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    uint32_t surf_index = prog_data->base.binding_table.pull_constants_start;
  48
  49    /* Updates the ParamaterValues[i] pointers for all parameters of the
  50     * basic type of PROGRAM_STATE_VAR.
  51     */
  52    _mesa_load_state_parameters(&brw->ctx, prog->Parameters);
  53
  54    if (!prog_data->nr_pull_params) {
  55       if (stage_state->const_bo) {
  56          drm_intel_bo_unreference(stage_state->const_bo);
  57          stage_state->const_bo = NULL;
  58          stage_state->surf_offset[surf_index] = 0;
  59          brw->state.dirty.brw |= brw_new_constbuf;
  60       }
  61       return;
  62    }
  63
  64    /* _NEW_PROGRAM_CONSTANTS */
  65    drm_intel_bo_unreference(stage_state->const_bo);
  66    uint32_t size = prog_data->nr_pull_params * 4;
  67    stage_state->const_bo = drm_intel_bo_alloc(brw->bufmgr, "vec4_const_buffer",
  68                                            size, 64);
  69
  70    drm_intel_gem_bo_map_gtt(stage_state->const_bo);
  71
  72    for (i = 0; i < prog_data->nr_pull_params; i++) {
  73       memcpy(stage_state->const_bo->virtual + i * 4,
  74              prog_data->pull_param[i],
  75              4);
  76    }
  77
  78    if (0) {
  79       for (i = 0; i < ALIGN(prog_data->nr_pull_params, 4) / 4; i++) {
  80          float *row = (float *)stage_state->const_bo->virtual + i * 4;
  81          printf("const surface %3d: %4.3f %4.3f %4.3f %4.3f\n",
  82                 i, row[0], row[1], row[2], row[3]);
  83       }
  84    }
  85
  86    drm_intel_gem_bo_unmap_gtt(stage_state->const_bo);
  87
  88    brw->vtbl.create_constant_surface(brw, stage_state->const_bo, 0, size,
  89                                      &stage_state->surf_offset[surf_index],
  90                                      false);
  91
  92    brw->state.dirty.brw |= brw_new_constbuf;
  93 }
  94
  95
  96 /* Creates a new VS constant buffer reflecting the current VS program's
  97  * constants, if needed by the VS program.
  98  *
  99  * Otherwise, constants go through the CURBEs using the brw_constant_buffer
 100  * state atom.
 101  */
 102 static void
 103 brw_upload_vs_pull_constants(struct brw_context *brw)
 104 {
 105    struct brw_stage_state *stage_state = &brw->vs.base;
 106
 107    /* BRW_NEW_VERTEX_PROGRAM */
 108    struct brw_vertex_program *vp =
 109       (struct brw_vertex_program *) brw->vertex_program;
 110
 111    /* CACHE_NEW_VS_PROG */
 112    const struct brw_vec4_prog_data *prog_data = &brw->vs.prog_data->base;
 113
 114    /* _NEW_PROGRAM_CONSTANTS */
 115    brw_upload_vec4_pull_constants(brw, BRW_NEW_VS_CONSTBUF, &vp->program.Base,
 116                                   stage_state, prog_data);
 117 }
 118
 119 const struct brw_tracked_state brw_vs_pull_constants = {
 120    .dirty = {
 121       .mesa = (_NEW_PROGRAM_CONSTANTS),
 122       .brw = (BRW_NEW_BATCH | BRW_NEW_VERTEX_PROGRAM),
 123       .cache = CACHE_NEW_VS_PROG,
 124    },
 125    .emit = brw_upload_vs_pull_constants,
 126 };
 127
 128 static void
 129 brw_upload_vs_ubo_surfaces(struct brw_context *brw)
 130 {
 131    struct gl_context *ctx = &brw->ctx;
 132    /* _NEW_PROGRAM */
 133    struct gl_shader_program *prog = ctx->Shader.CurrentVertexProgram;
 134
 135    if (!prog)
 136       return;
 137
 138    /* CACHE_NEW_VS_PROG */
 139    brw_upload_ubo_surfaces(brw, prog->_LinkedShaders[MESA_SHADER_VERTEX],
 140                            &brw->vs.base, &brw->vs.prog_data->base.base);
 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 = CACHE_NEW_VS_PROG,
 148    },
 149    .emit = brw_upload_vs_ubo_surfaces,
 150 };