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Problem with glass material

Hy, I have attached 3 screenshots showing a problem I have with my glass material. When I look through a transparent object (a glass of wine) against a bright background the object itself starts disappearing, like bwing cliped somehow. Does anybody knows what can cause this problem and can it be solved. Thank you very much!!

Product Version: UE 4.9
glass_ok.jpg (739.7 kB)
glass_not ok.jpg (727.8 kB)
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asked Sep 02 '15 at 09:00 AM in Rendering

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Hey razanus,

Your materials set up is a bit different since you are using a Custom Reflection Vector with the Cubemap Texture, but take a look at the screenshots below and see if you can combine your diffuse color with my own set up.

Glass Material Set Up

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I have outlined the materials properties to make sure you are using the same values. The Separate Translucency is so your material is affected by your scenes Depth of Field.

Two-Sided Unchecked

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Above is an example of what it looks like to have two-sided unchecked.


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Notice the material renders a bit darker now that two-sided is checked. This is where creating parameters within your material and creating a material instance comes in handy!

Two-Sided at Half Opacity alt text

By creating a material instance, I was able to quickly change the values of my parameters to get the look I wanted without having to recompile my shaders.

The material I used was made by following along with this tutorial, made by one of our community members! I hope this helps resolve your issue but let me know if you still need help.


Andrew Hurley

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answered Sep 02 '15 at 06:55 PM

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