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//
// Copyright 2015 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// ExtensionGLSL.h: Defines the TExtensionGLSL class that tracks GLSL extension requirements of
// shaders.
#ifndef COMPILER_TRANSLATOR_EXTENSIONGLSL_H_
#define COMPILER_TRANSLATOR_EXTENSIONGLSL_H_
#include <set>
#include <string>
#include "compiler/translator/tree_util/IntermTraverse.h"
namespace sh
{
// Traverses the intermediate tree to determine which GLSL extensions are required
// to support the shader.
class TExtensionGLSL : public TIntermTraverser
{
public:
TExtensionGLSL(ShShaderOutput output);
const std::set<std::string> &getEnabledExtensions() const;
const std::set<std::string> &getRequiredExtensions() const;
bool visitUnary(Visit visit, TIntermUnary *node) override;
bool visitAggregate(Visit visit, TIntermAggregate *node) override;
private:
void checkOperator(TIntermOperator *node);
int mTargetVersion;
std::set<std::string> mEnabledExtensions;
std::set<std::string> mRequiredExtensions;
};
} // namespace sh
#endif // COMPILER_TRANSLATOR_EXTENSIONGLSL_H_
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