MAMEWorld Forums - EmuChat - Re: "Dirty pixels" in MAME

> > Set prescale somewhere around 3 to 5. It's a multiplier. Start with 3 and move it
> > higher if you want it sharper. The higher the value, the more taxing it is on your
> > graphics card so you can introduce lower performance this way (especially if you're
> > using a lower end/integrated GPU).
>
> Even at prescale 5, the output is completely identical to before.
>
> Without any prescale
>
> With prescale 5

Try these settings in your mame.cfg and set the resolution to your monitor's maximum resolution:

Code:

#
# CORE RENDER OPTIONS
#
keepaspect                1
unevenstretch             1
unevenstretchx            0
intoverscan               0
intscalex                 0
intscaley                 0

#
# OSD VIDEO OPTIONS
#
video                     auto
numscreens                1
window                    0
maximize                  1
waitvsync                 1
syncrefresh               0

#
# OSD PER-WINDOW VIDEO OPTIONS
#
screen                    auto
aspect                    auto
resolution                1920x1080@60
view                      auto

#
# OSD FULL SCREEN OPTIONS
#
switchres                 0

#
# OSD ACCELERATED VIDEO OPTIONS
#
filter                    1
prescale                  3

This is how it looks for me @ 1080p on my 1080p monitor: