[vbox-dev] VirtualBox without 3D acceleration enabled vs self compiled Mesa

Michael Thayer michael.thayer at oracle.com
Tue Apr 23 02:10:05 PDT 2013

Hello Divick,

On 23/04/13 10:38, Divick Kishore wrote:
> Hi,
>      I am seeing considerable difference in performance of Mesa
> installed in VirtualBox without 3D Acceleration enabled vs self
> compiled Mesa.
> Could someone please help me understand why there is huge difference
> in s/w only rendering path with self compiled mesa vs mesa installed
> on system? Moreover the mesa renderer shown with self compiled mesa vs
> the one installed on system show different renderer. Could someone
> please explain if the Gallium on LLVM renderer is a s/w only path or
> does it utilize the GPU as well?
Do I understand correctly that you are comparing the speed of software 
rendering with a distribution-built Mesa and your own build, and that 
you are not interested in pass-through (i.e. hardware accelerated on the 
host) here?  If so then you are probably better asking the people who 
built the distribution package.

To my knowledge, the Gallium on LLVM renderer is software-only, though 
many open source GPU drivers do make use of LLVM (ours doesn't).


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