Engine: If 8-bpp mode couldn't be initialized using GL, retry without GL (sdlayer.cpp).
The motivation behind this was making EDuke32-based ports (including NetDuke32) usable on VMs for which it can be difficult or impossible to enable appropriate OpenGL support, without the need to build a separate exe.
I want to see if I missed anything in the code, and also if anyone with a relevant VM can test this.
Edited by NY00123