Chaos Corona for 3ds Max > [Max] Resolved Bugs

Can't produce a correct CMasking_Cryptomatte element

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mase:
Ok, so it works now and I think I figured out why it didn't work first (and whether that's a bug or not it's up to you).

I would save my render to .cxr (we use deadline for rendering so that's a standard workflow) and then would open it with Image Editor and would try to save from there to another .cxr file. Instead, I should've just copied the original .cxr and renamed it to .exr, opened it in Photoshop and voila! In theory, resaving the .cxr into another .cxr should create the exact same file but somehow it doesn't work with cryptomatte exr worflow. I know it's confusing but I hope I made it clear enough to understand.

Thanks for your help.

maru:

--- Quote from: mase on 2023-01-20, 14:31:07 ---Ok, so it works now and I think I figured out why it didn't work first (and whether that's a bug or not it's up to you).

I would save my render to .cxr (we use deadline for rendering so that's a standard workflow) and then would open it with Image Editor and would try to save from there to another .cxr file. Instead, I should've just copied the original .cxr and renamed it to .exr, opened it in Photoshop and voila! In theory, resaving the .cxr into another .cxr should create the exact same file but somehow it doesn't work with cryptomatte exr worflow. I know it's confusing but I hope I made it clear enough to understand.

Thanks for your help.

--- End quote ---

Thanks for sharing, this is very interesting and we will investigate. Just to make sure: in Corona Image Editor are you using the "save" or "save all" option when resaving to CXR format?

mase:

--- Quote from: maru on 2023-01-20, 14:39:05 ---Thanks for sharing, this is very interesting and we will investigate. Just to make sure: in Corona Image Editor are you using the "save" or "save all" option when resaving to CXR format?

--- End quote ---

Just "save". It already takes some time especially when cxr is in high resolution and with a lot of elements, I'm afraid "save all" as cxr would explode my machine.

maru:
If I am not mistaken, "save" only saves the item currently visible on screen. So if you are viewing the LightMix element, you will only save that single element in .cxr format, if you are viewing CMasking_Mask, you will only save that single mask. But I will double check and return here.

maru:
Ok, so I was wrong and I can reproduce the issue:

"Save all" in CIE saves all render elements as separate files - my bad!

If I follow these steps:
1. Set up a scene with cryptomatte, render, save as CXR
2. Open in CIE
3. Save in CIE as CXR
Then I get different layers in Photoshop if I compare the CXR saved in point 1 vs the one saved in point 3.

I will now report this to the devs. I do not have a workaround at this time, sorry.

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