sksl/shared/UniformArray.sksl

uniform float testArray[5];
uniform half4 colorGreen, colorRed;

half4 main(float2 coords) {
    for (int index=0; index<5; ++index) {
        if (testArray[index] != float(index + 1)) {
            return colorRed;
        }
    }
    return colorGreen;
}