It was mod 7 before a quick (but not quick enough) edit... Mea culpa.@chamaeleonThat's not the same as bitwise AND.
EDIT: Oh wait, misread that as mod 7 rather than mod 8.
It saysWhat syntax error do you get?
Perhaps try making your bitwise operands unsigned integers. Some drivers don't like signed bitwise logic.
Really? Even if you write them in GLSL /not es or HLSL? Damn, what hardware level does GM target? Zx spectrum?GM's shaders don't support bitwise operators, you'll need to do them manually by using multiplication/division.