As a first thing i’ve worked on dirty materials:
slate tiles with moss…
quite simple as tiles repeat all around !
sure but they must be irregular… but tileable !
I modeled this in blender… with a base texture and then baked my noised tiles to
normal, disp, diffuse, spec, etc…
then, as old tiles are dirty and mossy i added a dirt texture and a moss layer with nodes.
the trick was to have moss generated with a noise texture ( quite simple ) but this moss layer needed to be as seamless as the tiles textures.
For this i made a tileable noise node group… lol sounds strange but works fine !!!
wh&t am interrested in is that you guys get the process, are able to reproduce it and
make things much better/more beautifull than what i’ve done
the first step for tiles… rared as it’s too big…
ardoises1.rar (9.9 MB)
the same file grouped for unwrapping… a big step as UV islands are the key !!!
ardoises2_grouped.rar (8.8 MB)
The grouped and stitched tiles… latest big file… after this your computer will breathe
ardoises3_grouped_stitched.rar (8.4 MB)
here, the tiles with the nodes tileable noise 8-)) hehehe
ardoises4_dirt_and_moss.blend (2.4 MB)
and finally some thingies i played with… expect nothing but fun from this file x))
ardoises5_bidouilles_dirt_and_moss.blend (2.3 MB)
now as a base, here are the files i worked with… grabbed from the web:
( hopefully i found the way to show them as thumbs
the dirt and moss textures…
and the intermediate slates baked from blender cycles:
And then here are the textures baked from the ardoises4 blend
well now it’s up to you all for making things better
I bet that for most it will be easy ! Please post your blends and results over here
happy blending !