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  • David Sparks
    • Nov 7
    • 1 min read

Ray Tracing and Two-Sided Foliage

A few years ago, as I was preparing my foliage libraries for sale on the Unreal Engine Marketplace, I had issues with Ray Tracing (a relatively new feature in UE 4.2X) and the Two Sided Foliage shader, particularly the Sub-Surface parameters. I wrote some extensive blog posts about this, with examples and solutions at the time, on my old blog at Blogger.

https://bay12please.blogspot.com/


However, based on some recent online research it appears these issues have been addressed. I point to this documentation from Epic:

https://docs.unrealengine.com/5.3/en-US/hardware-ray-tracing-in-unreal-engine/

It mentions that both the foliage and sub-surface properties are supported.


I hope to have a chance to test out whether this is really true in UE 5.3 very soon. I'll follow up with my findings. The only previous solution to get Sub-Surface to work in the Two-Sided Foliage was to disable Ray Tracing. It would be great if this truly is fixed.

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