1171764 - [meta/webvr] Allow Iframe to be used as "portal" into another 3d world/view

Status: UNCONFIRMED

(Core :: WebVR, enhancement)

Description

[Casey Yee]

Attachment: iframe-viewport.png

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/45.0.2420.0 Safari/537.36

Steps to reproduce:

We need this to be able to view CSS-VR sites from within Horizon.


Actual results:

iframe embedded CSS-VR content shows extreme perspective.

http://caseyyee.github.io/experiment-cssvr-iframe/iframe.html

The screen shots are from May 7th builds.

Comment 1

[Josh Carpenter [:jcarpenter]]

Testing bugzilla slack integration (forgive me)

Comment 2

[Vladimir Vukicevic [:vlad] [:vladv] (needinfo me, slow to respond)]

-> Core/General; in order to do this we'll likely need to hang a bunch of bugs off this one.

This is essentially allowing multiple preserve-3d contexts to exist, with flattening along the way, but with different viewports.

Comment 3

[Casey Yee]

Attempted to fix this in-content by applying the inverse perspective matrix to the containing element of the iframe.  Turns out, the left/right eye projections are slightly different and the cannot be reversed uniformly.  The fix will have to happen in platform.