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    if (!prog || !st->pipe->set_shader_buffers)
  50       return;
  51
  52    for (i = 0; i < prog->info.num_ssbos; i++) {
  53       struct gl_buffer_binding *binding;
  54       struct st_buffer_object *st_obj;
  55       struct pipe_shader_buffer *sb = &buffers[i];
  56
  57       binding = &st->ctx->ShaderStorageBufferBindings[
  58             prog->sh.ShaderStorageBlocks[i]->Binding];
  59       st_obj = st_buffer_object(binding->BufferObject);
  60
  61       sb->buffer = st_obj->buffer;
  62
  63       if (sb->buffer) {
  64          sb->buffer_offset = binding->Offset;
  65          sb->buffer_size = sb->buffer->width0 - binding->Offset;
  66
  67          /* AutomaticSize is FALSE if the buffer was set with BindBufferRange.
  68           * Take the minimum just to be sure.
  69           */
  70          if (!binding->AutomaticSize)
  71             sb->buffer_size = MIN2(sb->buffer_size, (unsigned) binding->Size);
  72       }
  73       else {
  74          sb->buffer_offset = 0;
  75          sb->buffer_size = 0;
  76       }
  77    }
  78    st->pipe->set_shader_buffers(st->pipe, shader_type, 0,
  79                                 prog->info.num_ssbos, buffers,
  80                                 prog->sh.ShaderStorageBlocksWriteAccess);
  81
  82    /* Clear out any stale shader buffers (or lowered atomic counters). */
  83    int num_ssbos = prog->info.num_ssbos;
  84    if (!st->has_hw_atomics)
  85       num_ssbos += st->last_used_atomic_bindings[shader_type];
  86    if (st->last_num_ssbos[shader_type] > num_ssbos) {
  87       st->pipe->set_shader_buffers(
  88             st->pipe, shader_type,
  89             num_ssbos,
  90             st->last_num_ssbos[shader_type] - num_ssbos,
  91             NULL, 0);
  92       st->last_num_ssbos[shader_type] = num_ssbos;
  93    }
  94 }
  95
  96 void st_bind_vs_ssbos(struct st_context *st)
  97 {
  98    struct gl_program *prog =
  99       st->ctx->_Shader->CurrentProgram[MESA_SHADER_VERTEX];
 100
 101    st_bind_ssbos(st, prog, PIPE_SHADER_VERTEX);
 102 }
 103
 104 void st_bind_fs_ssbos(struct st_context *st)
 105 {
 106    struct gl_program *prog =
 107       st->ctx->_Shader->CurrentProgram[MESA_SHADER_FRAGMENT];
 108
 109    st_bind_ssbos(st, prog, PIPE_SHADER_FRAGMENT);
 110 }
 111
 112 void st_bind_gs_ssbos(struct st_context *st)
 113 {
 114    struct gl_program *prog =
 115       st->ctx->_Shader->CurrentProgram[MESA_SHADER_GEOMETRY];
 116
 117    st_bind_ssbos(st, prog, PIPE_SHADER_GEOMETRY);
 118 }
 119
 120 void st_bind_tcs_ssbos(struct st_context *st)
 121 {
 122    struct gl_program *prog =
 123       st->ctx->_Shader->CurrentProgram[MESA_SHADER_TESS_CTRL];
 124
 125    st_bind_ssbos(st, prog, PIPE_SHADER_TESS_CTRL);
 126 }
 127
 128 void st_bind_tes_ssbos(struct st_context *st)
 129 {
 130    struct gl_program *prog =
 131       st->ctx->_Shader->CurrentProgram[MESA_SHADER_TESS_EVAL];
 132
 133    st_bind_ssbos(st, prog, PIPE_SHADER_TESS_EVAL);
 134 }
 135
 136 void st_bind_cs_ssbos(struct st_context *st)
 137 {
 138    struct gl_program *prog =
 139       st->ctx->_Shader->CurrentProgram[MESA_SHADER_COMPUTE];
 140
 141    st_bind_ssbos(st, prog, PIPE_SHADER_COMPUTE);
 142 }