Unreal Auto-Setup black hair shader issue when using HDRIBackdrop with raytraced shadows Home » 3D Pipelines » Unreal 4/5 https://forum.reallusion.com/Topic511408.aspx

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By pxlpshr42 - 3 Years Ago We use HDRIBackdrop in Unreal with ray-traced shadows. We observed for this case the following CC3 Auto-Setup shader problem: HQ shader: not working, hair is all black LW shader: not working, hair is all black Standard shader: working Do other people have the same issue? We tested this with Unreal 4.27.2 (1.22 Auto-Setup) and 5.0.1 (1.23 Auto-Setup). Problem goes away when we turn off ray-traced shadows on the HDRIBackdrop but we need it for the HDR images to automatically cast ground shadows of the characters.