1 files changed, 62 insertions, 0 deletions
diff --git a/chromium/gpu/command_buffer/service/shader_translator_cache.cc b/chromium/gpu/command_buffer/service/shader_translator_cache.cc
new file mode 100644
index 00000000000..6e888d56c98
--- /dev/null
+++ b/chromium/gpu/command_buffer/service/shader_translator_cache.cc
@@ -0,0 +1,62 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "gpu/command_buffer/service/shader_translator_cache.h"
+
+namespace gpu {
+namespace gles2 {
+
+ShaderTranslatorCache* ShaderTranslatorCache::GetInstance() {
+  return Singleton<ShaderTranslatorCache>::get();
+}
+
+ShaderTranslatorCache::ShaderTranslatorCache() {
+}
+
+ShaderTranslatorCache::~ShaderTranslatorCache() {
+}
+
+void ShaderTranslatorCache::OnDestruct(ShaderTranslator* translator) {
+  Cache::iterator it = cache_.begin();
+  while (it != cache_.end()) {
+    if (it->second == translator) {
+      cache_.erase(it);
+      return;
+    }
+    it++;
+  }
+}
+
+scoped_refptr<ShaderTranslator> ShaderTranslatorCache::GetTranslator(
+    ShShaderType shader_type,
+    ShShaderSpec shader_spec,
+    const ShBuiltInResources* resources,
+    ShaderTranslatorInterface::GlslImplementationType
+        glsl_implementation_type,
+    ShaderTranslatorInterface::GlslBuiltInFunctionBehavior
+        glsl_built_in_function_behavior) {
+  ShaderTranslatorInitParams params(shader_type,
+                                    shader_spec,
+                                    *resources,
+                                    glsl_implementation_type,
+                                    glsl_built_in_function_behavior);
+
+  Cache::iterator it = cache_.find(params);
+  if (it != cache_.end())
+    return it->second;
+
+  ShaderTranslator* translator = new ShaderTranslator();
+  if (translator->Init(shader_type, shader_spec, resources,
+                       glsl_implementation_type,
+                       glsl_built_in_function_behavior)) {
+    cache_[params] = translator;
+    translator->AddDestructionObserver(this);
+    return translator;
+  } else {
+    return NULL;
+  }
+}
+
+}  // namespace gles2
+}  // namespace gpu