Cool. Thanks Ben. This makes sense. Do all those LUT file-types, besides 3dl actually carry a 1D shaper LUT? I thought only .csp and .blut do, but I see that in the GenerateLUT node it refers to 1D preLUT in blut, cms, csp, cub, cube and vf.
On Tue, Jan 15, 2013 at 3:33 PM, Ben Dickson <[email protected]> wrote: > The GenerateLUT node does not have any way to specify the pre-LUT part of > the CSP file, the "1D preLUT" options only apply to certain output formats > (e.g .cms) > > In the past I've used the GenerateLUT to create the 3D part of the LUT, > then added in the preLUT section manually (with a Python script) > > Not exactly what you need, but this should give you the basic idea: > https://gist.github.com/**4543134 <https://gist.github.com/4543134> > This only samples the ColorLookup between 0-1, and it writes a 1D CSP file > (which has an identical prelut section) > > > > I'm not sure if the Nuke node requires that I have a config.ocio file > > Nope, the current GenerateLUT node pre-dates the OCIO integration. > > If you have an suitable config, you can use OCIO's ociobakelut command, > http://opencolorio.org/**userguide/baking_luts.html<http://opencolorio.org/userguide/baking_luts.html> > This can write a preLUT allowing linear input > > It would be nice if OCIO had it's own OCIOGenerateLUT node, there's a > ticket for this: > https://github.com/imageworks/**OpenColorIO/issues/8<https://github.com/imageworks/OpenColorIO/issues/8> > > > On 16/01/13 06:55, Dan Rosen wrote: > >> Hello, >> >> I am trying to use GenerateLUT to author csp files for linear light >> images to display conversion. We also have a custom LogLin so I'd like >> to set the shaper lut to something custom with a file or values there. >> I'm not sure if the Nuke node requires that I have a config.ocio file or >> not, but I cannot seem to figure it out. I've looked in the docs and >> don't see it there either. Any help is much appreciated. >> >> Thanks, >> Dan >> >> >> ______________________________**_________________ >> Nuke-users mailing list >> [email protected].**co.uk<[email protected]>, >> http://forums.thefoundry.co.**uk/ <http://forums.thefoundry.co.uk/> >> http://support.thefoundry.co.**uk/cgi-bin/mailman/listinfo/**nuke-users<http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users> >> > > -- > ben dickson > 2D TD | [email protected] > rising sun pictures | www.rsp.com.au > ______________________________**_________________ > Nuke-users mailing list > [email protected].**co.uk<[email protected]>, > http://forums.thefoundry.co.**uk/ <http://forums.thefoundry.co.uk/> > http://support.thefoundry.co.**uk/cgi-bin/mailman/listinfo/**nuke-users<http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users> >
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