Post-processing effects on details (e.g. hair strands) in MetaHuman do not properly working

[markyoon]

Hi, I just made a project downloaded from https://www.unrealengine.com/marketplace/en-US/learn/metahumans, and I found that some post-processing effects (e.g. opacity, basecolor, normal) are not not working properly on details like hair strands.

I tried applying post-processing effects using both post-processing material of a CameraActor and post-processing volumes, but the details are missing, like “normals” of all hair strands shows in only blue. However, when I see the viewport changing “viewmode” with WorldNormal, It looks fine. Please see the screenshots. Left: from viewport / Right: from Camera Actor. Exactly same post-processing materials are used. Raw RGBs are fine on both views.

What am I missing? Why post-processing on the details (LOD 0 and 1) is not properly applied? Forcing the LOD=2 of MetaHuman shows the same results on both views.

Thanks.

[krzysztof.fudala]

Hi, do you have any success in solving this issue?

[richard.o.shaw]

I’m experiencing the same issue, all the hair normals are blue!
Did you find a fix for this?

[michael.hogg]

Same issue in 5.4. A fix would be really good.