goldberg_emulator/overlay_experimental/windows/OpenGL_Hook.h

#ifndef __INCLUDED_OPENGL_HOOK_H__
#define __INCLUDED_OPENGL_HOOK_H__

#include "../Base_Hook.h"
#ifndef NO_OVERLAY

class OpenGL_Hook : public Base_Hook
{
public:
    static constexpr const char *DLL_NAME = "opengl32.dll";

    using wglSwapBuffers_t = BOOL(WINAPI*)(HDC);

private:
    static OpenGL_Hook* _inst;

    // Variables
    bool hooked;
    bool initialized;

    // Functions
    OpenGL_Hook();

    void resetRenderState();
    void prepareForOverlay(HDC hDC);

    // Hook to render functions
    static BOOL WINAPI MywglSwapBuffers(HDC hDC);

    wglSwapBuffers_t wglSwapBuffers;

public:
    virtual ~OpenGL_Hook();

    bool start_hook();
    static OpenGL_Hook* Inst();
    virtual const char* get_lib_name() const;
    void loadFunctions(wglSwapBuffers_t pfnwglSwapBuffers);
};

#endif//NO_OVERLAY
#endif//__INCLUDED_OPENGL_HOOK_H__