> you need integer scalling for what are you trying to do > official mame support this only in ddraw mode > in d3d mode (the default) you will need to use a variant of mame build which has > cleanstretch option or compile official mame with cleanstretch patch applied
I loaded openEmu on a Mac Powerbook from work just to see what it looks like (I use Windows7 at home) and I see an option called: "Zoom Level: Integral" Is this the option you are talking about?
Also, does anyone know of a pre-compiled Windows version of MAME with cleanStretch or IntegralScaling? (or whatever it's called )