Chaos Corona Forum
Chaos Corona for 3ds Max => [Max] I need help! => Topic started by: vahur6 on 2019-01-20, 20:36:44
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Hi guys,
What would be the best approach to mimic this kind of matte steel in corona? I guess it's called sand blasted steel finish?
Does the the basic metal approach of "0 diffuse, 1 reflection, 999 IOR and tweak the glossiness map until you're happy" still apply here? I couldn't get anywhere near the real life look. Maybe because I couldn't find a good texture for it.
Anyway, if there is someone with few minutes to show off his mad texturing skills, I would certainly appreciate some tips.
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Alright, here is my crack at your micro-scratch steel material.
The main take away of the material that I noticed is that the scratches should pop out right? So that means giving your micro scratches a higher Ior than the rest of the base metal. So in this case base IOR map and the bump map are the same. If you notice in your examples there is a higher IOR around the edges, so i nested this within a corona AO map with inside mode on.
I then used another different scratch map to give variation in the glossiness, nested into a fall off map so it is more glossy in grazing angles.
I then use the dirty grunge map and remapped it to give it some yellow tinge, with a gradient ramp using map mode and nested that in falloff map to plug it in the refl color slot, to give more variation.
Hope this helps!
NOTE: ALL the maps I used, were not used as is, I heavily modified them using color map adjustments in the output tabs of the maps.
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Yes! You definitely got further with this than I did. Mapping the IOR to get more pronounced scratches was the missing piece for me.
Thanks for sharing your workflow and maps. I am going to steal them.