Shader error on ios 15 devices causes squares to appear on the screen

• Component: WebGL
• Status: RESOLVED CONFIGURATION CHANGED

[Daniil]

Created attachment 447230 [details]
Ninjango bug example

Shader errors on devices with ios 15 version.

Problem occurred on both 15.0 and 15.2 versions of iOS.

Compilation error in the console:
THREE.WebGLProgram: shader error:  1282 35715 false gl.getProgramInfoLog Internal error compiling shader with Metal backend.

Games bug occurred in:
https://www.toggo.de/spiele/spiel/turnier-der-tapferen
-To recreate the bug:
Go through the link with ios 15 version
After game is loaded click on the start game button
Go through the all the screens until you will reach the 3d game scene
Wait until countdown is finished 
Black squares will appear and the compilation error will show up


https://www.toggo.de/spiele/spiel/fusballturnier
-To recreate the bug:
Go through the link with ios 15 version
After game is loaded click on the start game button to start a game
Green squares will appear and the compilation error will show up

[Daniil]

Created attachment 447231 [details]
Angelo bug example

[Alexey Proskuryakov]

> https://www.toggo.de/spiele/spiel/fusballturnier

I cannot reproduce this with iOS 15.3 beta. Could you please verify with this version?

> https://www.toggo.de/spiele/spiel/turnier-der-tapferen

Seems like this waits for another player to join, which wasn't happening when I tried.

[Radar WebKit Bug Importer]

<rdar://problem/86810403>

[Daniil]

The issue was solve with the iOS 15.3 version update.