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

   1 /*
   2  Copyright (C) Intel Corp.  2006.  All Rights Reserved.
   3  Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
   4  develop this 3D driver.
   5
   6  Permission is hereby granted, free of charge, to any person obtaining
   7  a copy of this software and associated documentation files (the
   8  "Software"), to deal in the Software without restriction, including
   9  without limitation the rights to use, copy, modify, merge, publish,
  10  distribute, sublicense, and/or sell copies of the Software, and to
  11  permit persons to whom the Software is furnished to do so, subject to
  12  the following conditions:
  13
  14  The above copyright notice and this permission notice (including the
  15  next paragraph) shall be included in all copies or substantial
  16  portions of the Software.
  17
  18  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  19  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  21  IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  22  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  23  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  24  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25
  26  **********************************************************************/
  27  /*
  28   * Authors:
  29   *   Keith Whitwell <keith@tungstengraphics.com>
  30   */
  31
  32 #include "main/mtypes.h"
  33 #include "program/prog_parameter.h"
  34
  35 #include "brw_context.h"
  36 #include "brw_state.h"
  37
  38 /* Creates a new VS constant buffer reflecting the current VS program's
  39  * constants, if needed by the VS program.
  40  *
  41  * Otherwise, constants go through the CURBEs using the brw_constant_buffer
  42  * state atom.
  43  */
  44 static void
  45 brw_upload_vs_pull_constants(struct brw_context *brw)
  46 {
  47    struct brw_stage_state *stage_state = &brw->vs.base;
  48
  49    /* BRW_NEW_VERTEX_PROGRAM */
  50    struct brw_vertex_program *vp =
  51       (struct brw_vertex_program *) brw->vertex_program;
  52    int i;
  53
  54    /* Updates the ParamaterValues[i] pointers for all parameters of the
  55     * basic type of PROGRAM_STATE_VAR.
  56     */
  57    _mesa_load_state_parameters(&brw->ctx, vp->program.Base.Parameters);
  58
  59    /* CACHE_NEW_VS_PROG */
  60    if (!brw->vs.prog_data->base.nr_pull_params) {
  61       if (stage_state->const_bo) {
  62          drm_intel_bo_unreference(stage_state->const_bo);
  63          stage_state->const_bo = NULL;
  64          stage_state->surf_offset[SURF_INDEX_VEC4_CONST_BUFFER] = 0;
  65          brw->state.dirty.brw |= BRW_NEW_VS_CONSTBUF;
  66       }
  67       return;
  68    }
  69
  70    /* _NEW_PROGRAM_CONSTANTS */
  71    drm_intel_bo_unreference(stage_state->const_bo);
  72    uint32_t size = brw->vs.prog_data->base.nr_pull_params * 4;
  73    stage_state->const_bo = drm_intel_bo_alloc(brw->bufmgr, "vp_const_buffer",
  74                                               size, 64);
  75
  76    drm_intel_gem_bo_map_gtt(stage_state->const_bo);
  77    for (i = 0; i < brw->vs.prog_data->base.nr_pull_params; i++) {
  78       memcpy(stage_state->const_bo->virtual + i * 4,
  79              brw->vs.prog_data->base.pull_param[i],
  80              4);
  81    }
  82
  83    if (0) {
  84       for (i = 0; i < ALIGN(brw->vs.prog_data->base.nr_pull_params, 4) / 4;
  85            i++) {
