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  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.  
  35. #include "brw_context.h"
  36. #include "brw_state.h"
  37. #include "intel_buffer_objects.h"
  38.  
  39. /**
  40.  * Creates a temporary BO containing the pull constant data for the shader
  41.  * stage, and the SURFACE_STATE struct that points at it.
  42.  *
  43.  * Pull constants are GLSL uniforms (and other constant data) beyond what we
  44.  * could fit as push constants, or that have variable-index array access
  45.  * (which is easiest to support using pull constants, and avoids filling
  46.  * register space with mostly-unused data).
  47.  *
  48.  * Compare this path to brw_curbe.c for gen4/5 push constants, and
  49.  * gen6_vs_state.c for gen6+ push constants.
  50.  */
  51. void
  52. brw_upload_pull_constants(struct brw_context *brw,
  53.                           GLbitfield brw_new_constbuf,
  54.                           const struct gl_program *prog,
  55.                           struct brw_stage_state *stage_state,
  56.                           const struct brw_stage_prog_data *prog_data,
  57.                           bool dword_pitch)
  58. {
  59.    int 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.    drm_intel_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.                                dword_pitch);
  99.    drm_intel_bo_unreference(const_bo);
  100.  
  101.    brw->ctx.NewDriverState |= brw_new_constbuf;
  102. }
  103.  
  104.  
  105. /* Creates a new VS constant buffer reflecting the current VS program's
  106.  * constants, if needed by the VS program.
  107.  *
  108.  * Otherwise, constants go through the CURBEs using the brw_constant_buffer
  109.  * state atom.
  110.  */
  111. static void
  112. brw_upload_vs_pull_constants(struct brw_context *brw)
  113. {
  114.    struct brw_stage_state *stage_state = &brw->vs.base;
  115.    bool dword_pitch;
  116.  
  117.    /* BRW_NEW_VERTEX_PROGRAM */
  118.    struct brw_vertex_program *vp =
  119.       (struct brw_vertex_program *) brw->vertex_program;
  120.  
  121.    /* BRW_NEW_VS_PROG_DATA */
  122.    const struct brw_stage_prog_data *prog_data = &brw->vs.prog_data->base.base;
  123.  
  124.    dword_pitch = brw->vs.prog_data->base.simd8;
  125.  
  126.    /* _NEW_PROGRAM_CONSTANTS */
  127.    brw_upload_pull_constants(brw, BRW_NEW_VS_CONSTBUF, &vp->program.Base,
  128.                              stage_state, prog_data, dword_pitch);
  129. }
  130.  
  131. const struct brw_tracked_state brw_vs_pull_constants = {
  132.    .dirty = {
  133.       .mesa = _NEW_PROGRAM_CONSTANTS,
  134.       .brw = BRW_NEW_BATCH |
  135.              BRW_NEW_VERTEX_PROGRAM |
  136.              BRW_NEW_VS_PROG_DATA,
  137.    },
  138.    .emit = brw_upload_vs_pull_constants,
  139. };
  140.  
  141. static void
  142. brw_upload_vs_ubo_surfaces(struct brw_context *brw)
  143. {
  144.    struct gl_context *ctx = &brw->ctx;
  145.    /* _NEW_PROGRAM */
  146.    struct gl_shader_program *prog =
  147.       ctx->_Shader->CurrentProgram[MESA_SHADER_VERTEX];
  148.    bool dword_pitch;
  149.  
  150.    if (!prog)
  151.       return;
  152.  
  153.    /* BRW_NEW_VS_PROG_DATA */
  154.    dword_pitch = brw->vs.prog_data->base.simd8;
  155.    brw_upload_ubo_surfaces(brw, prog->_LinkedShaders[MESA_SHADER_VERTEX],
  156.                            &brw->vs.base, &brw->vs.prog_data->base.base,
  157.                            dword_pitch);
  158. }
  159.  
  160. const struct brw_tracked_state brw_vs_ubo_surfaces = {
  161.    .dirty = {
  162.       .mesa = _NEW_PROGRAM,
  163.       .brw = BRW_NEW_BATCH |
  164.              BRW_NEW_UNIFORM_BUFFER |
  165.              BRW_NEW_VS_PROG_DATA,
  166.    },
  167.    .emit = brw_upload_vs_ubo_surfaces,
  168. };
  169.  
  170. static void
  171. brw_upload_vs_abo_surfaces(struct brw_context *brw)
  172. {
  173.    struct gl_context *ctx = &brw->ctx;
  174.    /* _NEW_PROGRAM */
  175.    struct gl_shader_program *prog =
  176.       ctx->_Shader->CurrentProgram[MESA_SHADER_VERTEX];
  177.  
  178.    if (prog) {
  179.       /* BRW_NEW_VS_PROG_DATA */
  180.       brw_upload_abo_surfaces(brw, prog, &brw->vs.base,
  181.                               &brw->vs.prog_data->base.base);
  182.    }
  183. }
  184.  
  185. const struct brw_tracked_state brw_vs_abo_surfaces = {
  186.    .dirty = {
  187.       .mesa = _NEW_PROGRAM,
  188.       .brw = BRW_NEW_ATOMIC_BUFFER |
  189.              BRW_NEW_BATCH |
  190.              BRW_NEW_VS_PROG_DATA,
  191.    },
  192.    .emit = brw_upload_vs_abo_surfaces,
  193. };
  194.