pub type PFNGLASYNCCOPYIMAGESUBDATANVXPROC = Option<unsafe extern "C" fn(waitSemaphoreCount: GLsizei, waitSemaphoreArray: *const GLuint, waitValueArray: *const GLuint64, srcGpu: GLuint, dstGpuMask: GLbitfield, srcName: GLuint, srcTarget: GLenum, srcLevel: GLint, srcX: GLint, srcY: GLint, srcZ: GLint, dstName: GLuint, dstTarget: GLenum, dstLevel: GLint, dstX: GLint, dstY: GLint, dstZ: GLint, srcWidth: GLsizei, srcHeight: GLsizei, srcDepth: GLsizei, signalSemaphoreCount: GLsizei, signalSemaphoreArray: *const GLuint, signalValueArray: *const GLuint64) -> GLuint>;