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