How do I make blurry/dirty glass?
I had a similar effect I was trying to achieve recently (etched glass and glossy refractions).
The closest I managed to get it to work was to pipe in a high frequency noise into the refractive index, clamped between 10% -+ of my target IOR.
The problem is, the engine takes a couple of seconds to update the refraction, so your fuzzy glass has a weird swimming effect. Not ideal.
answered Apr 04 '14 at 11:45 AM
Glass Seems to be A Tricky Bit of Business right now. Reflections, Blurriness all have issues, my immediate suggestion is add a reflection Cube to the material, and blur it in Photoshop....
answered Apr 03 '14 at 09:27 PM
Maybe have some kind of vertex based distortion/scattering in the shader?
Although, that might require you to increase complexity of your mesh at the point where it's supposed to be refracting/blurring. And if this area is not static but changes/moves, well that makes it even more interesting to accomplish. :)
answered Apr 04 '14 at 12:03 AM
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