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
  39 void
  40 brw_upload_vec4_pull_constants(struct brw_context *brw,
  41                                GLbitfield brw_new_constbuf,
  42                                const struct gl_program *prog,
  43                                struct brw_stage_state *stage_state,
  44                                const struct brw_vec4_prog_data *prog_data)
  45 {
  46    int i;
  47
  48    /* Updates the ParamaterValues[i] pointers for all parameters of the
  49     * basic type of PROGRAM_STATE_VAR.
  50     */
  51    _mesa_load_state_parameters(&brw->ctx, prog->Parameters);
  52
  53    if (!prog_data->nr_pull_params) {
  54       if (stage_state->const_bo) {
  55          drm_intel_bo_unreference(stage_state->const_bo);
  56          stage_state->const_bo = NULL;
  57          stage_state->surf_offset[SURF_INDEX_VEC4_CONST_BUFFER] = 0;
  58          brw->state.dirty.brw |= brw_new_constbuf;
  59       }
  60       return;
  61    }
  62
  63    /* _NEW_PROGRAM_CONSTANTS */
  64    drm_intel_bo_unreference(stage_state->const_bo);
  65    uint32_t size = prog_data->nr_pull_params * 4;
  66    stage_state->const_bo = drm_intel_bo_alloc(brw->bufmgr, "vec4_const_buffer",
  67                                            size, 64);
  68
  69    drm_intel_gem_bo_map_gtt(stage_state->const_bo);
  70
  71    for (i = 0; i < prog_data->nr_pull_params; i++) {
  72       memcpy(stage_state->const_bo->virtual + i * 4,
  73              prog_data->pull_param[i],
  74              4);
  75    }
  76
  77    if (0) {
  78       for (i = 0; i < ALIGN(prog_data->nr_pull_params, 4) / 4; i++) {
  79          float *row = (float *)stage_state->const_bo->virtual + i * 4;
  80          printf("const surface %3d: %4.3f %4.3f %4.3f %4.3f\n",
  81                 i, row[0], row[1], row[2], row[3]);
  82       }
  83    }
  84
  85    drm_intel_gem_bo_unmap_gtt(stage_state->const_bo);
  86
  87    const int surf = SURF_INDEX_VEC4_CONST_BUFFER;
  88    brw->vtbl.create_constant_surface(brw, stage_state->const_bo, 0, size,
  89                                      &stage_state->surf_offset[surf], false);
  90
  91    brw->state.dirty.brw |= brw_new_constbuf;
  92 }
  93
  94
  95 /* Creates a new VS constant buffer reflecting the current VS program's
  96  * constants, if needed by the VS program.
  97  *
  98  * Otherwise, constants go through the CURBEs using the brw_constant_buffer
  99  * state atom.
 100  */
 101 static void
 102 brw_upload_vs_pull_constants(struct brw_context *brw)
 103 {
 104    struct brw_stage_state *stage_state = &brw->vs.base;
 105
 106    /* BRW_NEW_VERTEX_PROGRAM */
 107    struct brw_vertex_program *vp =
 108       (struct brw_vertex_program *) brw->vertex_program;
 109
 110    /* CACHE_NEW_VS_PROG */
 111    const struct brw_vec4_prog_data *prog_data = &brw->vs.prog_data->base;
 112
 113    /* _NEW_PROGRAM_CONSTANTS */
 114    brw_upload_vec4_pull_constants(brw, BRW_NEW_VS_CONSTBUF, &vp->program.Base,
 115                                   stage_state, prog_data);
 116 }
 117
 118 const struct brw_tracked_state brw_vs_pull_constants = {
 119    .dirty = {
 120       .mesa = (_NEW_PROGRAM_CONSTANTS),
 121       .brw = (BRW_NEW_BATCH | BRW_NEW_VERTEX_PROGRAM),
 122       .cache = CACHE_NEW_VS_PROG,
 123    },
 124    .emit = brw_upload_vs_pull_constants,
 125 };
 126
 127 static void
 128 brw_upload_vs_ubo_surfaces(struct brw_context *brw)
 129 {
 130    struct brw_stage_state *stage_state = &brw->vs.base;
 131
 132    struct gl_context *ctx = &brw->ctx;
 133    /* _NEW_PROGRAM */
 134    struct gl_shader_program *prog = ctx->Shader.CurrentVertexProgram;
 135
 136    if (!prog)
 137       return;
 138
 139    brw_upload_ubo_surfaces(brw, prog->_LinkedShaders[MESA_SHADER_VERTEX],
 140                            &stage_state->surf_offset[SURF_INDEX_VEC4_UBO(0)]);
 141 }
 142
 143 const struct brw_tracked_state brw_vs_ubo_surfaces = {
 144    .dirty = {
 145       .mesa = _NEW_PROGRAM,
 146       .brw = BRW_NEW_BATCH | BRW_NEW_UNIFORM_BUFFER,
 147       .cache = 0,
 148    },
 149    .emit = brw_upload_vs_ubo_surfaces,
 150 };
 151
 152 /**
 153  * Constructs the binding table for the WM surface state, which maps unit
 154  * numbers to surface state objects.
 155  */
 156 static void
 157 brw_vs_upload_binding_table(struct brw_context *brw)
 158 {
 159    struct brw_stage_state *stage_state = &brw->vs.base;
 160    uint32_t *bind;
 161    int i;
 162
 163    if (INTEL_DEBUG & DEBUG_SHADER_TIME) {
 164       gen7_create_shader_time_surface(brw, &stage_state->surf_offset[SURF_INDEX_VEC4_SHADER_TIME]);
 165    }
 166
 167    /* CACHE_NEW_VS_PROG: Skip making a binding table if we don't use textures or
 168     * pull constants.
 169     */
 170    const unsigned entries = brw->vs.prog_data->base.binding_table_size;
 171    if (entries == 0) {
 172       if (stage_state->bind_bo_offset != 0) {
 173          brw->state.dirty.brw |= BRW_NEW_VS_BINDING_TABLE;
 174          stage_state->bind_bo_offset = 0;
 175       }
 176       return;
 177    }
 178
 179    /* Might want to calculate nr_surfaces first, to avoid taking up so much
 180     * space for the binding table.
 181     */
 182    bind = brw_state_batch(brw, AUB_TRACE_BINDING_TABLE,
 183                           sizeof(uint32_t) * entries,
 184                           32, &stage_state->bind_bo_offset);
 185
 186    /* BRW_NEW_SURFACES and BRW_NEW_VS_CONSTBUF */
 187    for (i = 0; i < entries; i++) {
 188       bind[i] = stage_state->surf_offset[i];
 189    }
 190
 191    brw->state.dirty.brw |= BRW_NEW_VS_BINDING_TABLE;
 192 }
 193
 194 const struct brw_tracked_state brw_vs_binding_table = {
 195    .dirty = {
 196       .mesa = 0,
 197       .brw = (BRW_NEW_BATCH |
 198               BRW_NEW_VS_CONSTBUF |
 199               BRW_NEW_SURFACES),
 200       .cache = CACHE_NEW_VS_PROG
 201    },
 202    .emit = brw_vs_upload_binding_table,
 203 };