How do I render the inside of a transparent model (a glass jar)?

Question

I'm trying to create a HDRP/lit material for a glass jar model. The jar is a single mesh and it has an inside.

However, when rendered by unity the bottom of the glass isn't rendered:

bottle without bottom

I've tried enabling double-sided surface for the material, as suggested in a tutorial, however, this seems to just disable back-face culling, and, as expected I just get lots of artifacts from z-fighting.

bottle with artifacts

Some parts of the model do look right, though... I guess what I want, is for the inside of the jar to be rendered first, and then the outside on top. Does anyone know how to achieve this?

Answer 1

Answer by bobbaluba · Sep 28, 2019 at 06:04 AM

So I tried a few more things. Turns out enabling "appear in refraction" seems to be doing what I want:

$appear in refraction bottle$

The options I used:

$appear in refraction options$

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How do I render the inside of a transparent model (a glass jar)?

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