src/dawn_native/opengl/GLFormat.h

// 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_GLFORMAT_H_
#define DAWNNATIVE_OPENGL_GLFORMAT_H_

#include "dawn_native/Format.h"
#include "dawn_native/opengl/opengl_platform.h"

namespace dawn_native { namespace opengl {

    class Device;

    struct GLFormat {
        GLenum internalFormat = 0;
        GLenum format = 0;
        GLenum type = 0;
        bool isSupportedOnBackend = false;

        // OpenGL has different functions depending on the format component type, for example
        // glClearBufferfv is only valid on formats with the Float ComponentType
        enum ComponentType { Float, Int, Uint, DepthStencil };
        ComponentType componentType;
    };

    using GLFormatTable = std::array<GLFormat, kKnownFormatCount>;
    GLFormatTable BuildGLFormatTable();

}}  // namespace dawn_native::opengl

#endif  // DAWNNATIVE_OPENGL_GLFORMAT_H_