[Bf-committers] 64-bit builds with ray optimization

[Thomas Dinges]

SSE3 was introduced in 2004 by Intel (Pentium 4) and in 2005 by AMD. 
Thats 6/7 years now already.

If there is any code that can't detect SSE2/3 on runtime, we should just 
make extra builds. But making only 1 build (even for x86) would be stupid.
It's okay to support 10 year old cpu's who don't have these extensions, 
but at the same time we should not disable these optimizations for 
people using, well "old" hardware too. 6/7 years is old. ;-)

Am 12.12.2011 02:10, schrieb Antony Riakiotakis:
> Hi everyone, it's release time soon.
> There has been some debate on irc on the topic of enabling ray
> optimization for release builds.
>
> Pros are: faster program, cons of course are that we are less
> compatible with older machines.
>
> I see though no reason why 64-bit machines, that support sse2, should
> not be built with ray optimization on by default.
>
> If this is decided upon, there are some -sse3 flags in cycles that
> should probably be taken care of.
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-- 
Thomas Dinges
Blender Developer, Artist and Musician

www.dingto.org