LuxRender 1.0-dev Windows build of 13-05-2012 (updated)

[Lord Crc]

Not seeing the 40% speed-up though. Could it be just for linux (because of the slow expf())?

Yeah, that's likely. The slow expf is just for glibc (and apparently it has been patched very recently). You can see my windows timings here: viewtopic.php?p=81312#p81312 (compare the ratio between sinf and expf on windows and linux, it's two different cpus so can't compare directly).

[SATtva]

The slow expf is just for glibc (and apparently it has been patched very recently).

Can you recall glibc version where it was fixed?

[Lord Crc]

Can you recall glibc version where it was fixed?

http://sources.redhat.com/git/?p=glibc. ... 0d8aa2d580

That's all I know

[SATtva]

Thanks, will check whether i have this code locally.

EDIT: Nevermind, i forgot it's almost impossible to link libc statically.