[Mesa-dev] multiple versions in version string
tfogal at sci.utah.edu
Mon Jun 20 12:01:46 PDT 2011
Gustaw Smolarczyk <wielkiegie at gmail.com> writes:
> Isn't that version because it uses indirect rendering? AFAIK indirect
> limits GL version to 1.4. There is the version of X's AIGLX driver in
> parentheses, but only 1.4 features can be used.
Ahh, this is the type of caveat I was hoping to hear ;)
> But it may not be the case here. Could you check wheter glxinfo says
> that direct rendering is enabled?
You are correct, rendering is indirect! I was unaware that direct vs.
indirect limited *GL* features. Why is that the case, and what can be
done? I'm just using swrast right now, maybe softpipe in the future;
I'm obviously not concerned with speed, I just need something that
supports some extensions for use in a regression testing system.
> 2011/6/20 tom fogal <tfogal at sci.utah.edu>:
> > I am trying to get some regression tests to run in Xvfb. =C2=A0On my
> > workstation, the GL_VERSION string from this is:
> > =C2=A01.4 (2.1 Mesa 7.7.1)
> > according to glxinfo. =C2=A0The extensions fairly clearly show 2.x featur=
> > Is it perhaps the case that 2.1 features were available in 7.7.1, but
> > not /all/ 2.1 features, and thus this was labelled incorrectly? =C2=A0The
> > version string seems "fixed" in more modern versions.
> > In any case, the above version string breaks projects like GLEW
> > -- one application I have breaks because GLEW doesn't try to load
> > glGenBuffers, thinking it will not be there. =C2=A0A string like the abov=
> > suggests that GLEW should just try to load whatever it can, and just
> > ignore the version string from the library.
> > Thoughts?
> > -tom
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