pub type PFNGLDRAWTRANSFORMFEEDBACKINSTANCEDPROC = Option<unsafe extern "C" fn(mode: GLenum, id: GLuint, primcount: GLsizei)>;Aliased Type§
enum PFNGLDRAWTRANSFORMFEEDBACKINSTANCEDPROC {
None,
Some(unsafe extern "C" fn(_: u32, _: u32, _: i32)),
}