[Mesa-users] Rendering speed of OSMesa ?

[Wonwoo Lee]

Hello Brian. 

I installed OSMesa on my ubuntu machine by using 'apt-get install libosmesa6-dev'
glxinfo gives me : OpenGL version string: 2.1 Mesa 9.0.3
Regarding drivers, I have no idea because I'm not familiar with Mesa / OSMesa libraries... 
How do I check the driver I'm using ? 

Best, 
Wonwoo Lee 


> 
> On 07/08/2013 12:26 AM, Wonwoo Lee wrote:
>> Hello.
>> 
>> I tried OSMesa to render a simple scene where a textured rectangle and a
>> cylinder exist.
>> The size of render buffer was 640x480.
>> 
>> I measured execution time of rendering several times. The speed of
>> rendering seems to depend on the number of pixels occupied by an object
>> in a rendered scene. Smaller object resulted in faster speed.
> 
> That's usually how it works w/ software rendering.
> 
> 
>> My test results showed the rendering took about 20ms in average to
>> render a scene. It was much slower than I expected although it contains
>> a simple object.
>> 
>> Is this a typical speed of OSMesa rendering ?
> 
> Are you using the swrast driver?  Which version of Mesa?  I added 
> support for using llvmpipe with OSMesa a few months ago.  That would 
> give you the best performance.
> 
> -Brian

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