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When I play MS-DOS games that were installed via PlayOnLinux, they are displayed full-screen, however the resolution is low - the game displays in a small box, in the middle of the screen with a black border surrounding it...

How do I increase the resolution, so that these games fill the entire display?

One of the games is a native MS-DOS game, the rest are GOG.com (Good Old Games) ports)...

That's a limitation of the hq2x scaler I used in the scripts:
http://www.playonmac.com/en/topic-11185-Elder_Scrolls_II_Daggerfall.html

http://www.vogons.org/viewtopic.php?f=32&t=35674:
"I think it's done since, with the exception of the normal and advmame scalers, any other scalers assumes an RGB color space (or similar) is used. Things are a bit different with output=opengl(nb), and with output=overlay the color space is quite far from RGBA."

(related: http://www.playonmac.com/en/issue-3279.html)

Edited by petch

Normally what I do is change the resolution of my Linux desktop to match the game.
I had no idea there was a "scaler". So is the scaler in PlayOnLinux, Wine or DosBox?
I'm a little confused on that part...

DOSBox scaler, in this case:

http://www.dosbox.com/wiki/Scaler

Wow, I had no idea. Now I want to try a Dos game and see how it looks.
Thanks