//
// 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.
//

// FunctionsGL.h: Defines the FuntionsGL class to contain loaded GL functions

#ifndef LIBANGLE_RENDERER_GL_FUNCTIONSGL_H_
#define LIBANGLE_RENDERER_GL_FUNCTIONSGL_H_

#include "common/debug.h"
#include "libANGLE/Version.h"
#include "libANGLE/renderer/gl/DispatchTableGL_autogen.h"
#include "libANGLE/renderer/gl/functionsgl_enums.h"
#include "libANGLE/renderer/gl/functionsgl_typedefs.h"

namespace egl
{
class AttributeMap;
}  // namespace egl

namespace rx
{

enum StandardGL
{
    STANDARD_GL_DESKTOP,
    STANDARD_GL_ES,
};

class FunctionsGL : public DispatchTableGL
{
  public:
    FunctionsGL();
    ~FunctionsGL() override;

    void initialize(const egl::AttributeMap &displayAttributes);

    // Version information
    gl::Version version;
    StandardGL standard;
    GLint profile;
    bool isAtLeastGL(const gl::Version &glVersion) const;
    bool isAtMostGL(const gl::Version &glVersion) const;
    bool isAtLeastGLES(const gl::Version &glesVersion) const;
    bool isAtMostGLES(const gl::Version &glesVersion) const;

    // Extensions
    std::vector<std::string> extensions;
    bool hasExtension(const std::string &ext) const;
    bool hasGLExtension(const std::string &ext) const;
    bool hasGLESExtension(const std::string &ext) const;

  private:
    void *loadProcAddress(const std::string &function) const override = 0;
    void initializeStubFunctionsForNULLDriver(const std::set<std::string> &extensionSet);
};

}  // namespace rx

#endif  // LIBANGLE_RENDERER_GL_FUNCTIONSGL_H_