sksl/shared/IntegerDivisionES3.sksl

uniform half4 colorGreen;

int exact_division(int x, int y) {
    int result = 0;
    while (x >= y) {
        ++result;
        x -= y;
    }
    return result;
}

half4 main(float2 coords) {
    int zero = int(colorGreen.r);
    int one  = int(colorGreen.g);

    for (int x = zero; x < 100; ++x) {
        for (int y = one; y < 100; ++y) {
            if ((x/y) != exact_division(x, y)) {
                return half4(1, float(x) / 255, float(y) / 255, 1);
            }
        }
    }

    return colorGreen;
}