Bug when combining renderer.vr with clipping planes

[hamishtodd1]

I have some clipping planes. Standard usage: array of planes, given to the material. Mostly works fine.

Problem: when I use it in VR, I get a different result for my left eye and right eyes! It is off to the "left" of my head. I am guessing this is not on my end, and happenning because the positions of the clipping planes are affected by the camera position.

http://jsfiddle.net/bar2jhbm/10/ - you might need to look down?

(thank you for being awesome)

[feiss]

:_(

[hamishtodd1]

My current workaround is to not use .vr. Instead I do it the 2015 way: THREE.VREffect, THREE.VRControls.js

[dmarcos]

@hamishtodd1 We are observing the same problem. Any downsides perf or otherwise when going back to THREE.VREffect and THREE.VRControls?

[hamishtodd1]

None I saw. Pretty sure they are equivalent behind the scenes!

…

On Fri, 20 Jul 2018, 08:59 Diego Marcos, ***@***.***> wrote: @hamishtodd1 <https://github.com/hamishtodd1> We are observing the same problem. Any downsides perf or otherwise when going back to THREE.VREffect and THREE.VRControls? — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#13535 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AMDIRvbGqMicHqXiGmS5lIDxNoeTNKT4ks5uIY3pgaJpZM4SjBgX> .

[Mugen87]

It is definitely slower since THREE.VREffect processes the whole scene twice (or per eye). The implementation based on WebXRManager or WebVRManager avoids this CPU overhead by ensuring that many tasks are done only once per frame (like updating scene graph or render lists).

[dmarcos]

@Mugen87 Thanks for the info. We're also considering accepting the trade off and temporary go back to VREffect and VRControls since there are several outstanding issues that affect us like this one, premature clipping or postprocessing. Happy to help with any of those if you have any particular solution in mind. I have little experience on those areas.