src/mesa/drivers/dri/i965/gen6_gs_state.c

   1 /*
   2  * Copyright © 2009 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 "intel_batchbuffer.h"
  32
  33 static void
  34 upload_gs_state(struct brw_context *brw)
  35 {
  36    struct intel_context *intel = &brw->intel;
  37
  38    /* Disable all the constant buffers. */
  39    BEGIN_BATCH(5);
  40    OUT_BATCH(_3DSTATE_CONSTANT_GS << 16 | (5 - 2));
  41    OUT_BATCH(0);
  42    OUT_BATCH(0);
  43    OUT_BATCH(0);
  44    OUT_BATCH(0);
  45    ADVANCE_BATCH();
  46
  47    // GS should never be used on Gen6.  Disable it.
  48    assert(!brw->gs.prog_active);
  49    BEGIN_BATCH(7);
  50    OUT_BATCH(_3DSTATE_GS << 16 | (7 - 2));
  51    OUT_BATCH(0); /* prog_bo */
  52    OUT_BATCH((0 << GEN6_GS_SAMPLER_COUNT_SHIFT) |
  53              (0 << GEN6_GS_BINDING_TABLE_ENTRY_COUNT_SHIFT));
  54    OUT_BATCH(0); /* scratch space base offset */
  55    OUT_BATCH((1 << GEN6_GS_DISPATCH_START_GRF_SHIFT) |
  56              (0 << GEN6_GS_URB_READ_LENGTH_SHIFT) |
  57              (0 << GEN6_GS_URB_ENTRY_READ_OFFSET_SHIFT));
  58    OUT_BATCH((0 << GEN6_GS_MAX_THREADS_SHIFT) |
  59              GEN6_GS_STATISTICS_ENABLE |
  60              GEN6_GS_RENDERING_ENABLE);
  61    OUT_BATCH(0);
  62    ADVANCE_BATCH();
  63 }
  64
  65 const struct brw_tracked_state gen6_gs_state = {
  66    .dirty = {
  67       .mesa  = _NEW_TRANSFORM,
  68       .brw   = (BRW_NEW_URB_FENCE |
  69                 BRW_NEW_CONTEXT),
  70       .cache = CACHE_NEW_GS_PROG
  71    },
  72    .emit = upload_gs_state,
  73 };