[Sidefx-houdini-list] Film at 16 bit
Michael Goldfarb
goldfarb at coredp.com
Fri Mar 7 17:45:34 EST 2008
is someone writing this down?
Peter Robbinson wrote:
> Wow, that's a hell of a lot of useful information in a very few words.
>
> Thanks Mark!
>
> Peter
>
> Mark Alexander wrote:
>
>>Both 16b Int and 32b FP are XMMX and SSE optimized. 16b FP is the
>>slowest of the bunch, being a format that is not native to the CPU (it
>>is pretty much always up-converted to FP32). 16b Int is probably the
>>most work, since you have to worry about the white point (setting it
>>somewhere around 4000 for really HDR stuff).
>>
>>However, you can save all your files in 16b FP and force the compositor
>>to load them as FP32 files. Edit->Composite Project Settings, "Pixel
>>Format" = "32 bit FP" and "File Operators use the Project Pixel Depth by
>>Default" = "On". That save disk space and network bandwidth, while
>>optimizing performance in COPs by comp'ing everything in 32b FP. You can
>>still save out 16b FP files at the end without any problems.
>>
>>Cheers,
>>M.
>>_______________________________________________
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>>Sidefx-houdini-list at sidefx.com
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>>
>>
>
>
--
.......................................................................
Michael Goldfarb email: goldfarb at corefa.com
c.o.r.e. digital pictures http://www.coredp.com
.......................................................................
"Unless you're an astronaut, secret agent, vampire hunter,
or all three, you're probably a sellout; screw you."
- Maddox 2003
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