sampler_state_pointers(struct brw_context *brw)
  62 {
  63    brw_add_validated_bo(brw, brw->wm.sampler_bo);
  64 }
  65
  66 const struct brw_tracked_state gen6_sampler_state = {
  67    .dirty = {
  68       .mesa = 0,
  69       .brw = BRW_NEW_BATCH,
  70       .cache = CACHE_NEW_SAMPLER
  71    },
  72    .prepare = prepare_sampler_state_pointers,
  73    .emit = upload_sampler_state_pointers,
  74 };