Quick Frosted Glass

Support Materials and Textures
1

Hi All,
I had a look at the frosted glass example using nodes (i can’t find the link now) and I noticed that it was really slow to render, my duo 2.4gHz with threads was just inching along. IMO hardly usable for animation.

I got to tweaking the original idea of making a really small noisy normal map, but that is actually very noisy. However, I found that tweaking the shader parameters, esp using toon for the specular works quite nicely.
check it out:

Blend file:
http://uploader.polorix.net//files/165/frostedGlass.blend
Before tweaking, just a noisemap:
http://uploader.polorix.net//files/165/FrostedGlass.jpg

After:

http://uploader.polorix.net//files/165/FrostedGlass_00.jpg

2

Excellent!

3

Really cool workaround. I know this is gonna come in handy!

THanks!

4

ya it is slow because to get a grain free result you need just few bump maps arg …

blured raytraced refraction would just do the job for us.

5

Yeah I agree, I toyed with the conetrace in yafray, looks really nice, but also takes ages.
FYI in the upper image I also stacked different bumpmaps to approach the node method, to no avail as you can see. The node method is still a really innovative way of using nodes, though.
Inspired me to try to blur the reflection using composite nodes, works, but I need to hammer out some details.

6

This is great, will rewrite this as a tutorial later for everyone else thanx