Hololens fails to exitVR successfully

[rc1]

Description:

Given I am using a Hololens in immersive mode,
When I leave the immersive mode,
Then the aframe stops rendering (the browser window only display a white background and not the scene).

The reason the rendering is stops is due to an error being thrown within a component's tick. I haven't been able to track down the component. This happens with a blank scene.

The error is as follows;

TypeError: Unable to get property 'pressed' of undefined or null reference at tick (eval code:65:5) at tick.value (https://server/aframe/aframe-master.js:73647:11) at render.value (https:/server/aframe/aframe-master.js:73695:31) at bound (https:/server/aframe/aframe-master.js:77038:7) at animationLoop (https://server/aframe/aframe-master.js:27442:4)

As an aside, it would be great if component and system ticks were wrapped within a try catch. The catch could log the error via console.error and provide information of which component was being rendered rather than throwing and stopping the rendering.

• A-Frame Version: 0.8.2
• Platform / Device: Hololens
• Reproducible Code Snippet or URL: Any example

[wmurphyrd]

The pressed property name is used in tracked controls for gamepad button state. Does you still experience the issue if you don't enable your hololens gesture code?

[rc1]

Yeah

…

On Sat, Dec 15, 2018, 18:46 Will Murphy ***@***.*** wrote: The pressed property name is used in tracked controls for gamepad button state. Does you still experience the issue if you don't enable your hololens gesture code? — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#3881 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAKMAyYQFRaeGdNln5DMGebMf2ZQDCF6ks5u5UOOgaJpZM4Y2DQb> .

[dmarcos]

@wmurphyrd Any recommendation on what we should do here?

[wmurphyrd]

@dmarcos starting work on a controller component for the hololens gesture. The odd thing hololens does that is probably causing the problem is it creates gamepad entries when detecting a gesture and then deletes the gamepad when the gesture ends. I'll find a way to work around it and include in the controller PR

[3DataWill]

@dmarcos are individual controller components going to be obsolete with WebXR/A-Frame 0.9?

[dmarcos]

@3DataWill No. WebXR is still evolving and will include a mechanism to identify individual controllers. immersive-web/webxr#479

Thanks for helping with this.