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 intel_context *intel = &brw->intel;
  48    /* BRW_NEW_VERTEX_PROGRAM */
  49    struct brw_vertex_program *vp =
  50       (struct brw_vertex_program *) brw->vertex_program;
  51    const struct gl_program_parameter_list *params = vp->program.Base.Parameters;
  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->intel.ctx, vp->program.Base.Parameters);
  58
  59    /* CACHE_NEW_VS_PROG */
  60    if (!brw->vs.prog_data->nr_pull_params) {
  61       if (brw->vs.const_bo) {
  62          drm_intel_bo_unreference(brw->vs.const_bo);
  63          brw->vs.const_bo = NULL;
  64          brw->vs.surf_offset[SURF_INDEX_VERT_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(brw->vs.const_bo);
  72    brw->vs.const_bo = drm_intel_bo_alloc(intel->bufmgr, "vp_const_buffer",
  73                                          brw->vs.prog_data->nr_pull_params * 4,
  74                                          64);
  75
  76    drm_intel_gem_bo_map_gtt(brw->vs.const_bo);
  77    for (i = 0; i < brw->vs.prog_data->nr_pull_params; i++) {
  78       memcpy(brw->vs.const_bo->virtual + i * 4,
  79              brw->vs.prog_data->pull_param[i],
  80              4);
  81    }
  82
  83    if (0) {
  84       for (i = 0; i < params->NumParameters; i++) {
  85          float *row = (float *)brw->vs.const_bo->virtual + i * 4;
  86          printf("vs const surface %3d: %4.3f %4.3f %4.3f %4.3f\n",
  87                 i, row[0], row[1], row[2], row[3]);
  88       }
  89    }
  90
  91    drm_intel_gem_bo_unmap_gtt(brw->vs.const_bo);
  92
  93    const int surf = SURF_INDEX_VERT_CONST_BUFFER;
  94    intel->vtbl.create_constant_surface(brw, brw->vs.const_bo, 0,
  95                                        params->NumParameters,
  96                                        &brw->vs.surf_offset[surf]);
  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 gl_context *ctx = &brw->intel.ctx;
 114    /* _NEW_PROGRAM */
 115    struct gl_shader_program *prog = ctx->Shader.CurrentVertexProgram;
 116
 117    if (!prog)
 118       return;
 119
 120    brw_upload_ubo_surfaces(brw, prog->_LinkedShaders[MESA_SHADER_VERTEX],
 121                            &brw->vs.surf_offset[SURF_INDEX_VS_UBO(0)]);
 122 }
 123
 124 const struct brw_tracked_state brw_vs_ubo_surfaces = {
 125    .dirty = {
 126       .mesa = (_NEW_PROGRAM |
 127                _NEW_BUFFER_OBJECT),
 128       .brw = BRW_NEW_BATCH,
 129       .cache = 0,
 130    },
 131    .emit = brw_upload_vs_ubo_surfaces,
 132 };
 133
 134 /**
 135  * Constructs the binding table for the WM surface state, which maps unit
 136  * numbers to surface state objects.
 137  */
 138 static void
 139 brw_vs_upload_binding_table(struct brw_context *brw)
 140 {
 141    uint32_t *bind;
 142    int i;
 143
 144    /* CACHE_NEW_VS_PROG: Skip making a binding table if we don't use textures or
 145     * pull constants.
 146     */
 147    if (brw->vs.prog_data->num_surfaces == 0) {
 148       if (brw->vs.bind_bo_offset != 0) {
 149          brw->state.dirty.brw |= BRW_NEW_VS_BINDING_TABLE;
 150          brw->vs.bind_bo_offset = 0;
 151       }
 152       return;
 153    }
 154
 155    /* Might want to calculate nr_surfaces first, to avoid taking up so much
 156     * space for the binding table.
 157     */
 158    bind = brw_state_batch(brw, AUB_TRACE_BINDING_TABLE,
 159                           sizeof(uint32_t) * BRW_MAX_VS_SURFACES,
 160                           32, &brw->vs.bind_bo_offset);
 161
 162    /* BRW_NEW_SURFACES and BRW_NEW_VS_CONSTBUF */
 163    for (i = 0; i < BRW_MAX_VS_SURFACES; i++) {
 164       bind[i] = brw->vs.surf_offset[i];
 165    }
 166
 167    brw->state.dirty.brw |= BRW_NEW_VS_BINDING_TABLE;
 168 }
 169
 170 const struct brw_tracked_state brw_vs_binding_table = {
 171    .dirty = {
 172       .mesa = 0,
 173       .brw = (BRW_NEW_BATCH |
 174               BRW_NEW_VS_CONSTBUF |
 175               BRW_NEW_SURFACES),
 176       .cache = CACHE_NEW_VS_PROG
 177    },
 178    .emit = brw_vs_upload_binding_table,
 179 };