[Mesa-users] llvmpipe regression in supported shading language version

[Rob Conde]

To close the loop on this:

  *   llvmpipe on redhat only supported OpenGL 2.1 because a required feature of 3 was patented. However it still reported/supported GLSL 1.30.
  *   Later this was seen as incorrect and corrected (not sure if this was on the mesa side or the redhat side)
  *   This patent later expired and OpenGL 3+ can now be supported, but this was after Redhat 7 was locked for new features.

Thanks,
Rob
________________________________
From: Rob Conde <rob.conde at ai-solutions.com>
Sent: Tuesday, February 23, 2021 2:34 PM
To: Brian Paul <brianp at vmware.com>; mesa-users at lists.freedesktop.org <mesa-users at lists.freedesktop.org>
Subject: Re: [Mesa-users] llvmpipe regression in supported shading language version

I created this issue:
https://bugzilla.redhat.com/show_bug.cgi?id=1932022

Brian...can you say whether this could affect all OpenGL drivers or just llvmpipe?

Thanks,
Rob
________________________________
From: Rob Conde <rob.conde at ai-solutions.com>
Sent: Tuesday, February 23, 2021 11:44 AM
To: Brian Paul <brianp at vmware.com>; mesa-users at lists.freedesktop.org <mesa-users at lists.freedesktop.org>
Subject: Re: [Mesa-users] llvmpipe regression in supported shading language version

I built both 20.3.4 and 18.3.4 from source...and the problem isn't there in either. I'm not familiar with how redhat builds their packages - I assume they are using a build setting which started having this effect at some point. Not sure the right path towards getting that resolved.

Rob
________________________________
From: Brian Paul <brianp at vmware.com>
Sent: Monday, February 22, 2021 6:25 PM
To: Rob Conde <rob.conde at ai-solutions.com>; mesa-users at lists.freedesktop.org <mesa-users at lists.freedesktop.org>
Subject: Re: [Mesa-users] llvmpipe regression in supported shading language version

On 2/22/21 4:17 PM, Rob Conde wrote:
> I recently upgraded a redhat linux machine which changed the version of
> mesa from 18.0.5 to 18.3.4. glxinfo is showing that at the same time the
> "OpenGL shading language version string" changed from 1.30 to 1.20. Is
> this intended? I couldn't find any mention in the release notes.
>
> Thanks,
> Rob Conde


Hi Rob,

I don't know about this particular issue, but could you try a more
recent release (like 20.x)?

Otherwise, I'll forward your question to the mesa-dev list where there's
a wider audience of developers.

-Brian

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