bool AllocateBackingStore(int w, int h, bool force = false) override;

	void *GetVideoPointer() override;

	void ReleaseVideoPointer() override;

	void Paint() override;

	bool CreateMainWindow(uint w, uint h, uint flags) override;

private:

	void  *gl_context;  ///< OpenGL context.

	uint8 *anim_buffer; ///< Animation buffer from OpenGL back-end.

	const char *AllocateContext();

	void DestroyContext();