c4d material conversion, alpha and specular conversion unusable?

[marekczyborra]

Hi you all, I have bought a library of x-frog plants. They come as cinema 4d modell with cinema 4d materials. quiet simple materials. Trying to convert or render them in vray 5 or 6 though just doesn´t give any usable results. The alpha channel is wrongly translated, as is the specular layer. Maybe I do something wrong, but it is frustrating. Is this still a bug in this first converter versions or am I doing something wrong? Thanks for your help

[aleksandar.kasabov]

Hello marekczyborra,

Would you mind sharing an example scene with a few problematic materials so we can have a look? Please make sure to save the scene with all assets for it (File> Save Project with Assets). Also, please specify the exact versions of V-Ray, Cinema4D, and your OS. Thank you.

[marekczyborra]

Hello dear Aleksandar,

you could take any example of the xfrog library, here is one examplaric tree, one version with original materials from x-frog and the other after conversion to vray6 node materials. In cinema 4d version r26.107 with vray6.
https://1drv.ms/u/s!AvexODNvoksWhvwf...j1yag?e=8Xy8gD

Best regards

[aleksandar.kasabov]

Hello marekczyborra,

Thank you for providing those details.

This seems to be a bug and I have now reported it to our developers (bug ID: VC4D-1567) for further investigation.

I will keep you updated on the progress. Thanks.

[marekczyborra]

Hello Aleksandar,
anything new about the bug ID: VC4D-1567????
best regards
marek

[aleksandar.kasabov]

Hello marekczyborra,

We don't have any updates on this issue yet. We will let you know as soon as we have any new information about it.

Thank you for your understanding.

[aleksandar.kasabov]

Hello marekczyborra,

Please note that this bug has been fixed and the fix is available in the latest stable build. You can download and install it from here. Thanks.

[marekczyborra]

Hello Aleksandar,
thank you, very good news. Tried it and it seems to work well now! best regards. marek

[marekczyborra]

Hi dear Chaos team.
Still get this following message when using x-frog content, trying to convert their materials or render them:

"[ERROR] Failed converting material "AG17_Leaf1": Unsupported 'bitmap' plugin input type: RawBitmapBuffer
[WARNING] Filter type Circle for texture: Bitmap_0008C9A1AEBC09074751DA025B540200, is not supported!"

This is exemplaric, but is the case with more or less the whole x-frog library.
What is to do? would be nice to be able to convert them, my impression is that the materials with alpha channel won´t convert..

best regards marek

[aleksandar.kasabov]

Hello marekczyborra,

I am sorry to hear that once again you experienced issues with those materials.

Would you mind sharing an example scene with all assets for it so we can investigate further? Also, please let me know what are the exact versions of V-Ray and Cinema4D that you have installed. Thanks.

[marekczyborra]

hello dear aleksander,

sure, here are three examples:
https://1drv.ms/f/s!AvexODNvoksWh-Yy...1A4Kw?e=ezhYDq

actually maybe it should have it´s own thread, because it´s not about specular layer anymore, but it is still about converting the x-frog librarys.
after trying to convert all materials to vray, usually the branch material will convert and the leafs will not. error messages: like "[ERROR] Failed converting material "AG17_Leaf1": Unsupported 'bitmap' plugin input type: RawBitmapBuffer"

today I have tried with cinema 4d 2024 and the latest vray 6.1.2. And before I have tried with c4d r26 and c4d 2023 always with the latest vrays as well. Always the same error.
Would be nice resolve it, so I finally can get the x-frog library converted and put into the asset browser. Thank you for yourt efforts.

Marek

[aleksandar.kasabov]

Hello marekczyborra,

I had a look at your scenes and it seems that the issue is caused by the Backlight shader inside the Layer shader of the Luminance channel of all materials. Keep in mind that the Backlight shader is unsupported by V-Ray and this is the reason for the issue. It seems to happen with any unsupported shader when trying to convert it (check all supported features here). I have reported this to our devs (bug ID: VC4D-1991) for further investigation. We will have a look at it and I will get back to you if we have any updates to share.

Thanks.