pub type PFNGLVIEWPORTSWIZZLENVPROC = Option<unsafe extern "C" fn(index: GLuint, swizzlex: GLenum, swizzley: GLenum, swizzlez: GLenum, swizzlew: GLenum)>;Aliased Type§
enum PFNGLVIEWPORTSWIZZLENVPROC {
None,
Some(unsafe extern "C" fn(_: u32, _: u32, _: u32, _: u32, _: u32)),
}