Chaos Corona for Cinema 4D > [C4D] Bug Reporting

Team Renderer Issue with Corona Bitmap Shader in C4D 2025: Materials Not Display

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tuami:
Hi @bnji,

I’ve discovered something interesting:
As long as the native Cinema 4D Bitmap shader is still loaded in the Node Editor (but not connected to anything), the scene works correctly with Team Render.
However, as soon as the C4D Bitmap shader is completely removed, it no longer works.

Could you please set up your scene like this:

1. Add the black & white opacity map to the Asset Browser.
2. Create a Corona Bitmap shader (make sure no C4D Bitmap shader is active in the Node Editor).
3. Drag the image from step 1 into the Node Editor and copy the asset path (IT HAVE TO BEGIN WITH assetdb:///) and paste it into the corona bitmap shader
4. Important: Delete the image you just dragged into the Node Editor, so that only the Corona Bitmap shader remains.
5. Connect the Corona shader to the Opacity input of the Physical Material.

Run a local test and a Team Render test.

Thanks!

Best regards,
Tuami

metanerd:
I’m following up on this again. Just like with Tuami, we can reproduce the same behavior here.
Everything works as expected up to version Cinema Version 2025.0.2.
Starting with version 2025.1 and up to the current version 2025.2.1, files imported from the Asset Browser that either use the Bitmap Shader or are set up as Shared Materials no longer work in Team Render. Both V12-Hotfix 1 and V12-Update 2 work correctly under version 2025.0.2, but not from version 2025.1 onwards.
For us, this means we can no longer install any C4D updates, which is extremely inconvenient.

BigAl3D:
Interesting. I had reported this Team Render issues a long time ago, maybe 4 or 5 years. Team Render behaves similar to Save with Assets. In my case, textures, at least from third party materials sets, when collected would change the name of the texture file to some random numeric name, but not the inside the path so they would all be missing from the render. In my case it was a material set from The Pixel Lab. I will try your workaround with a C4D node sitting in there.

For me, I haven't used Team Render in a long time, but this issue would be a problem if you want to use a render farm too.

maru:
Reproduced and logged (Report ID=CC4D-1028). It looks like Corona Bitmap doesn't render through Team Render at all, not only when used as opacity.

jojorender:

--- Quote from: maru on 2025-06-11, 15:26:29 ---Reproduced and logged (Report ID=CC4D-1028). It looks like Corona Bitmap doesn't render through Team Render at all, not only when used as opacity.

--- End quote ---

Oh cool, we have been here before!
The corona team acknowledging one single Corona Bitmap problem, maybe even saying they'll fix that one, while totally blowing off all the other headaches that shader causes.
So, honestly, my gut feeling is the same old story this time around: nothing's gonna change.

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