1layout(location=0) out float defaultVarying; 2layout(location=1) out noperspective float linearVarying; 3layout(location=2) out flat float flatVarying; 4 5void main() { 6 defaultVarying = 1.0; 7 linearVarying = 2.0; 8 flatVarying = 3.0; 9} 10