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 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 <keithw@vmware.com>
  30   */
  31
  32 #include "main/mtypes.h"
  33 #include "program/prog_parameter.h"
  34 #include "main/shaderapi.h"
  35
  36 #include "brw_context.h"
  37 #include "brw_state.h"
  38 #include "intel_buffer_objects.h"
  39
  40 /**
  41  * Creates a temporary BO containing the pull constant data for the shader
  42  * stage, and the SURFACE_STATE struct that points at it.
  43  *
  44  * Pull constants are GLSL uniforms (and other constant data) beyond what we
  45  * could fit as push constants, or that have variable-index array access
  46  * (which is easiest to support using pull constants, and avoids filling
  47  * register space with mostly-unused data).
  48  *
  49  * Compare this path to brw_curbe.c for gen4/5 push constants, and
  50  * gen6_vs_state.c for gen6+ push constants.
  51  */
  52 void
  53 brw_upload_pull_constants(struct brw_context *brw,
  54                           GLbitfield64 brw_new_constbuf,
  55                           const struct gl_program *prog,
  56                           struct brw_stage_state *stage_state,
  57                           const struct brw_stage_prog_data *prog_data)
  58 {
  59    unsigned i;
  60    uint32_t surf_index = prog_data->binding_table.pull_constants_start;
  61
  62    if (!prog_data->nr_pull_params) {
  63       if (stage_state->surf_offset[surf_index]) {
  64          stage_state->surf_offset[surf_index] = 0;
  65          brw->ctx.NewDriverState |= brw_new_constbuf;
  66       }
  67       return;
  68    }
  69
  70    /* Updates the ParamaterValues[i] pointers for all parameters of the
  71     * basic type of PROGRAM_STATE_VAR.
  72     */
  73    _mesa_load_state_parameters(&brw->ctx, prog->Parameters);
  74
  75    /* BRW_NEW_*_PROG_DATA | _NEW_PROGRAM_CONSTANTS */
  76    uint32_t size = prog_data->nr_pull_params * 4;
  77    struct brw_bo *const_bo = NULL;
  78    uint32_t const_offset;
  79    gl_constant_value *constants = intel_upload_space(brw, size, 64,
  80                                                      &const_bo, &const_offset);
  81
  82    STATIC_ASSERT(sizeof(gl_constant_value) == sizeof(float));
  83
  84    for (i = 0; i < prog_data->nr_pull_params; i++) {
  85       constants[i] = *prog_data->pull_param[i];
  86    }
  87
  88    if (0) {
  89       for (i = 0; i < ALIGN(prog_data->nr_pull_params, 4) / 4; i++) {
  90          const gl_constant_value *row = &constants[i * 4];
  91          fprintf(stderr, "const surface %3d: %4.3f %4.3f %4.3f %4.3f\n",
  92                  i, row[0].f, row[1].f, row[2].f, row[3].f);
  93       }
  94    }
  95
  96    brw_create_constant_surface(brw, const_bo, const_offset, size,
  97                                &stage_state->surf_offset[surf_index]);
  98    brw_bo_unreference(const_bo);
  99
 100    brw->ctx.NewDriverState |= brw_new_constbuf;
 101 }
 102
 103
 104 /* Creates a new VS constant buffer reflecting the current VS program's
 105  * constants, if needed by the VS program.
 106  *
 107  * Otherwise, constants go through the CURBEs using the brw_constant_buffer
 108  * state atom.
 109  */
 110 static void
 111 brw_upload_vs_pull_constants(struct brw_context *brw)
 112 {
 113    struct brw_stage_state *stage_state = &brw->vs.base;
 114
 115    /* BRW_NEW_VERTEX_PROGRAM */
 116    struct brw_program *vp =
 117       (struct brw_program *) brw->programs[MESA_SHADER_VERTEX];
 118
 119    /* BRW_NEW_VS_PROG_DATA */
 120    const struct brw_stage_prog_data *prog_data = brw->vs.base.prog_data;
 121
 122    _mesa_shader_write_subroutine_indices(&brw->ctx, MESA_SHADER_VERTEX);
 123    /* _NEW_PROGRAM_CONSTANTS */
 124    brw_upload_pull_constants(brw, BRW_NEW_VS_CONSTBUF, &vp->program,
 125                              stage_state, prog_data);
 126 }
 127
 128 const struct brw_tracked_state brw_vs_pull_constants = {
 129    .dirty = {
 130       .mesa = _NEW_PROGRAM_CONSTANTS,
 131       .brw = BRW_NEW_BATCH |
 132              BRW_NEW_VERTEX_PROGRAM |
 133              BRW_NEW_VS_PROG_DATA,
 134    },
 135    .emit = brw_upload_vs_pull_constants,
 136 };
 137
 138 static void
 139 brw_upload_vs_ubo_surfaces(struct brw_context *brw)
 140 {
 141    struct gl_context *ctx = &brw->ctx;
 142    /* _NEW_PROGRAM */
 143    struct gl_program *prog = ctx->_Shader->CurrentProgram[MESA_SHADER_VERTEX];
 144
 145    /* BRW_NEW_VS_PROG_DATA */
 146    brw_upload_ubo_surfaces(brw, prog, &brw->vs.base, brw->vs.base.prog_data);
 147 }
 148
 149 const struct brw_tracked_state brw_vs_ubo_surfaces = {
 150    .dirty = {
 151       .mesa = _NEW_PROGRAM,
 152       .brw = BRW_NEW_BATCH |
 153              BRW_NEW_UNIFORM_BUFFER |
 154              BRW_NEW_VS_PROG_DATA,
 155    },
 156    .emit = brw_upload_vs_ubo_surfaces,
 157 };
 158
 159 static void
 160 brw_upload_vs_abo_surfaces(struct brw_context *brw)
 161 {
 162    /* _NEW_PROGRAM */
 163    const struct gl_program *vp = brw->programs[MESA_SHADER_VERTEX];
 164
 165    if (vp) {
 166       /* BRW_NEW_VS_PROG_DATA */
 167       brw_upload_abo_surfaces(brw, vp, &brw->vs.base, brw->vs.base.prog_data);
 168    }
 169 }
 170
 171 const struct brw_tracked_state brw_vs_abo_surfaces = {
 172    .dirty = {
 173       .mesa = _NEW_PROGRAM,
 174       .brw = BRW_NEW_ATOMIC_BUFFER |
 175              BRW_NEW_BATCH |
 176              BRW_NEW_VS_PROG_DATA,
 177    },
 178    .emit = brw_upload_vs_abo_surfaces,
 179 };
 180
 181 static void
 182 brw_upload_vs_image_surfaces(struct brw_context *brw)
 183 {
 184    /* BRW_NEW_VERTEX_PROGRAM */
 185    const struct gl_program *vp = brw->programs[MESA_SHADER_VERTEX];
 186
 187    if (vp) {
 188       /* BRW_NEW_VS_PROG_DATA, BRW_NEW_IMAGE_UNITS, _NEW_TEXTURE */
 189       brw_upload_image_surfaces(brw, vp, &brw->vs.base,
 190                                 brw->vs.base.prog_data);
 191    }
 192 }
 193
 194 const struct brw_tracked_state brw_vs_image_surfaces = {
 195    .dirty = {
 196       .mesa = _NEW_TEXTURE,
 197       .brw = BRW_NEW_BATCH |
 198              BRW_NEW_AUX_STATE |
 199              BRW_NEW_IMAGE_UNITS |
 200              BRW_NEW_VERTEX_PROGRAM |
 201              BRW_NEW_VS_PROG_DATA,
 202    },
 203    .emit = brw_upload_vs_image_surfaces,
 204 };