I was having some trouble with the wind effect on some Quixel plant assets and whilst trying to figure out what the issue is I’ve found that Ray Traced translucency causes a doubling effect on some geometry using world displacement, even if the material doesn’t use translucency/masks. But if I set the translucency type to Raster in the PPVolume it goes away.
This shows the doubling effect is visible in the world but not in the blueprint preview (because that viewport isn’t using ray tracing?)
It’s also visible on other materials, the non-displaced original geometry is still visible under the surface of the object, its just not as noticeable as the displacement isn’t moving.
Is this an engine bug or is there something I can turn on/off to stop this from happening
Here is a screen shot with the settings of the PPV visible.
When Ray Traced Translucency is on, there is a geometry doubling effect.
When it is set to Raster type for Translucency the issue stops. I should also mention that if the Max Refraction Rays is set to zero it also stops the issue, but it seems to be the same as disabling RT Translucency so that isn’t really a solution.
Hi Visuals. The solution I found for foliage in this case would be Modes > Foliage > Shift click to select all your foliage with the shadowing issue, and simply uncheck “cast dynamic shadows” will fix the issue.
