Function gl::ClearTexSubImage

pub unsafe fn ClearTexSubImage(texture: GLuint,
                               level: GLint,
                               xoffset: GLint,
                               yoffset: GLint,
                               zoffset: GLint,
                               width: GLsizei,
                               height: GLsizei,
                               depth: GLsizei,
                               format: GLenum,
                               type_: GLenum,
                               data: *const c_void)