Greetings

Long ago I found a little tool in maya that allow to combine differents channels in a single OpenEXR. There anyway to do the same in XSI?

Sorry for my bad english

I haven't tried this myself, so it might not work...
But if you're feeling adventurous you might want to try the SlideShaders (pdf included) for 3ds Max
and use the mi file and the dll
in the manner described in this thread

in softimage 2011 it have to be inside...2011 versions have the new exr format, like 3d max..

Oops, that's something I completely overlooked...

Not sure about that, as it was requested during beta and afaik not implemented yet in SI......

correct me if i'm wrong and show us where to find it/to use it

I follow Rork, that has been requested long time ago, but if it exists somewhere in 2011 it's very well hidden ! ... then i'd love to be wrong

Earlier today a posted a now removed post (replaced by this one) claiming success with the aforementioned SlideShaders. Sadly, it looks as if it might work (hence my original post), but it really doesn't (as far as I can tell). Maybe someone with a little more time on their hands could look into it: it all goes wrong when trying to write the correct "encoded string" for the framebuffers. The SlideShaders do output a multichannel exr, which can be tested in imf_disp.exe, but apart from the "main" framebuffer, all the other framebuffers turn out wrong in the exr. Like I said, could easily be something to do with me coding the "encoded string" wrong, but could also be something more fundamental.
Just wanted to let you know, why I removed my original post...

Let's give it a try .... well i'm totaly sure i'll not get any further than you did, but I think it's worth trying

Well, I gave it one last try today and it really doesn't seem to work.
The Main pass is correctly written into the exr, the other passes aren't. The frustrating part is, that I "managed" to get different images into the other passes, but never the correct image one would expect. The three images I was able to inadvertently write into the additional exr-channels were: an all-white matte, a totally black image and some colorful image reminding me of a normal pass. As I was actually trying to write an Ambient and a Diffuse framebuffer, this obviously wasn't what I was going for.
Could it be Max numbers/stores its Mental Ray framebuffers completely differently from the way SI does this?
(Better not tell me though, as I do not want to spend much more time on this... )

GRRR that's soooo frustrating ...