1 2out vec4 sk_FragColor; 3uniform mat3 testMatrix3x3; 4uniform vec4 colorGreen; 5uniform vec4 colorRed; 6vec4 main() { 7 const vec3 expected1 = vec3(-3.0, 6.0, -3.0); 8 const vec3 expected2 = vec3(6.0, -12.0, 6.0); 9 return cross(testMatrix3x3[0], testMatrix3x3[1]) == expected1 && cross(testMatrix3x3[2], testMatrix3x3[0]) == expected2 ? colorGreen : colorRed; 10} 11