out vec4 sk_FragColor;
uniform mat2 testMatrix2x2;
uniform vec4 colorGreen;
uniform vec4 colorRed;
vec4 main() {
    const vec4 negativeVal = vec4(-1.0, -4.0, -16.0, -64.0);
    coords = sqrt(negativeVal).xy;
    vec4 inputVal = vec4(testMatrix2x2) + vec4(0.0, 2.0, 6.0, 12.0);
    const vec4 expected = vec4(1.0, 2.0, 3.0, 4.0);
    const vec4 allowedDelta = vec4(0.05);
    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;
}