Function gl::BlitNamedFramebuffer

pub unsafe fn BlitNamedFramebuffer(readFramebuffer: GLuint,
                                   drawFramebuffer: GLuint,
                                   srcX0: GLint,
                                   srcY0: GLint,
                                   srcX1: GLint,
                                   srcY1: GLint,
                                   dstX0: GLint,
                                   dstY0: GLint,
                                   dstX1: GLint,
                                   dstY1: GLint,
                                   mask: GLbitfield,
                                   filter: GLenum)