[Mesa-dev] Fwd: [Mesa-users] Issues with removal of classic OSMesa
brianp at vmware.com
Mon Jan 4 19:46:52 UTC 2021
I'm forwarding your message to the mesa-dev list for better visibility.
BTW, when you say "antialiasing" below, what exactly do you mean?
-------- Forwarded Message --------
Subject: [Mesa-users] Issues with removal of classic OSMesa
Date: Thu, 31 Dec 2020 12:56:04 +0100
From: Andreas Fänger <a.faenger at e-sign.com>
To: mesa-users at lists.freedesktop.org
I've just seen that classic OSMesa has been removed (again) from Mesa3D
a few weeks ago with this commit "mesa: Retire classic OSMesa".
We are still actively using classical OSMesa for high quality rendering
of still images in a headless environment with no GPU support
(server-based rendering on windows and linux)
Unfortunately, none of the alternative software renderers provide all
the features that we require, which is antialiasing and anisotropic
filtering. The current state is (correct me if I'm wrong)
* softpipe: anisotropic filtering is supported, no antialiasing
* llvmpipe: no anisotropic filtering, has MSAA
* openswr: no anisotropic filtering, has MSAA, no OSMesa interface (?)
We had hoped that classical OSMesa is only removed when there is a full
replacement after the discussions in 2016 when OSMesa was about to be
removed for the first time
and the commit that reverted the removal
Are there any plans to enhance the renderers so that at least one of
them is providing both anisotropic filtering and antialiasing?
As far as I know, anisotropic texture filtering is also one of the
OpenGL 4.6 requirements.
In 2016 I was told that there are only very few developers involved in
llvmpipe and that chances are not high that someone is going to port the
softpipe anisotropic filtering implementation as llvmpipe is much more
complex. Is there any change in that situation?
If there are no such plans, is there any chance of reverting this commit
again so that classical OSMesa is available for windows and linux in
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