Yes to the question. The LUT transform should be applicable independent of any config.
Also to clarify my second paragraph, the invert flag in the Python binding does _not_ seem to have any effect. Don’t know if that ever worked. HP On Wed, Oct 16, 2019 at 9:46 PM Larry Gritz <[email protected]> wrote: > Hmmm... does not ring a bell. If it's a regression, it must've happened a > while back if it's problematic as far back as OIIO 1.8. > > So --ociofiletransform ought to be 100% self-contained in the named file > transform and so should not need any other working configuration, that's > the expected behavior? > > > On Oct 16, 2019, at 7:27 PM, Haarm-Pieter Duiker <[email protected]> > wrote: > > Hello, > > I'm running into what appears to be a regression. The > ImageBufAlgo ociotransform used to work with only a LUT specified. It now > seems to require that the OCIO environment variable points to a valid > config, even if the LUT has nothing to do with the specified config. This > issue shows up when using that operation from the oiiotool command line or > via the Python bindings. > > Secondarily, the invert options does seem to work for the Python bindings > of the ociotransform operation. It works when called from oiiotool, so the > problem would seem to be isolated to the Python bindings. > > Results and reproduction notes below. > > Does this sound familiar to anyone? Any help would be appreciated, > HP > > > export OCIO_LOGGING_LEVEL=debug > > # This breaks > oiiotool test.exr --ociofiletransform /full/path/to/lut.csp -o > test_lut.exr > [OpenColorIO Info]: Color management disabled. (Specify the $OCIO > environment variable to enable.) > [OpenColorIO Debug]: This .ocio config has no environment section defined. > The default behaviour is to load all environment variables (0), which > reduces the efficiency of OCIO's caching. Considering predefining the > environment variables used. > oiiotool ERROR: ociofiletransform : Could not construct the color transform > Full command line was: > > oiiotool test.exr --ociofiletransform /full/path/to/lut.csp -o > test_lut.exr > > # Now set OCIO to something > export > OCIO=/path/to/Nuke12.0v1.app/Contents/Resources/OCIOConfigs/configs/aces_1.1/config.ocio > > # This works > oiiotool test.exr --ociofiletransform /full/path/to/lut.csp -o > test_lut.exr > [OpenColorIO Debug]: This .ocio config > '/path/to/Nuke12.0v1.app/Contents/Resources/OCIOConfigs/configs/aces_1.1/config.ocio' > has no environment section defined. The default behaviour is to load all > environment variables (0), which reduces the efficiency of OCIO's caching. > Considering predefining the environment variables used. > [OpenColorIO Debug]: Opening /full/path/to/lut.csp > [OpenColorIO Debug]: Loaded primary format cinespace > [OpenColorIO Debug]: GPU Ops: Pre-3DLUT > [OpenColorIO Debug]: GPU Ops: 3DLUT > [OpenColorIO Debug]: Optimizing Op Vec... > [OpenColorIO Debug]: Op 0: <FileNoOp> supports_gpu:1 > [OpenColorIO Debug]: Op 1: <Lut1DOp> supports_gpu:0 > [OpenColorIO Debug]: Op 2: <Lut3DOp> supports_gpu:0 > [OpenColorIO Debug]: Optimized 3->2, 1 passes, 1 noops removed, 0 inverse > ops removed > [OpenColorIO Debug]: 0 ops combines > [OpenColorIO Debug]: Op 0: <Lut1DOp> supports_gpu:0 > [OpenColorIO Debug]: Op 1: <Lut3DOp> supports_gpu:0 > [OpenColorIO Debug]: GPU Ops: Post-3DLUT > [OpenColorIO Debug]: CPU Ops > [OpenColorIO Debug]: Optimizing Op Vec... > [OpenColorIO Debug]: Op 0: <FileNoOp> supports_gpu:1 > [OpenColorIO Debug]: Op 1: <Lut1DOp> supports_gpu:0 > [OpenColorIO Debug]: Op 2: <Lut3DOp> supports_gpu:0 > [OpenColorIO Debug]: Optimized 3->2, 1 passes, 1 noops removed, 0 inverse > ops removed > [OpenColorIO Debug]: 0 ops combines > [OpenColorIO Debug]: Op 0: <Lut1DOp> supports_gpu:0 > [OpenColorIO Debug]: Op 1: <Lut3DOp> supports_gpu:0 > > > Tested with > OpenImageIO.VERSION = 10813 > OpenImageIO.VERSION = 20008L > > opencolorio-1.1.0 > > > https://github.com/OpenImageIO/oiio/blob/master/src/libOpenImageIO/color_ocio.cpp#L281 > > https://github.com/OpenImageIO/oiio/blame/d71ac830c966fcc2bc05349e1eebc0b883a352f3/src/libOpenImageIO/color_ocio.cpp#L281 > > > > Example script that exercises the functionality > https://github.com/hpd/general/blob/master/hdr/python/mkhdr.py > > Example lut > https://github.com/hpd/general/blob/master/hdr/curves/thetas.spi1d > > Example command line > python mkhdr.py -r /path/to/thetas.spi1d —I /path/to/a.jpg -o > /path/to/b.exr -b 0 > > > > _______________________________________________ > Oiio-dev mailing list > [email protected] > http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org > > > -- > Larry Gritz > [email protected] > > > > > _______________________________________________ > Oiio-dev mailing list > [email protected] > http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org >
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