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 gl_context *ctx = &brw->intel.ctx;
  48    struct intel_context *intel = &brw->intel;
  49    /* BRW_NEW_VERTEX_PROGRAM */
  50    struct brw_vertex_program *vp =
  51       (struct brw_vertex_program *) brw->vertex_program;
  52    const struct gl_program_parameter_list *params = vp->program.Base.Parameters;
  53    int i;
  54
  55    if (vp->program.IsNVProgram)
  56       _mesa_load_tracked_matrices(ctx);
  57
  58    /* Updates the ParamaterValues[i] pointers for all parameters of the
  59     * basic type of PROGRAM_STATE_VAR.
  60     */
  61    _mesa_load_state_parameters(&brw->intel.ctx, vp->program.Base.Parameters);
  62
  63    /* CACHE_NEW_VS_PROG */
  64    if (!brw->vs.prog_data->nr_pull_params) {
  65       if (brw->vs.const_bo) {
  66          drm_intel_bo_unreference(brw->vs.const_bo);
  67          brw->vs.const_bo = NULL;
  68          brw->vs.surf_offset[SURF_INDEX_VERT_CONST_BUFFER] = 0;
  69          brw->state.dirty.brw |= BRW_NEW_VS_CONSTBUF;
  70       }
  71       return;
  72    }
  73
  74    /* _NEW_PROGRAM_CONSTANTS */
  75    drm_intel_bo_unreference(brw->vs.const_bo);
  76    brw->vs.const_bo = drm_intel_bo_alloc(intel->bufmgr, "vp_const_buffer",
  77                                          brw->vs.prog_data->nr_pull_params * 4,
  78                                          64);
  79
  80    drm_intel_gem_bo_map_gtt(brw->vs.const_bo);
  81    for (i = 0; i < brw->vs.prog_data->nr_pull_params; i++) {
  82       memcpy(brw->vs.const_bo->virtual + i * 4,
  83              brw->vs.prog_data->pull_param[i],
  84              4);
  85    }
  86
  87    if (0) {
  88       for (i = 0; i < params->NumParameters; i++) {
  89          float *row = (float *)brw->vs.const_bo->virtual + i * 4;
  90          printf("vs const surface %3d: %4.3f %4.3f %4.3f %4.3f\n",
  91                 i, row[0], row[1], row[2], row[3]);
  92       }
  93    }
  94
  95    drm_intel_gem_bo_unmap_gtt(brw->vs.const_bo);
  96
  97    const int surf = SURF_INDEX_VERT_CONST_BUFFER;
  98    intel->vtbl.create_constant_surface(brw, brw->vs.const_bo,
  99                                        params->NumParameters,
 100                                        &brw->vs.surf_offset[surf]);
 101
 102    brw->state.dirty.brw |= BRW_NEW_VS_CONSTBUF;
 103 }
 104
 105 const struct brw_tracked_state brw_vs_pull_constants = {
 106    .dirty = {
 107       .mesa = (_NEW_PROGRAM_CONSTANTS),
 108       .brw = (BRW_NEW_BATCH | BRW_NEW_VERTEX_PROGRAM),
 109       .cache = CACHE_NEW_VS_PROG,
 110    },
 111    .emit = brw_upload_vs_pull_constants,
 112 };
 113
 114 /**
 115  * Constructs the binding table for the WM surface state, which maps unit
 116  * numbers to surface state objects.
 117  */
 118 static void
 119 brw_vs_upload_binding_table(struct brw_context *brw)
 120 {
 121    uint32_t *bind;
 122    int i;
 123
 124    /* CACHE_NEW_VS_PROG: Skip making a binding table if we don't use textures or
 125     * pull constants.
 126     */
 127    if (brw->vs.prog_data->num_surfaces == 0) {
 128       if (brw->vs.bind_bo_offset != 0) {
 129          brw->state.dirty.brw |= BRW_NEW_VS_BINDING_TABLE;
 130          brw->vs.bind_bo_offset = 0;
 131       }
 132       return;
 133    }
 134
 135    /* Might want to calculate nr_surfaces first, to avoid taking up so much
 136     * space for the binding table.
 137     */
 138    bind = brw_state_batch(brw, AUB_TRACE_BINDING_TABLE,
 139                           sizeof(uint32_t) * BRW_MAX_SURFACES,
 140                           32, &brw->vs.bind_bo_offset);
 141
 142    /* BRW_NEW_SURFACES and BRW_NEW_VS_CONSTBUF */
 143    for (i = 0; i < BRW_MAX_VS_SURFACES; i++) {
 144       bind[i] = brw->vs.surf_offset[i];
 145    }
 146
 147    brw->state.dirty.brw |= BRW_NEW_VS_BINDING_TABLE;
 148 }
 149
 150 const struct brw_tracked_state brw_vs_binding_table = {
 151    .dirty = {
 152       .mesa = 0,
 153       .brw = (BRW_NEW_BATCH |
 154               BRW_NEW_VS_CONSTBUF |
 155               BRW_NEW_SURFACES),
 156       .cache = CACHE_NEW_VS_PROG
 157    },
 158    .emit = brw_vs_upload_binding_table,
 159 };