1 2out vec4 sk_FragColor; 3uniform mat2 testMatrix2x2; 4uniform vec4 colorGreen; 5uniform vec4 colorRed; 6vec4 main() { 7 const vec4 negativeVal = vec4(-1.0, -4.0, -16.0, -64.0); 8 coords = sqrt(negativeVal).xy; 9 vec4 inputVal = vec4(testMatrix2x2) + vec4(0.0, 2.0, 6.0, 12.0); 10 const vec4 expected = vec4(1.0, 2.0, 3.0, 4.0); 11 const vec4 allowedDelta = vec4(0.05); 12 return ((abs(sqrt(inputVal.x) - 1.0) < 0.05 && all(lessThan(abs(sqrt(inputVal.xy) - vec2(1.0, 2.0)), vec2(0.05)))) && all(lessThan(abs(sqrt(inputVal.xyz) - vec3(1.0, 2.0, 3.0)), vec3(0.05)))) && all(lessThan(abs(sqrt(inputVal) - expected), allowedDelta)) ? colorGreen : colorRed; 13} 14