frost on metal?

[lukx]

Does anyone have any tips for creating frosted material, like on the metal things when you take them out from the fridge? Blend vraymaterial with a bit of displacement?

[joconnell]

Bingo - Kind of the same as making puddles in the ground, you use a quite hard edged map to blend between frost and metal, then use a more soft edged version of the same map for your displacement mask so that you can control how quickly it builds up.

[lukx]

hmmm but when using refraction on coat material I'm just getting dark color... maybe I will have to create separate geometry for frost ...

[lukx]

such simple thing and so much headache:

[joconnell]

To be honest I'd just transition between the main surface and hard ice with no refraction - you'll get a bit of blending naturally which'll mimic the refraction.

[simmsimaging]

I would do that with a sublte bump map rather than displacement, and then a variation of that same map as a refraction glossiness map should give you the frosted effect. I would not use refraction, just fade between a sharper and glossier reflection in the VrayBlendMtl.

[lukx]

Thanks guys, will try that.

[lukx]

I would do that with a sublte bump map rather than displacement, and then a variation of that same map as a refraction glossiness map should give you the frosted effect. I would not use refraction, just fade between a sharper and glossier reflection in the VrayBlendMtl.

Brett so you meant "same map as reflection glossiness" ?

[simmsimaging]

yep. Use the same pattern/texture to map the glossiness so that the frost effect corresponds. It depends on how "tall" the condesation droplets are going to be in your image. For the samples you have shown you really don't even need a bump map because they are extremely micro-sized. Use a condensation/droplet map as a reflection gloss will give you a good look, and then use a frosty looking map to blend the frost material layer into the regular material layer.