Frosted glass again

[Peter Milner]

The Hybrid engine seems to have trouble rendering frosted glass.

The first image here is Path Trace and the second Hybrid. The frosted glass material is exactly the same:

[Roy Hirshkowitz]

Thanks-- can you send a small (or not so small) example?  You can use the upload link if it's too big or you don't want to attach it.

[Peter Milner]

Uploaded.

[Peter Milner]

After a quick bit of investigating, I've worked out that it is directly connected to alpha transparency.

If I tag the objects as "No alpha transparency" then they render fine as per the Path Tracer render.

[Alejandro Testa]

Hi, this is quite interesting, so any object with translucency should be tagged as no alpha tranparency when  we render in hybrid engine?

Thank in advance

[Peter Milner]

It looks that way until Roy fixes it.

Alpha transparency for translucent objects is very poor anyway. So I would take it off for any render regardless of which engine is used.

[Alejandro Testa]

Thanks Peter,  for your quick answer.

[Roy Hirshkowitz]

Ah-- thanks-- I had a couple of hours scheduled to investigate-- frees that time up.  Now what do about it?  Should only perfectly smooth glass trigger alpha transparency as in the other engines or is there a better solution?