Re: [Mesa3d-users] Mesa/Gallium Cell Driver 0.4 issues

[Brian P. <br...@vm...>]

Those may be run of the mill bugs in the driver.  The cell driver is 
incomplete and some things don't work properly.  The docs/cell.html 
has some status info.

-Brian

Dmitry N. Mikushin wrote:
> Brian,
> 
> I'm afraid with 0.3 I also have issues. Not that hard that with 0.4,
> but still. I tried to run Bullet physics visual demo and received
> screen with black slices. I verified that this behavior is encountered
> with mesa/gallium 7.7/0.3 turned on via LD_LIBRARY_PATH environment
> variable, and everything is OK, when it is turned off. Including two
> screenshots.
> 
> D
> 
> 2010/3/17 Brian Paul <br...@vm...>:
>> Dmitry N. Mikushin wrote:
>>> The most recent version I've found, that does not have opcode error
>>> for me is gallium 0.3 in mesa 7.7, the previous one.
>> In between other things I'm doing a bisect on the 7.8 branch to find where
>> things broke.  I'll try to fix it.
>>
>>
>>> The following
>>> question might by quiet stupid, but how can I see the performance
>>> difference between cell-gallium and general mesa? Running glxgears
>>> Enlightenment on PS3 shows around 105 FPS for both, so I really wonder
>>> what can benefit from spu acceleration, and how to see that. I'm
>>> mostly interested in boosting OpenGL.
>> First, be sure you're using the driver you expect with glxinfo (see the
>> "renderer" value).
>>
>> Be aware that SwapBuffers() is pretty slow with Cell so you'll never get
>> super high frame rates.
>>
>> Where the Cell driver shines is in non-trivial shaders.  If you compare the
>> speed of some of the demos in progs/glsl/ the Cell driver should be much
>> faster that than the other software drivers.
>>
>> -Brian
>>
>>
>>
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