Feel free to ignore this request entirely on the maketx side. I realize it's a version of maketx I modified weeks ago, adding a "--dither" command-line option (a seemingly trivial addition when looking at the oiiotool code).
The request for oiiotool holds though. I was able to repro the issue with a fresh build of the freshly pulled master branch and Release-1.7.7 tag. On Tue, Oct 4, 2016 at 2:41 PM, Eric Tabellion < [email protected]> wrote: > I'm using OpenImageIO 1.6.13 but using a slightly modified version with > our own build scripts. Let me try a stock build with a more recent version. > > On Tue, Oct 4, 2016 at 1:37 PM, Larry Gritz <[email protected]> wrote: > >> Weird. Here is the the last email I sent, right here on the list. But my >> previous two replies have not shown up in my inbox. >> >> >> On Oct 4, 2016, at 1:27 PM, Larry Gritz <[email protected]> wrote: >> >> The mail server from openimageio.org seems at the moment to be, if not >> broken, then at least significantly delaying things in the queue. >> >> So resending with Eric directly CC'd so he doesn't think I'm ignoring. >> >> I'm having trouble reproducing. Which version of OIIO are you using? >> >> >> >> >> On Mon, Oct 3, 2016 at 11:40 AM, Eric Tabellion < >> [email protected]> wrote: >> >>> Hi, >>> >>> I'm trying to convert grayscale (half) float linear .exr images into >>> 8-bit sRGB render-ready .tx files, while using dithering in the process >>> with --dither. >>> >>> When the input image is 3-channel color data the conversion works fine. >>> However when the image is single channel, --dither seems to choke up a >>> garbled image. Converting the image from 3-channel down to single channel >>> at the same time as using --dither won't work either. >>> >>> For example either of these two commands below will produce garbled >>> images using RGBA inputs: >>> >>> oiiotool input.exr --ch "R" --dither --colorconvert linear sRGB -d uint8 >>> -o output.tif >>> >>> maketx input.exr --nchannels 1 --dither --colorconvert linear sRGB -d >>> uint8 --oiio --compression zip -o output.tx >>> >>> I'm trying to get this all done in one maketx pass, but so far the only >>> way I got this to work is doing this: >>> >>> oiiotool input.exr --dither --colorconvert linear sRGB -d uint8 -o >>> tmp.tif >>> maketx tmp.tif --nchannels 1 --oiio --compression zip -o output.tx >>> >>> This doesn't work though if the input image is already single-channel. >>> Anyone else can reproduce this ? Could this be a --dither bug when >>> dithering single channel images? >>> >>> Thanks! >>> Eric >>> >>> -- >>> --------------------------------------------------------------- >>> Eric Tabellion [email protected] >>> R&D Staff (650)-562-9146 >>> PDI/Dreamworks >>> >>> >>> _______________________________________________ >>> 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 >> >> >> -- >> Larry Gritz >> [email protected] >> >> >> > > > -- > --------------------------------------------------------------- > Eric Tabellion [email protected] > R&D Staff (650)-562-9146 > PDI/Dreamworks > > -- --------------------------------------------------------------- Eric Tabellion [email protected] R&D Staff (650)-562-9146 PDI/Dreamworks
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