src/mesa/state_tracker/st_atom_storagebuf.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2014 Ilia Mirkin. All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sub license, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the
  14  * next paragraph) shall be included in all copies or substantial portions
  15  * of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  20  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  21  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  22  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  23  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  *
  25  **************************************************************************/
  26
  27 #include "main/imports.h"
  28 #include "program/prog_parameter.h"
  29 #include "program/prog_print.h"
  30 #include "compiler/glsl/ir_uniform.h"
  31
  32 #include "pipe/p_context.h"
  33 #include "pipe/p_defines.h"
  34 #include "util/u_inlines.h"
  35 #include "util/u_surface.h"
  36
  37 #include "st_debug.h"
  38 #include "st_cb_bufferobjects.h"
  39 #include "st_context.h"
  40 #include "st_atom.h"
  41 #include "st_program.h"
  42
  43 static void
  44 st_bind_ssbos(struct st_context *st, struct gl_program *prog,
  45               enum pipe_shader_type shader_type)
  46 {
  47    unsigned i;
  48    struct pipe_shader_buffer buffers[MAX_SHADER_STORAGE_BUFFERS];
  49    struct gl_program_constants *c;
  50
  51    if (!prog || !st->pipe->set_shader_buffers)
  52       return;
  53
  54    c = &st->ctx->Const.Program[prog->info.stage];
  55
  56    for (i = 0; i < prog->info.num_ssbos; i++) {
  57       struct gl_shader_storage_buffer_binding *binding;
  58       struct st_buffer_object *st_obj;
  59       struct pipe_shader_buffer *sb = &buffers[i];
  60
  61       binding = &st->ctx->ShaderStorageBufferBindings[
  62             prog->sh.ShaderStorageBlocks[i]->Binding];
  63       st_obj = st_buffer_object(binding->BufferObject);
  64
  65       sb->buffer = st_obj->buffer;
  66
  67       if (sb->buffer) {
  68          sb->buffer_offset = binding->Offset;
  69          sb->buffer_size = sb->buffer->width0 - binding->Offset;
  70
  71          /* AutomaticSize is FALSE if the buffer was set with BindBufferRange.
  72           * Take the minimum just to be sure.
  73           */
  74          if (!binding->AutomaticSize)
  75             sb->buffer_size = MIN2(sb->buffer_size, (unsigned) binding->Size);
  76       }
  77       else {
  78          sb->buffer_offset = 0;
  79          sb->buffer_size = 0;
  80       }
  81    }
  82    st->pipe->set_shader_buffers(st->pipe, shader_type, c->MaxAtomicBuffers,
  83                                 prog->info.num_ssbos, buffers);
  84    /* clear out any stale shader buffers */
  85    if (prog->info.num_ssbos < c->MaxShaderStorageBlocks)
  86       st->pipe->set_shader_buffers(
  87             st->pipe, shader_type,
  88             c->MaxAtomicBuffers + prog->info.num_ssbos,
  89             c->MaxShaderStorageBlocks - prog->info.num_ssbos,
  90             NULL);
  91 }
  92
  93 void st_bind_vs_ssbos(struct st_context *st)
  94 {
  95    struct gl_program *prog =
  96       st->ctx->_Shader->CurrentProgram[MESA_SHADER_VERTEX];
  97
  98    st_bind_ssbos(st, prog, PIPE_SHADER_VERTEX);
  99 }
 100
 101 void st_bind_fs_ssbos(struct st_context *st)
 102 {
 103    struct gl_program *prog =
 104       st->ctx->_Shader->CurrentProgram[MESA_SHADER_FRAGMENT];
 105
 106    st_bind_ssbos(st, prog, PIPE_SHADER_FRAGMENT);
 107 }
 108
 109 void st_bind_gs_ssbos(struct st_context *st)
 110 {
 111    struct gl_program *prog =
 112       st->ctx->_Shader->CurrentProgram[MESA_SHADER_GEOMETRY];
 113
 114    st_bind_ssbos(st, prog, PIPE_SHADER_GEOMETRY);
 115 }
 116
 117 void st_bind_tcs_ssbos(struct st_context *st)
 118 {
 119    struct gl_program *prog =
 120       st->ctx->_Shader->CurrentProgram[MESA_SHADER_TESS_CTRL];
 121
 122    st_bind_ssbos(st, prog, PIPE_SHADER_TESS_CTRL);
 123 }
 124
 125 void st_bind_tes_ssbos(struct st_context *st)
 126 {
 127    struct gl_program *prog =
 128       st->ctx->_Shader->CurrentProgram[MESA_SHADER_TESS_EVAL];
 129
 130    st_bind_ssbos(st, prog, PIPE_SHADER_TESS_EVAL);
 131 }
 132
 133 void st_bind_cs_ssbos(struct st_context *st)
 134 {
 135    struct gl_program *prog =
 136       st->ctx->_Shader->CurrentProgram[MESA_SHADER_COMPUTE];
 137
 138    st_bind_ssbos(st, prog, PIPE_SHADER_COMPUTE);
 139 }