First post, by truth_deleted
There are two options for fullresolution while output=openglnb: desktop or original. Original is typically the low resolution source, while fullresolution=desktop scales a high quality image to full screen. This is an ideal configuration for DOS/VGA games and especially for Win95 games. However, the image was not scaling while running a 95 guest nor games inside the guest; instead the image appeared as a small window on a black background.
Attached is a patch against DOSBox 0.74/SVN to fix this issue. I can now run Win9x games inside DOSBox and have a high quality fullscreen image (fullresolution=desktop). This patch should also work for DOS games which do not scale to fullscreen while fullresolution=desktop. It's a minor edit to code, but consider it a test patch until its compatibility is verified.