src/mesa/drivers/dri/i965/gen8_vs_state.c

   1 /*
   2  * Copyright © 2011 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 "brw_context.h"
  25 #include "brw_state.h"
  26 #include "brw_defines.h"
  27 #include "brw_util.h"
  28 #include "program/prog_parameter.h"
  29 #include "program/prog_statevars.h"
  30 #include "intel_batchbuffer.h"
  31
  32 static void
  33 upload_vs_state(struct brw_context *brw)
  34 {
  35    const struct gen_device_info *devinfo = &brw->screen->devinfo;
  36    const struct brw_stage_state *stage_state = &brw->vs.base;
  37    uint32_t floating_point_mode = 0;
  38
  39    /* BRW_NEW_VS_PROG_DATA */
  40    const struct brw_stage_prog_data *prog_data = stage_state->prog_data;
  41    const struct brw_vue_prog_data *vue_prog_data =
  42       brw_vue_prog_data(stage_state->prog_data);
  43
  44    assert(vue_prog_data->dispatch_mode == DISPATCH_MODE_SIMD8 ||
  45           vue_prog_data->dispatch_mode == DISPATCH_MODE_4X2_DUAL_OBJECT);
  46
  47    if (prog_data->use_alt_mode)
  48       floating_point_mode = GEN6_VS_FLOATING_POINT_MODE_ALT;
  49
  50    BEGIN_BATCH(9);
  51    OUT_BATCH(_3DSTATE_VS << 16 | (9 - 2));
  52    OUT_BATCH(stage_state->prog_offset);
  53    OUT_BATCH(0);
  54    OUT_BATCH(floating_point_mode |
  55              ((ALIGN(stage_state->sampler_count, 4) / 4) <<
  56                GEN6_VS_SAMPLER_COUNT_SHIFT) |
  57              ((prog_data->binding_table.size_bytes / 4) <<
  58                GEN6_VS_BINDING_TABLE_ENTRY_COUNT_SHIFT));
  59
  60    if (prog_data->total_scratch) {
  61       OUT_RELOC64(stage_state->scratch_bo,
  62                   I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER,
  63                   ffs(stage_state->per_thread_scratch) - 11);
  64    } else {
  65       OUT_BATCH(0);
  66       OUT_BATCH(0);
  67    }
  68
  69    OUT_BATCH((prog_data->dispatch_grf_start_reg <<
  70               GEN6_VS_DISPATCH_START_GRF_SHIFT) |
  71              (vue_prog_data->urb_read_length <<
  72               GEN6_VS_URB_READ_LENGTH_SHIFT) |
  73              (0 << GEN6_VS_URB_ENTRY_READ_OFFSET_SHIFT));
  74
  75    uint32_t simd8_enable =
  76       vue_prog_data->dispatch_mode == DISPATCH_MODE_SIMD8 ?
  77       GEN8_VS_SIMD8_ENABLE : 0;
  78    OUT_BATCH(((devinfo->max_vs_threads - 1) << HSW_VS_MAX_THREADS_SHIFT) |
  79              GEN6_VS_STATISTICS_ENABLE |
  80              simd8_enable |
  81              GEN6_VS_ENABLE);
  82
  83    OUT_BATCH(vue_prog_data->cull_distance_mask);
  84    ADVANCE_BATCH();
  85 }
  86
  87 const struct brw_tracked_state gen8_vs_state = {
  88    .dirty = {
  89       .mesa  = 0,
  90       .brw   = BRW_NEW_BATCH |
  91                BRW_NEW_BLORP |
  92                BRW_NEW_CONTEXT |
  93                BRW_NEW_VS_PROG_DATA,
  94    },
  95    .emit = upload_vs_state,
  96 };