glCopyTexSubImage2D(_:_:_:_:_:_:_:_:)
Declaration
func glCopyTexSubImage2D(_ target: GLenum, _ level: GLint, _ xoffset: GLint, _ yoffset: GLint, _ x: GLint, _ y: GLint, _ width: GLsizei, _ height: GLsizei)func glCopyTexSubImage2D(_ target: GLenum, _ level: GLint, _ xoffset: GLint, _ yoffset: GLint, _ x: GLint, _ y: GLint, _ width: GLsizei, _ height: GLsizei)