I have a 1280x1024 screen and some games do not support this resolution.
For example, DeusEx support only 1280×960. When it stretches to my screen, fonts gets very hard to read and I don't get the best image quality.
Is there any way to get the black borders instead of stretching like on TVs? In the case of DeusEx that would get me 32 pixel high black lines above and bellow the game window but pixels would match. That doesn't mean playing in window, to be clear, that's still full screen.
The same goes for older games that are limited to 1024x768.