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    if (brw->gs.prog_active) {
  48       BEGIN_BATCH(7);
  49       OUT_BATCH(_3DSTATE_GS << 16 | (7 - 2));
  50       OUT_BATCH(brw->gs.prog_offset);
  51       OUT_BATCH(GEN6_GS_SPF_MODE | GEN6_GS_VECTOR_MASK_ENABLE);
  52       OUT_BATCH(0); /* no scratch space */
  53       OUT_BATCH((2 << GEN6_GS_DISPATCH_START_GRF_SHIFT) |
  54                 (brw->gs.prog_data->urb_read_length << GEN6_GS_URB_READ_LENGTH_SHIFT));
  55       OUT_BATCH(((brw->max_gs_threads - 1) << GEN6_GS_MAX_THREADS_SHIFT) |
  56                 GEN6_GS_STATISTICS_ENABLE |
  57                 GEN6_GS_SO_STATISTICS_ENABLE |
  58                 GEN6_GS_RENDERING_ENABLE);
  59       OUT_BATCH(GEN6_GS_SVBI_PAYLOAD_ENABLE |
  60                 GEN6_GS_SVBI_POSTINCREMENT_ENABLE |
  61                 (brw->gs.prog_data->svbi_postincrement_value <<
  62                  GEN6_GS_SVBI_POSTINCREMENT_VALUE_SHIFT) |
  63                 GEN6_GS_ENABLE);
  64       ADVANCE_BATCH();
  65    } else {
  66       BEGIN_BATCH(7);
  67       OUT_BATCH(_3DSTATE_GS << 16 | (7 - 2));
  68       OUT_BATCH(0); /* prog_bo */
  69       OUT_BATCH((0 << GEN6_GS_SAMPLER_COUNT_SHIFT) |
  70                 (0 << GEN6_GS_BINDING_TABLE_ENTRY_COUNT_SHIFT));
  71       OUT_BATCH(0); /* scratch space base offset */
  72       OUT_BATCH((1 << GEN6_GS_DISPATCH_START_GRF_SHIFT) |
  73                 (0 << GEN6_GS_URB_READ_LENGTH_SHIFT) |
  74                 (0 << GEN6_GS_URB_ENTRY_READ_OFFSET_SHIFT));
  75       OUT_BATCH((0 << GEN6_GS_MAX_THREADS_SHIFT) |
  76                 GEN6_GS_STATISTICS_ENABLE |
  77                 GEN6_GS_RENDERING_ENABLE);
  78       OUT_BATCH(0);
  79       ADVANCE_BATCH();
  80    }
  81 }
  82
  83 const struct brw_tracked_state gen6_gs_state = {
  84    .dirty = {
  85       .mesa  = _NEW_TRANSFORM,
  86       .brw   = BRW_NEW_CONTEXT,
  87       .cache = CACHE_NEW_GS_PROG
  88    },
  89    .emit = upload_gs_state,
  90 };