src/mesa/main/compute.c

   1 /*
   2  * Copyright © 2014 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  21  * DEALINGS IN THE SOFTWARE.
  22  */
  23
  24 #include "glheader.h"
  25 #include "compute.h"
  26 #include "context.h"
  27
  28 void GLAPIENTRY
  29 _mesa_DispatchCompute(GLuint num_groups_x,
  30                       GLuint num_groups_y,
  31                       GLuint num_groups_z)
  32 {
  33    GET_CURRENT_CONTEXT(ctx);
  34    int i;
  35    struct gl_shader_program *prog;
  36    const GLuint num_groups[3] = { num_groups_x, num_groups_y, num_groups_z };
  37
  38    if (ctx->Extensions.ARB_compute_shader) {
  39       for (i = 0; i < 3; i++) {
  40          if (num_groups[i] > ctx->Const.MaxComputeWorkGroupCount[i]) {
  41             _mesa_error(ctx, GL_INVALID_VALUE,
  42                         "glDispatchCompute(num_groups_%c)", 'x' + i);
  43             return;
  44          }
  45       }
  46       if (!_mesa_valid_to_render(ctx, "glDispatchCompute"))
  47          return;
  48       prog = ctx->Shader.CurrentProgram[MESA_SHADER_COMPUTE];
  49       if (prog == NULL || prog->_LinkedShaders[MESA_SHADER_COMPUTE] == NULL) {
  50          _mesa_error(ctx, GL_INVALID_OPERATION,
  51                      "glDispatchCompute(no active compute shader)");
  52          return;
  53       }
  54       ctx->Driver.DispatchCompute(ctx, num_groups);
  55    } else {
  56       _mesa_error(ctx, GL_INVALID_OPERATION,
  57                   "unsupported function (glDispatchCompute) called");
  58    }
  59 }
  60
  61 extern void GLAPIENTRY
  62 _mesa_DispatchComputeIndirect(GLintptr indirect)
  63 {
  64    GET_CURRENT_CONTEXT(ctx);
  65
  66    if (ctx->Extensions.ARB_compute_shader) {
  67       assert(!"TODO");
  68    } else {
  69       _mesa_error(ctx, GL_INVALID_OPERATION,
  70                   "unsupported function (glDispatchComputeIndirect) called");
  71    }
  72 }