src/mesa/drivers/dri/i965/gen7_gs_state.c

   1 /*
   2  * Copyright © 2013 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
  21  * DEALINGS IN THE SOFTWARE.
  22  */
  23
  24 #include "brw_context.h"
  25 #include "brw_state.h"
  26 #include "brw_defines.h"
  27 #include "intel_batchbuffer.h"
  28
  29
  30 static void
  31 gen7_upload_gs_push_constants(struct brw_context *brw)
  32 {
  33    /* BRW_NEW_GEOMETRY_PROGRAM */
  34    const struct brw_geometry_program *vp =
  35       (struct brw_geometry_program *) brw->geometry_program;
  36    if (!vp)
  37       return;
  38
  39    /* CACHE_NEW_GS_PROG */
  40    const struct brw_vec4_prog_data *prog_data = &brw->gs.prog_data->base;
  41    struct brw_stage_state *stage_state = &brw->gs.base;
  42
  43    gen6_upload_vec4_push_constants(brw, &vp->program.Base, prog_data,
  44                                    stage_state, AUB_TRACE_VS_CONSTANTS);
  45 }
  46
  47 const struct brw_tracked_state gen7_gs_push_constants = {
  48    .dirty = {
  49       .mesa  = _NEW_TRANSFORM | _NEW_PROGRAM_CONSTANTS,
  50       .brw   = (BRW_NEW_BATCH |
  51                 BRW_NEW_GEOMETRY_PROGRAM),
  52       .cache = CACHE_NEW_GS_PROG,
  53    },
  54    .emit = gen7_upload_gs_push_constants,
  55 };
  56
  57
  58 static void
  59 upload_gs_state(struct brw_context *brw)
  60 {
  61    const struct brw_stage_state *stage_state = &brw->gs.base;
  62    const int max_threads_shift = brw->is_haswell ?
  63       HSW_GS_MAX_THREADS_SHIFT : GEN6_GS_MAX_THREADS_SHIFT;
  64    /* BRW_NEW_GEOMETRY_PROGRAM */
  65    bool active = brw->geometry_program;
  66    /* CACHE_NEW_GS_PROG */
  67    const struct brw_vec4_prog_data *prog_data = &brw->gs.prog_data->base;
  68
  69    /* BRW_NEW_GS_BINDING_TABLE */
  70    BEGIN_BATCH(2);
  71    OUT_BATCH(_3DSTATE_BINDING_TABLE_POINTERS_GS << 16 | (2 - 2));
  72    OUT_BATCH(stage_state->bind_bo_offset);
  73    ADVANCE_BATCH();
  74
  75    /* CACHE_NEW_SAMPLER */
  76    BEGIN_BATCH(2);
  77    OUT_BATCH(_3DSTATE_SAMPLER_STATE_POINTERS_GS << 16 | (2 - 2));
  78    OUT_BATCH(stage_state->sampler_offset);
  79    ADVANCE_BATCH();
  80
  81    gen7_upload_constant_state(brw, stage_state, active, _3DSTATE_CONSTANT_GS);
  82
  83    if (active) {
  84       BEGIN_BATCH(7);
  85       OUT_BATCH(_3DSTATE_GS << 16 | (7 - 2));
  86       OUT_BATCH(stage_state->prog_offset);
  87       OUT_BATCH(((ALIGN(stage_state->sampler_count, 4)/4) <<
  88                  GEN6_GS_SAMPLER_COUNT_SHIFT));
  89
  90       if (brw->gs.prog_data->base.total_scratch) {
  91          OUT_RELOC(stage_state->scratch_bo,
  92                    I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER,
  93                    ffs(brw->gs.prog_data->base.total_scratch) - 11);
  94       } else {
  95          OUT_BATCH(0);
  96       }
  97
  98       uint32_t dw5 =
  99          ((brw->gs.prog_data->output_vertex_size_hwords * 2 - 1) <<
 100           GEN7_GS_OUTPUT_VERTEX_SIZE_SHIFT) |
 101          (brw->gs.prog_data->output_topology <<
 102           GEN7_GS_OUTPUT_TOPOLOGY_SHIFT) |
 103          (prog_data->urb_read_length <<
 104           GEN6_GS_URB_READ_LENGTH_SHIFT) |
 105          (0 << GEN6_GS_URB_ENTRY_READ_OFFSET_SHIFT) |
 106          (prog_data->dispatch_grf_start_reg <<
 107           GEN6_GS_DISPATCH_START_GRF_SHIFT);
 108       uint32_t dw6 =
 109          ((brw->max_gs_threads - 1) << max_threads_shift) |
 110          (brw->gs.prog_data->control_data_header_size_hwords <<
 111           GEN7_GS_CONTROL_DATA_HEADER_SIZE_SHIFT) |
 112          GEN7_GS_DISPATCH_MODE_DUAL_OBJECT |
 113          GEN6_GS_STATISTICS_ENABLE |
 114          GEN7_GS_ENABLE;
 115
 116       if (brw->is_haswell) {
 117          dw6 |= brw->gs.prog_data->control_data_format <<
 118             HSW_GS_CONTROL_DATA_FORMAT_SHIFT;
 119       } else {
 120          dw5 |= brw->gs.prog_data->control_data_format <<
 121             IVB_GS_CONTROL_DATA_FORMAT_SHIFT;
 122       }
 123
 124       OUT_BATCH(dw5);
 125       OUT_BATCH(dw6);
 126       OUT_BATCH(0);
 127       ADVANCE_BATCH();
 128    } else {
 129       BEGIN_BATCH(7);
 130       OUT_BATCH(_3DSTATE_GS << 16 | (7 - 2));
 131       OUT_BATCH(0); /* prog_bo */
 132       OUT_BATCH((0 << GEN6_GS_SAMPLER_COUNT_SHIFT) |
 133                 (0 << GEN6_GS_BINDING_TABLE_ENTRY_COUNT_SHIFT));
 134       OUT_BATCH(0); /* scratch space base offset */
 135       OUT_BATCH((1 << GEN6_GS_DISPATCH_START_GRF_SHIFT) |
 136                 (0 << GEN6_GS_URB_READ_LENGTH_SHIFT) |
 137                 GEN7_GS_INCLUDE_VERTEX_HANDLES |
 138                 (0 << GEN6_GS_URB_ENTRY_READ_OFFSET_SHIFT));
 139       OUT_BATCH((0 << GEN6_GS_MAX_THREADS_SHIFT) |
 140                 GEN6_GS_STATISTICS_ENABLE);
 141       OUT_BATCH(0);
 142       ADVANCE_BATCH();
 143    }
 144 }
 145
 146 const struct brw_tracked_state gen7_gs_state = {
 147    .dirty = {
 148       .mesa  = _NEW_TRANSFORM | _NEW_PROGRAM_CONSTANTS,
 149       .brw   = (BRW_NEW_CONTEXT |
 150                 BRW_NEW_GEOMETRY_PROGRAM |
 151                 BRW_NEW_GS_BINDING_TABLE |
 152                 BRW_NEW_BATCH |
 153                 BRW_NEW_PUSH_CONSTANT_ALLOCATION),
 154       .cache = CACHE_NEW_GS_PROG | CACHE_NEW_SAMPLER
 155    },
 156    .emit = upload_gs_state,
 157 };