//
// Copyright (c) 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.
//

// DisplayWGL.h: WGL implementation of egl::Display

#ifndef LIBANGLE_RENDERER_GL_WGL_DISPLAYWGL_H_
#define LIBANGLE_RENDERER_GL_WGL_DISPLAYWGL_H_

#include "libANGLE/renderer/gl/DisplayGL.h"

#include <GL/wglext.h>

namespace rx
{

class FunctionsWGL;

class DisplayWGL : public DisplayGL
{
  public:
    DisplayWGL();
    ~DisplayWGL() override;

    egl::Error initialize(egl::Display *display) override;
    void terminate() override;

    egl::Error createWindowSurface(const egl::Config *configuration, EGLNativeWindowType window, const egl::AttributeMap &attribs,
                                   SurfaceImpl **outSurface) override;
    egl::Error createPbufferSurface(const egl::Config *configuration, const egl::AttributeMap &attribs,
                                    SurfaceImpl **outSurface) override;
    egl::Error createPbufferFromClientBuffer(const egl::Config *configuration, EGLClientBuffer shareHandle,
                                             const egl::AttributeMap &attribs, SurfaceImpl **outSurface) override;
    egl::Error createPixmapSurface(const egl::Config *configuration, NativePixmapType nativePixmap,
                                   const egl::AttributeMap &attribs, SurfaceImpl **outSurface) override;

    egl::Error makeCurrent(egl::Surface *drawSurface, egl::Surface *readSurface, gl::Context *context) override;

    egl::ConfigSet generateConfigs() const override;

    bool isDeviceLost() const override;
    bool testDeviceLost() override;
    egl::Error restoreLostDevice() override;

    bool isValidNativeWindow(EGLNativeWindowType window) const override;

    std::string getVendorString() const override;

  private:
    DISALLOW_COPY_AND_ASSIGN(DisplayWGL);

    const FunctionsGL *getFunctionsGL() const override;

    void generateExtensions(egl::DisplayExtensions *outExtensions) const override;
    void generateCaps(egl::Caps *outCaps) const override;

    HMODULE mOpenGLModule;
    GLuint mGLVersionMajor;
    GLuint mGLVersionMinor;

    FunctionsWGL *mFunctionsWGL;
    FunctionsGL *mFunctionsGL;

    ATOM mWindowClass;
    HWND mWindow;
    HDC mDeviceContext;
    int mPixelFormat;
    HGLRC mWGLContext;

    egl::Display *mDisplay;
};

}

#endif // LIBANGLE_RENDERER_GL_WGL_DISPLAYWGL_H_
