// Copyright 2019 The Dawn Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#ifndef DAWNNATIVE_OPENGL_OPENGLFUNCTIONS_H_
#define DAWNNATIVE_OPENGL_OPENGLFUNCTIONS_H_

#include <unordered_set>

#include "dawn_native/opengl/OpenGLFunctionsBase_autogen.h"

namespace dawn_native { namespace opengl {

    struct OpenGLFunctions : OpenGLFunctionsBase {
      public:
        MaybeError Initialize(GetProcAddress getProc);

        bool IsAtLeastGL(uint32_t majorVersion, uint32_t minorVersion) const;
        bool IsAtLeastGLES(uint32_t majorVersion, uint32_t minorVersion) const;

        bool IsGLExtensionSupported(const char* extension) const;

      private:
        void InitializeSupportedGLExtensions();

        uint32_t mMajorVersion;
        uint32_t mMinorVersion;

        enum class Standard {
            Desktop,
            ES,
        };
        Standard mStandard;

        std::unordered_set<std::string> mSupportedGLExtensionsSet;
    };

}}  // namespace dawn_native::opengl

#endif  // DAWNNATIVE_OPENGL_OPENGLFUNCTIONS_H_