GZDoom "R_OPENGL: OpenGL driver not accelerated!" Intel/w10

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Contrary to popular belief, we are not all-knowing-all-seeing magical beings!

If you want help you're going to have to provide lots of info. Like what is your hardware, what is your operating system, what version of GZDoom/LZDoom/whatever you're using, what mods you're loading, how you're loading it, what you've already tried for fixing the problem, and anything else that is even remotely relevant to the problem.

We can't magically figure out what it is if you're going to be vague, and if we feel like you're just wasting our time with guessing games we will act like that's what you're really doing and won't help you.
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Re: GZDoom "R_OPENGL: OpenGL driver not accelerated!" Intel/

Post by _mental_ »

What's the file you are trying to process?
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TheGameratorT
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Re: GZDoom "R_OPENGL: OpenGL driver not accelerated!" Intel/

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

Post by Rachael »

Can you post a screenshot of the error?
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Zero-ELEC
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Re: GZDoom "R_OPENGL: OpenGL driver not accelerated!" Intel/

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

Post by Rachael »

Have you tried the legacy version?
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Zero-ELEC
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Re: GZDoom "R_OPENGL: OpenGL driver not accelerated!" Intel/

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

Post by Guest »

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

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

Post 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.
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Tc_667
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Re: GZDoom "R_OPENGL: OpenGL driver not accelerated!" Intel/

Post by Tc_667 »

Obyously, you must update your opengl drivers. But that requires knowlegde beforehand, you must identify which OS and what graphics card are installed, then, get the update from the website of your graphics card, and now you should probably be able to play.

https://downloadcenter.intel.com/ for intel
https://www.nvidia.com/Download/index.aspx for nvidia
https://www.amd.com/en/support for AMD

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

Post by Guest »

hey can you do an updated version of this? because I'm using gzdoom and it works but i want to make the graphics look better and when i try to it just says " have least opengl3.3.dll" so please help me out
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Re: GZDoom "R_OPENGL: OpenGL driver not accelerated!" Intel/

Post by Graf Zahl »

If it says that your graphics hardware is too old to be supported.
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Re: GZDoom "R_OPENGL: OpenGL driver not accelerated!" Intel/

Post by Gez »

Try LZDoom instead.
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Re: GZDoom "R_OPENGL: OpenGL driver not accelerated!" Intel/

Post by Plasmazippo »

I know this is a bit of an old topic, but thank you! :D My GPU burned out and I was forced to downgrade*, and without this fix I'd be totally unable to play. It works for v4.7.1 perfectly fine.

*: if anyone is on a shoestring budget and end up with a Radeon R7 series, this is the fix you need

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