Chaos Corona Forum

Chaos Corona for Cinema 4D => [C4D] General Discussion => Topic started by: kmwhitt on 2022-07-11, 23:12:37

Title: Adding grunge map over several individual objects
Post by: kmwhitt on 2022-07-11, 23:12:37

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

Title: Re: Adding grunge map over several individual objects
Post by: BigAl3D on 2022-07-12, 02:50:34

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

Title: Re: Adding grunge map over several individual objects
Post by: kmwhitt on 2022-07-12, 17:29:12

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?

Title: Re: Adding grunge map over several individual objects
Post by: BigAl3D on 2022-07-12, 18:50:44

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.

Title: Re: Adding grunge map over several individual objects
Post by: kmwhitt on 2022-07-14, 13:42:46

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.

Title: Re: Adding grunge map over several individual objects
Post by: BigAl3D on 2022-07-15, 21:42:32

Ah I see what you mean. Curious that your scene crashes with the Decal Object. I am able to achieve this effect with the Decal.

Title: Re: Adding grunge map over several individual objects
Post by: Pepelecrabb on 2022-07-16, 13:30:50

Before Decals came along I would take your floor object(s) and duplicate it, make it one object (Connect and Delete), remove the existing material(s) and add a grunge material with transparency. Maybe float it .001 on the Y axis above the existing floor depending on if any displacement is used.

Title: Re: Adding grunge map over several individual objects
Post by: kmwhitt on 2022-07-25, 23:21:15

Good suggestion.  Thanks!