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 void
 154 brw_vec4_upload_binding_table(struct brw_context *brw,
 155                               GLbitfield brw_new_binding_table,
 156                               struct brw_stage_state *stage_state,
 157                               const struct brw_vec4_prog_data *prog_data)
 158 {
 159    uint32_t *bind;
 160    int i;
 161
 162    if (INTEL_DEBUG & DEBUG_SHADER_TIME) {
 163       gen7_create_shader_time_surface(brw, &stage_state->surf_offset[SURF_INDEX_VEC4_SHADER_TIME]);
 164    }
 165
 166    /* If there are no surfaces, skip making the binding table altogether. */
 167    const unsigned entries = prog_data->binding_table_size;
 168    if (entries == 0) {
 169       if (stage_state->bind_bo_offset != 0) {
 170          brw->state.dirty.brw |= brw_new_binding_table;
 171          stage_state->bind_bo_offset = 0;
 172       }
 173       return;
 174    }
 175
 176    bind = brw_state_batch(brw, AUB_TRACE_BINDING_TABLE,
 177                           sizeof(uint32_t) * entries,
 178                           32, &stage_state->bind_bo_offset);
 179
 180    /* BRW_NEW_SURFACES and BRW_NEW_*_CONSTBUF */
 181    for (i = 0; i < entries; i++) {
 182       bind[i] = stage_state->surf_offset[i];
 183    }
 184
 185    brw->state.dirty.brw |= brw_new_binding_table;
 186 }
 187
 188
 189 /**
 190  * Constructs the binding table for the WM surface state, which maps unit
 191  * numbers to surface state objects.
 192  */
 193 static void
 194 brw_vs_upload_binding_table(struct brw_context *brw)
 195 {
 196    struct brw_stage_state *stage_state = &brw->vs.base;
 197    /* CACHE_NEW_VS_PROG */
 198    const struct brw_vec4_prog_data *prog_data = &brw->vs.prog_data->base;
 199
 200    /* BRW_NEW_SURFACES and BRW_NEW_VS_CONSTBUF */
 201    brw_vec4_upload_binding_table(brw, BRW_NEW_VS_BINDING_TABLE, stage_state,
 202                                  prog_data);
 203 }
 204
 205 const struct brw_tracked_state brw_vs_binding_table = {
 206    .dirty = {
 207       .mesa = 0,
 208       .brw = (BRW_NEW_BATCH |
 209               BRW_NEW_VS_CONSTBUF |
 210               BRW_NEW_SURFACES),
 211       .cache = CACHE_NEW_VS_PROG
 212    },
 213    .emit = brw_vs_upload_binding_table,
 214 };