Screen was redrawn only after menu enter and exit about gpmd85emulator

[jose1711]

thank you for this workaround. fwiw i have experienced the same effect while testing with raspberry pi and fake kms mode.

[mborik]

Hm, strange... It looks like an issue with processing SDL_WINDOWEVENT_EXPOSED event.
Can you find out if you have OpenGL support in OS?
Could you attach here full log from ./configure & make process,
also all trace messages while emulator is running and you simulating your issue.

Meanwhile I will investigate an issue you should test forcing a software renderer in SDL2:
in file /GPMD85emu.cpp at line 72 replace SDL_RENDERER_ACCELERATED with SDL_RENDERER_SOFTWARE and recompile...

[jose1711]

This is my desktop system and it does have full OpenGL support (using Nvidia 750Ti with proprietary module). Switching to software renderer and recompiling instantly fixes the problem.

Logs from compilation (before changing line 72):
config.log
make.log

[mborik]

Great! Well, so I will add configuration parameter into default.conf which will force that software renderer and everyone will be able to set it by own. 👍

[jose1711]

Does it mean that the issue is likely caused by the proprietary Nvidia driver?

[mborik]

Yes, there is probably issue with that driver or some gtkgl adaptor, hard to say...