> BTW does someone think it makes sense to propose to include scaler support like this
> into standard MAME? I'm new to the MAME-dev scene, but from what I see in forum posts
> it seems, there are some ideologic debates about whether it is heresy to scale pixels
> or not. Given that it has taken me only about a week to include scaling support makes
> me wonder why standard MAME doesn't offer it as an option at least.
These scaling methods do not attempt to simulate the appearance of real arcade machines in any way (as e.g. MAME's HLSL framework does with the scanlines, phosphor triads, CRT curvature, etc, etc) so we are not interested. If you want to pretend arcade games looked like something they didn't that's your prerogative but MAMEdev is not in that business.