src/gpu/command_buffer/service/shader_translator_cache.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "gpu/command_buffer/service/shader_translator_cache.h"
   6
   7 namespace gpu {
   8 namespace gles2 {
   9
  10 ShaderTranslatorCache* ShaderTranslatorCache::GetInstance() {
  11   return Singleton<ShaderTranslatorCache>::get();
  12 }
  13
  14 ShaderTranslatorCache::ShaderTranslatorCache() {
  15 }
  16
  17 ShaderTranslatorCache::~ShaderTranslatorCache() {
  18 }
  19
  20 void ShaderTranslatorCache::OnDestruct(ShaderTranslator* translator) {
  21   Cache::iterator it = cache_.begin();
  22   while (it != cache_.end()) {
  23     if (it->second == translator) {
  24       cache_.erase(it);
  25       return;
  26     }
  27     it++;
  28   }
  29 }
  30
  31 scoped_refptr<ShaderTranslator> ShaderTranslatorCache::GetTranslator(
  32     ShShaderType shader_type,
  33     ShShaderSpec shader_spec,
  34     const ShBuiltInResources* resources,
  35     ShaderTranslatorInterface::GlslImplementationType
  36         glsl_implementation_type,
  37     ShCompileOptions driver_bug_workarounds) {
  38   ShaderTranslatorInitParams params(shader_type,
  39                                     shader_spec,
  40                                     *resources,
  41                                     glsl_implementation_type,
  42                                     driver_bug_workarounds);
  43
  44   Cache::iterator it = cache_.find(params);
  45   if (it != cache_.end())
  46     return it->second;
  47
  48   ShaderTranslator* translator = new ShaderTranslator();
  49   if (translator->Init(shader_type, shader_spec, resources,
  50                        glsl_implementation_type,
  51                        driver_bug_workarounds)) {
  52     cache_[params] = translator;
  53     translator->AddDestructionObserver(this);
  54     return translator;
  55   } else {
  56     return NULL;
  57   }
  58 }
  59
  60 }  // namespace gles2
  61 }  // namespace gpu