Material Color Pass vs. Material ID

[Lobster_Johnson]

Hi everyone,

I'm new to Octane and using it for some mograph work and compositing in After Effects.

I want to easily get material mattes in my EXR renders, but it seems I can only get a "material color" pass with a unique RGB for each material. Although this is cool, it is next to impossible to composite well because the anti-aliasing between each color screws up getting a clean matte.

Is there any way to render out a Material ID channel from C4D Octane into an EXR? Am I missing it, or is it a feature that just hasn't been introduced?

Thanks,
Ian

[aoktar]

i don't suppose there is other way to get materials expect this.

[Lobster_Johnson]

So is it a problem with writing to a Material ID channel in an EXR, or a problem with C4D? Obviously Octane can identify the materials without a problem. Is there no way to format the EXR channel properly, so we can composite with it?

Thanks,
Ian