masking of blend materials

[ignicapillus]

Hey community!
With the release of Corona 1.3, I hoped that finally materials IDs of sub-materials would be detected by CMasking_masks... see the attached pic: I need that plastic, print and the silver band on the top left appear on different masks. But they do not :-(

In Vray I could get separate masks and that was super useful in compositing.
Am I the only one to be annoyed by this issue? For me it's very important!

Any suggestion to obtain the masks...?
Thank you!

[romullus]

Hi, it's working here fine, unless i misunderstood your question.

[ignicapillus]

Hello romullus, thanks for answering!
In your example, you're working with a Multi/Sub-Object material, while I am interested in separating materials assigned with a blend... my materials don't follow polygons.

[romullus]

Did you try CShading_SourceColor [diffuse]? Maybe that would do the job?

[ignicapillus]

I just tried it, but it's not good in all scenarios!
I have a workaround with light materials, but a separate render is needed in order to calculate the masks. It' annoying and time-consuming.

Am I the only one in need of this kind of masks...?
For me it's fundamental for fine tuning of colors and reflections with the client...

[ignicapillus]

I am amazed by the fact that just *one* person interacted with this topic. How can you do serious post-processing without masks working properly?
...I think it's currently the biggest flaw in Corona. Please, developers, answer me... will you fix it? I don't think it requires much effort to repair it!
Best,
ignicapillus

[racoonart]

Maybe the problem is that it's not entirely clear what it is exactly you're doing. You have a blend material controlled by an alpha? And you want to use the MtlIDs of these submaterials to appear in the render element?

[ignicapillus]

You perfectly explained my intentions :-)
When the blend material has MtlID=0, Vray makes submaterial IDs appear in the render element.
When the blend material has MtllD different than 0, it overrides the IDs of submaterials.

[racoonart]

So this should probably better be placed into the feature requests forum