1 2out vec4 sk_FragColor; 3uniform vec4 N; 4uniform vec4 I; 5uniform vec4 NRef; 6uniform vec4 colorGreen; 7uniform vec4 colorRed; 8vec4 main() { 9 vec4 expectedPos = vec4(1.0, 2.0, 3.0, 4.0); 10 vec4 expectedNeg = vec4(-1.0, -2.0, -3.0, -4.0); 11 return ((((((faceforward(N.x, I.x, NRef.x) == expectedNeg.x && faceforward(N.xy, I.xy, NRef.xy) == expectedNeg.xy) && faceforward(N.xyz, I.xyz, NRef.xyz) == expectedPos.xyz) && faceforward(N, I, NRef) == expectedPos) && -1.0 == expectedNeg.x) && vec2(-1.0, -2.0) == expectedNeg.xy) && vec3(1.0, 2.0, 3.0) == expectedPos.xyz) && vec4(1.0, 2.0, 3.0, 4.0) == expectedPos ? colorGreen : colorRed; 12} 13