While Vulkan is the future, there is no support for VR on mobile in current Vulkan API.
Looking at OpenGL ES - Wikipedia I can see that ES 3.0+ offers a lot more goodies than ES 2.0
According to Oculus, UE4’s ES 3.1 renderer is not “compatible” with Gear VR as Epic chose to not bother with ES 3.1 and move toward Vulkan. It’s all good for regular mobile of course. Meanwhile mobile VR folks are stuck with ES 2.0
Could Epic please reconsider and add support for Gear VR to ES 3.1 renderer ? (and enable ES 3.1 to be selectable in Project Settings so that we don’t have to build engine from source to get ES 3.1 working)
P.S. Vulkan is the future, I know that… But if that future doesn’t come this year (which it won’t) or in 2017, might as well give mobile VR devs better renderer than ES 2.0 until Vulkan for mobile VR is implemented and well tested.