I got curious if flat modifier affect performance on Mali devices or not.Doesn't matter if I put it into shader or not - result from Mali Offline Compiler is exactly the same.In theory not doing interpolation might make things faster but I don't see any reduction in cycles.Should I have it as potential optimization or not? I stumbled in some old report where it was even slower (on desktop PC using ANGLE emulation)
No, it shouldn't impact performance or memory footprint on Mali.