DBuffer decals in Rift render in single eye

I posted this 6 days ago in the AnswerHub, but it looks like the VR section there doesn’t have much action. So I thought I would try the forums.

Using UE 4.5.1 (this also happened in 4.4.3) DBuffer based decals only render in the right eye while using the Oculus Rift. Unfortunately, this makes decals unusable for VR.

As you can see in the image, the bullet hole decals are only being rendered in the right eye. The decals themselves reference a Material Instance. The Material being used by the Instance has its Material Domain set to Deferred Decal, and its Decal Blend Mode is “DBuffer Translucent Color, Normal, Roughness”. Finally, I have the appropriate rendering cvars set (r.DBuffer=1, etc.). Everything looks good when not in stereo mode.

Is there anything I can do at my end to get these working? Not being able to use DBuffered decals at all in VR is extremely limiting.


  • Dave