1 2out vec4 sk_FragColor; 3uniform vec4 colorGreen; 4uniform vec4 colorRed; 5vec4 main() { 6 vec4 result = colorRed; 7 do { 8 vec4 _0_x = colorGreen; 9 result = _0_x; 10 } while (result != colorGreen); 11 return result; 12} 13