[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.
>>_______________________________________________
>>Sidefx-houdini-list mailing list
>>Sidefx-houdini-list at sidefx.com
>>https://lists.sidefx.com:443/mailman/listinfo/sidefx-houdini-list
>>
>>  
> 
> 

-- 
.......................................................................
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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