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For my project, I didn't notice any difference in performance from using
D3DCREATE_FPU_PRESERVE. That's on a pretty modest set up (Win XP SP2,
P3-1Ghz, GeForce 4 TI-4200).

If I get chance I'll do some "before" and "after" D3DCREATE_FPU_PRESERVE
benchmarks and post the results here.


-----Original Message-----
[] On Behalf Of Richard Ranft
Sent: 24 May 2006 14:29
To: Lua list
Subject: RE: Math.Random() always returns 0

> By using the
> D3DCREATE_FPU_PRESERVE option when creating the D3D device, the 
> math.random problem vanished.

What performance impact - if any - has this caused?  Microsoft's docs
mention an unspecified performance hit and I'm wondering if anyone has
actually noticed how bad (or not) that it is.