To set things out, this is not VR-related, its in the right place.
Is it possible in Unreal 4 to create Vertex Displacement that affects all scene geometry without applying node displacement shader to every material on the scene?
Something described here: VR Distortion Correction Using Vertex Displacement
Or in text here: http://www.gamasutra.com/blogs/BrianKehrer/20160125/264161/VR_Distortion_Correction_using_Vertex_Displacement.php
I have a shader in nodes and in HLSL that creates fisheye effect, but only way that I know, to make it work in UE is to copy it to every single material in the project.
Do you know any better way to apply such effect?