1 2out vec4 sk_FragColor; 3uniform vec4 colorGreen; 4uniform vec4 colorRed; 5vec4 main() { 6 bool ok = true; 7 ok = ok && colorGreen.y == 1.0; 8 ok = ok && colorGreen.x != 1.0; 9 ok = ok && colorGreen.yx == colorRed.xy; 10 ok = ok && colorGreen.yx == colorRed.xy; 11 ok = ok && (colorGreen.yx == colorRed.xy || colorGreen.w != colorRed.w); 12 ok = ok && (colorGreen.yx != colorRed.xy && colorGreen.w == colorRed.w); 13 return ok ? colorGreen : colorRed; 14} 15