Chaos Corona for Cinema 4D > [C4D] General Discussion

Adding grunge map over several individual objects

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kmwhitt:
I’ve got some individual floor tiles that I’ve texture using multishader.  I now want to add a consistent layer of grunge/dirt over the entire floor to add realism.  Keeping in mind that these are individual objects, what is the best way to achieve this?  Thanks in advance, Kevin

BigAl3D:
Sounds like a good time to try the new Decal Object.

kmwhitt:
Al - thanks for the reply.  I've been trying the decal over the multishader floor and Corona crashes.  How would this have been done prior to the introduction of decals?

BigAl3D:
C4D has always had the ability to stack materials and mix them, either in the object manager or using a Layer shader. Corona is having issues with stacked materials in the Object Manager so I'd avoid that.

So with the Multishader, you have created several different versions of each type of tile I'm guessing. In that case, you should be able to add the Layer Shader and stack a grunge map in there. Curious what your setup looks like. I'm going to try on my end to see if I can get something going. Haven't used Corona's Multishader yet though.

kmwhitt:
Al - sorry for the late reply.  I'm not getting notifications for some reason.  The set up is simple.  I have several individual square tile objects with a multishader material assigned to each.  The multishader is comprised of three different marble bitmaps.  I don't see how the layer material can be of any use as the U and V bitmap position has been randomized for each tile.  This would make the grunge map erratic too.

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