  86          float *row = (float *)stage_state->const_bo->virtual + i * 4;
  87          printf("vs const surface %3d: %4.3f %4.3f %4.3f %4.3f\n",
  88                 i, row[0], row[1], row[2], row[3]);
  89       }
  90    }
  91
  92    drm_intel_gem_bo_unmap_gtt(stage_state->const_bo);
  93
  94    const int surf = SURF_INDEX_VEC4_CONST_BUFFER;
  95    brw->vtbl.create_constant_surface(brw, stage_state->const_bo, 0, size,
  96                                      &stage_state->surf_offset[surf], false);
  97
  98    brw->state.dirty.brw |= BRW_NEW_VS_CONSTBUF;
  99 }
 100
 101 const struct brw_tracked_state brw_vs_pull_constants = {
 102    .dirty = {
 103       .mesa = (_NEW_PROGRAM_CONSTANTS),
 104       .brw = (BRW_NEW_BATCH | BRW_NEW_VERTEX_PROGRAM),
 105       .cache = CACHE_NEW_VS_PROG,
 106    },
 107    .emit = brw_upload_vs_pull_constants,
 108 };
 109
 110 static void
 111 brw_upload_vs_ubo_surfaces(struct brw_context *brw)
 112 {
 113    struct brw_stage_state *stage_state = &brw->vs.base;
 114
 115    struct gl_context *ctx = &brw->ctx;
 116    /* _NEW_PROGRAM */
 117    struct gl_shader_program *prog = ctx->Shader.CurrentVertexProgram;
 118
 119    if (!prog)
 120       return;
 121
 122    brw_upload_ubo_surfaces(brw, prog->_LinkedShaders[MESA_SHADER_VERTEX],
 123                            &stage_state->surf_offset[SURF_INDEX_VEC4_UBO(0)]);
 124 }
 125
 126 const struct brw_tracked_state brw_vs_ubo_surfaces = {
 127    .dirty = {
 128       .mesa = _NEW_PROGRAM,
 129       .brw = BRW_NEW_BATCH | BRW_NEW_UNIFORM_BUFFER,
 130       .cache = 0,
 131    },
 132    .emit = brw_upload_vs_ubo_surfaces,
 133 };
 134
 135 /**
 136  * Constructs the binding table for the WM surface state, which maps unit
 137  * numbers to surface state objects.
 138  */
 139 static void
 140 brw_vs_upload_binding_table(struct brw_context *brw)
 141 {
 142    struct brw_stage_state *stage_state = &brw->vs.base;
 143    uint32_t *bind;
 144    int i;
 145
 146    if (INTEL_DEBUG & DEBUG_SHADER_TIME) {
 147       gen7_create_shader_time_surface(brw, &stage_state->surf_offset[SURF_INDEX_VEC4_SHADER_TIME]);
 148    }
 149
 150    /* CACHE_NEW_VS_PROG: Skip making a binding table if we don't use textures or
 151     * pull constants.
 152     */
 153    const unsigned entries = brw->vs.prog_data->base.binding_table_size;
 154    if (entries == 0) {
 155       if (stage_state->bind_bo_offset != 0) {
 156          brw->state.dirty.brw |= BRW_NEW_VS_BINDING_TABLE;
 157          stage_state->bind_bo_offset = 0;
 158       }
 159       return;
 160    }
 161
 162    /* Might want to calculate nr_surfaces first, to avoid taking up so much
 163     * space for the binding table.
 164     */
 165    bind = brw_state_batch(brw, AUB_TRACE_BINDING_TABLE,
 166                           sizeof(uint32_t) * entries,
 167                           32, &stage_state->bind_bo_offset);
 168
 169    /* BRW_NEW_SURFACES and BRW_NEW_VS_CONSTBUF */
 170    for (i = 0; i < entries; i++) {
 171       bind[i] = stage_state->surf_offset[i];
 172    }
 173
 174    brw->state.dirty.brw |= BRW_NEW_VS_BINDING_TABLE;
 175 }
 176
 177 const struct brw_tracked_state brw_vs_binding_table = {
 178    .dirty = {
 179       .mesa = 0,
 180       .brw = (BRW_NEW_BATCH |
 181               BRW_NEW_VS_CONSTBUF |
 182               BRW_NEW_SURFACES),
 183       .cache = CACHE_NEW_VS_PROG
 184    },
 185    .emit = brw_vs_upload_binding_table,
 186 };