out vec4 sk_FragColor; uniform vec4 colorGreen; uniform vec4 colorRed; vec4 main() { int a = 0; int b = 0; int c = 0; int d = 0; a = 1; b = 2; c = 5; return ((a == 1 && b == 2) && c == 5) && d == 0 ? colorGreen : colorRed; }