src/mesa/state_tracker/st_cb_compute.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2016 Samuel Pitoiset
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * 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, sub license, 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 portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include "main/state.h"
  29 #include "st_atom.h"
  30 #include "st_context.h"
  31 #include "st_cb_bufferobjects.h"
  32 #include "st_cb_compute.h"
  33
  34 #include "pipe/p_context.h"
  35
  36 static void st_dispatch_compute_common(struct gl_context *ctx,
  37                                        const GLuint *num_groups,
  38                                        struct pipe_resource *indirect,
  39                                        GLintptr indirect_offset)
  40 {
  41    struct gl_shader_program *prog =
  42       ctx->_Shader->CurrentProgram[MESA_SHADER_COMPUTE];
  43    struct st_context *st = st_context(ctx);
  44    struct pipe_context *pipe = st->pipe;
  45    struct pipe_grid_info info = {};
  46
  47    if (ctx->NewState)
  48       _mesa_update_state(ctx);
  49
  50    if (st->dirty_cp.st || ctx->NewDriverState)
  51       st_validate_state(st, ST_PIPELINE_COMPUTE);
  52
  53    for (unsigned i = 0; i < 3; i++) {
  54       info.block[i] = prog->Comp.LocalSize[i];
  55       info.grid[i]  = num_groups ? num_groups[i] : 0;
  56    }
  57
  58    if (indirect) {
  59       info.indirect = indirect;
  60       info.indirect_offset = indirect_offset;
  61    }
  62
  63    pipe->launch_grid(pipe, &info);
  64 }
  65
  66 static void st_dispatch_compute(struct gl_context *ctx,
  67                                 const GLuint *num_groups)
  68 {
  69    st_dispatch_compute_common(ctx, num_groups, NULL, 0);
  70 }
  71
  72 static void st_dispatch_compute_indirect(struct gl_context *ctx,
  73                                          GLintptr indirect_offset)
  74 {
  75    struct gl_buffer_object *indirect_buffer = ctx->DispatchIndirectBuffer;
  76    struct pipe_resource *indirect = st_buffer_object(indirect_buffer)->buffer;
  77
  78    st_dispatch_compute_common(ctx, NULL, indirect, indirect_offset);
  79 }
  80
  81 void st_init_compute_functions(struct dd_function_table *functions)
  82 {
  83    functions->DispatchCompute = st_dispatch_compute;
  84    functions->DispatchComputeIndirect = st_dispatch_compute_indirect;
  85 }