out vec4 sk_FragColor; uniform mat3 testMatrix3x3; uniform vec4 colorGreen; uniform vec4 colorRed; mat2 resizeMatrix_f22() { return mat2(testMatrix3x3); } vec4 main() { return resizeMatrix_f22() == mat2(1.0, 2.0, 4.0, 5.0) && mat3(resizeMatrix_f22()) == mat3(1.0, 2.0, 0.0, 4.0, 5.0, 0.0, 0.0, 0.0, 1.0) ? colorGreen : colorRed; }