1514957 - offscreencanvas doesn't seem to work

Status: RESOLVED WORKSFORME

(Core :: Graphics: Canvas2D, enhancement, P5)

Description

[billconan]

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:64.0) Gecko/20100101 Firefox/64.0

Steps to reproduce:

try this page, https://devnook.github.io/OffscreenCanvasDemo/keep-ui-responsive.html

after enable offscreen cavas in about:config, this page still can't be rendered.


Actual results:

on the page, the offscreen canvas is rendered as blank


Expected results:

offscreen canvas should work if enabled

Comment 1

[billconan]

the same page works fine in chrome

Comment 2

[Alice0775 White]

NS_ERROR_NOT_IMPLEMENTED: animation.js:74
set theme
https://devnook.github.io/OffscreenCanvasDemo/animation.js:74:45
ThemedAnimation
https://devnook.github.io/OffscreenCanvasDemo/animation.js:69:5
<anonymous>
https://devnook.github.io/OffscreenCanvasDemo/keep-ui-responsive.html:120:31
<anonymous>
https://devnook.github.io/OffscreenCanvasDemo/keep-ui-responsive.html:105:5


duplication of  bug 801176?

Comment 3

[billconan]

I realized that not only offscreencanvas doesn't work on my machine, webgl doesn't work at all.

I checked about:support, firefox can detect my nvidia 1080ti gpu, and I have webgl working fine under chrome.

I searched, someone said this might be a bug in nvidia driver, if firefox is launched with sudo, the issue will be gone.

I tried, but I wasn't able to start firefox with sudo, I saw errors with Mir.

another error message I saw with the terminal was libGL.so can't find the right fbconfig or something. 

I'm using ubuntu 17 with firefox 64/61.