Hi,
I need to write images to the disk, and am facing a problem that seems
so basic i'm wondering if I'm not missing something obvious.
I need to write specific channels to an image. For example, write UVW
values next to RGBA 'standard' data.
Using directly OpenEXR, i would create the seven channels one after
another and fill each channel with matching data. Our application
(Clarisse IFx) stores data per channel so it would be pretty
straigthforward.
I have seen no way using OIIO to do such a thing: there is no
writeScanline function that would take start / end channels: i can't
write data channel per channel.
The only thing I could do is build a huge interlaced buffer gathering
all channels from my image and call "writeimage", but i fear it would
use an horrible amount of memory and extra processing that seems unecessary.
Should I check the file format first and directly instanciate an
EXROutput or TiffOutput when needed ? How could I set channel names ?
Thanks in advance for your help,
Michel
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