Page 2 of 2

Re: GZDoom "R_OPENGL: OpenGL driver not accelerated!" Intel/

PostPosted: Sun Dec 23, 2018 2:46 am
by _mental_
What's the file you are trying to process?

Re: GZDoom "R_OPENGL: OpenGL driver not accelerated!" Intel/

PostPosted: Sat Dec 29, 2018 12:22 pm
by TheGameratorT
WTFI patcher stopped working on latest release. I patch gzdoom.exe (Vintage Build x64 3.7.0) with it but I still get the R_OpenGL error. Any fix?

EDIT: The patch is sucessful as GZDoom now sees my computer as Windows 8 instead of Windows 10, only that R_OpenGL error doesn't go away.

Re: GZDoom "R_OPENGL: OpenGL driver not accelerated!" Intel/

PostPosted: Sat Dec 29, 2018 2:12 pm
by Rachael
Can you post a screenshot of the error?

Re: GZDoom "R_OPENGL: OpenGL driver not accelerated!" Intel/

PostPosted: Sat Jan 05, 2019 9:26 pm
by Zero-ELEC
Rachael wrote:Can you post a screenshot of the error?

Hi! Not that poster, but same issue, Running Windows 10, latest (?) GZDoom release, patched so that it detects me as an older Windows, still doesn't work:

Re: GZDoom "R_OPENGL: OpenGL driver not accelerated!" Intel/

PostPosted: Sun Jan 06, 2019 3:15 pm
by Rachael
Have you tried the legacy version?

Re: GZDoom "R_OPENGL: OpenGL driver not accelerated!" Intel/

PostPosted: Mon Jan 07, 2019 2:55 pm
by Zero-ELEC
Yes, same issue.

EDIT: I've since redownloaded my GPU drivers and the issue resolved itself. Apparently Windows actually just deleted my drivers a few days back and was running everything without my graphics card... So nevermind me!

Re: GZDoom "R_OPENGL: OpenGL driver not accelerated!" Intel/

PostPosted: Thu Oct 17, 2019 11:12 am
by Esther Ninkinpit
so i was wondering if its possible to use open gl with my software (just a normal microsoft display adapter) since i wanna play brutal doom with the features of open gl

Re: GZDoom "R_OPENGL: OpenGL driver not accelerated!" Intel/

PostPosted: Thu Oct 17, 2019 11:39 am
by wildweasel
Esther Ninkinpit wrote:so i was wondering if its possible to use open gl with my software (just a normal microsoft display adapter) since i wanna play brutal doom with the features of open gl

What are your system specs?

Re: GZDoom "R_OPENGL: OpenGL driver not accelerated!" Intel/

PostPosted: Thu Oct 17, 2019 3:04 pm
by Rachael
Esther Ninkinpit wrote:so i was wondering if its possible to use open gl with my software (just a normal microsoft display adapter) since i wanna play brutal doom with the features of open gl

Possible? Maybe.

Playable? Fuck no.

You're welcome to try though.

You will need to install Mesa alongside GZDoom.
https://github.com/pal1000/mesa-dist-win/releases

I recommend grabbing the "msvc" version.

If you're using a 64-bit system, select the x64 folder and drop the dll's into GZDoom's folder. Make sure to get the "osmesa.dll" from the "osmesa-gallium" folder and drop it into the same folder too.

If you are not using a 64-bit system, then select the x86 folder instead.

*IF* you manage to get this working, set "vid_scalemode 2" in the console for best performance. That sets the lowest possible resolution for the OpenGL rasterization, which since that is being done on the CPU, you will need pretty badly. Make sure also to turn off texture filtering, do not use texture upscaling, and disable any unnecessary post-process effects, as all of those will further slow down the rendering if they are enabled.