Hi John,

I don't have an answer right OTTOMH, but the 10.5.3 update might make  
a difference ( it was a major update )
Assume your results with SimpleBlocks demo are FB-compiled and not  
FBtoC-compiled. Right.

I'm still new to 10.5.3 ( and 10.5 in general ), so I can't offer any  
suggestions. If not for the purchase of a new iMac a few weeks ago, I  
probably would have delayed my upgrade to 10.5.

Brian S


On Jun 8, 2008, at 9:23 AM, John Grimsley wrote:

> Hello out there,
>
> When I upgraded from OS X 10.3.9 to 10.5.2, the frame rate of my  
> OpenGL app dropped in half.  This is an FB question but may also  
> apply to FBtoC.  I don't have 10.4 access on the same machine.
>
> When I compile the SimpleBlocks Demo and just launch it, I get 140+  
> fps under 10.5.2 but 200+ fps under 10.3.9.  (I bypassed the 60 Hz  
> limiter).  I am using the same setup of Millions of Colors and 1280  
> x 800.  I applied the 10.5.2 'Graphics Update' but no improvement.
>
> Any ideas for performance improvements under 10.5?
>
>
> Thanks,
>
> John G
> iMac G5 1.8 GHz, 512 MB Ram, 64 MB VRAM GeForce FX 5200, OS X 10.3.9  
> & 10.5.2
>
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Brian S.