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      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_bitmap.h"
     32 #include "st_cb_bufferobjects.h"
     33 #include "st_cb_compute.h"
     34 
     35 #include "pipe/p_context.h"
     36 
     37 static void st_dispatch_compute_common(struct gl_context *ctx,
     38                                        const GLuint *num_groups,
     39                                        const GLuint *group_size,
     40                                        struct pipe_resource *indirect,
     41                                        GLintptr indirect_offset)
     42 {
     43    struct gl_shader_program *prog =
     44       ctx->_Shader->CurrentProgram[MESA_SHADER_COMPUTE];
     45    struct st_context *st = st_context(ctx);
     46    struct pipe_context *pipe = st->pipe;
     47    struct pipe_grid_info info = { 0 };
     48 
     49    st_flush_bitmap_cache(st);
     50    st_invalidate_readpix_cache(st);
     51 
     52    if (ctx->NewState)
     53       _mesa_update_state(ctx);
     54 
     55    if ((st->dirty | ctx->NewDriverState) & ST_PIPELINE_COMPUTE_STATE_MASK ||
     56        st->compute_shader_may_be_dirty)
     57       st_validate_state(st, ST_PIPELINE_COMPUTE);
     58 
     59    for (unsigned i = 0; i < 3; i++) {
     60       info.block[i] = group_size ? group_size[i] : prog->Comp.LocalSize[i];
     61       info.grid[i]  = num_groups ? num_groups[i] : 0;
     62    }
     63 
     64    if (indirect) {
     65       info.indirect = indirect;
     66       info.indirect_offset = indirect_offset;
     67    }
     68 
     69    pipe->launch_grid(pipe, &info);
     70 }
     71 
     72 static void st_dispatch_compute(struct gl_context *ctx,
     73                                 const GLuint *num_groups)
     74 {
     75    st_dispatch_compute_common(ctx, num_groups, NULL, NULL, 0);
     76 }
     77 
     78 static void st_dispatch_compute_indirect(struct gl_context *ctx,
     79                                          GLintptr indirect_offset)
     80 {
     81    struct gl_buffer_object *indirect_buffer = ctx->DispatchIndirectBuffer;
     82    struct pipe_resource *indirect = st_buffer_object(indirect_buffer)->buffer;
     83 
     84    st_dispatch_compute_common(ctx, NULL, NULL, indirect, indirect_offset);
     85 }
     86 
     87 static void st_dispatch_compute_group_size(struct gl_context *ctx,
     88                                            const GLuint *num_groups,
     89                                            const GLuint *group_size)
     90 {
     91    st_dispatch_compute_common(ctx, num_groups, group_size, NULL, 0);
     92 }
     93 
     94 void st_init_compute_functions(struct dd_function_table *functions)
     95 {
     96    functions->DispatchCompute = st_dispatch_compute;
     97    functions->DispatchComputeIndirect = st_dispatch_compute_indirect;
     98    functions->DispatchComputeGroupSize = st_dispatch_compute_group_size;
     99 }
    100