Yesterday I upgraded my OS to Windows 10, including the various OS software updates. Since then, I am unable to run GZDooM, which refuses to open; I get the following error message:
R_OPENGL: OpenGL Driver Not Accelerated!
I am running v4.3.3 of GZDooM, and I have DirectX 12.
My guess is, that when I upgraded to Windows 10, the OpenGL drivers got messed up. I did some internet searches for how to determine my version of OpenGL (including here, on the ZDooM forums), and they all require installing 3rd party software, which I want to avoid if possible.
Incidentally, today I downloaded and tried to install the following updates, in the hope that the relevant drivers would be installed:
kb4537572-cumulative-update-for-net-framework, Feb 27 (failed to install)
kb4541335-windows-10-update, Mar 24 (failed to install)
Should I search specifically for the OpenGL drivers I need (e.g., v3.3) and install them? I'm curious why a Windows update wouldn't work.