logarithmicDepthBuffer causes shader compile errors on Firefox for Android

[fraguada]

Description of the problem

Hello! Today I detected a problem on Firefox for Android 50.1.0 and Firefox for Android 51 Beta. If I switch on renderer.capabilities.logarithmicDepthBuffer= true; the scene fails to load due to a shader compilation error. Here is a gist with the console messages from a remote debugging session.

Here is a jsfiddle which fails on Firefox for Android, but Chrome for Android 55.0.2883.91 seems to work fine.

Here is a jsfiddle which works on Firefox for Android. All that is different is renderer.capabilities.logarithmicDepthBuffer= false;.

This was tested on a BQ androidone and Huawei P9.

Three.js version

• Dev
• r79
• r84

Browser

• [] All of them
• Chrome
• Firefox for Android 50.1.0 and 51 beta
• Internet Explorer

OS

• All of them
• Windows
• Linux
• Android
• IOS

Hardware Requirements (graphics card, VR Device, ...)

[mrdoob]

Ohm... I don't think renderer.capabilities.logarithmicDepthBuffer shouldn't be changed at runtime. You should pass the flag in the constructor instead:

var renderer = new THREE.WebGLRenderer( { logarithmicDepthBuffer: true } );

Do these updates jsfiddles still have the issue?

https://jsfiddle.net/6hLgnqke/2/
https://jsfiddle.net/gtduv3ef/3/

[fraguada]

Hello,
The first link https://jsfiddle.net/6hLgnqke/2/ still had the issue, since logarithmicDepthBuffer = true. I haven't had a chance to check the console output, but did a remote debugging session which yielded very similar results as the previous dump. The result on firefox for android is the same, the scene does not show up.

Ohm... I don't think renderer.capabilities.logarithmicDepthBuffer shouldn't be changed at runtime.

Fair enough. I was attempting a workaround for this issue in my particular case. I can modify my code to define the render after I know enough information to decide if the renderer should use logarithmic depth buffer or not. All that being said, it does not change the fact that logarithmicDepthBuffer: true causes shader compile errors on Firefox for Android in both cases described in this issue.

[Mugen87]

I'm unable to reproduce with latest Firefox 61 on Android 8.1. In any event, bugs like this should be directly reported to https://bugzilla.mozilla.org/