Type Definition glu_sys::glu::PFNGLCOMPRESSEDTEXTURESUBIMAGE3DEXTPROC

type PFNGLCOMPRESSEDTEXTURESUBIMAGE3DEXTPROC = Option<unsafe extern "C" fn(texture: GLuint, target: GLenum, level: GLint, xoffset: GLint, yoffset: GLint, zoffset: GLint, width: GLsizei, height: GLsizei, depth: GLsizei, format: GLenum, imageSize: GLsizei, bits: *const c_void)>;