1316294 - Wrong square size in webgl2 demo

Status: RESOLVED WORKSFORME

(Core :: Graphics: CanvasWebGL, defect, P3)

Description

[Bogdan Maris, Desktop Test Engineering]

[Affected versions]:
- latest Developer Edition 51.0a2
- latest Nightly 52.0a1

[Affected platforms]:
- Ubuntu 16.04 32bit/64bit

[Steps to reproduce]:
1. Start Firefox
2. Visit demo https://www.ibiblio.org/e-notes/webgl/gpu/bounce.htm
3. Click the Next button

[Expected result]:
- A 20x20px size square is displayed.

[Actual result]:
- 1x1 px size square is displayed.

[Regression range]:
- This is not a regression, it reproduces back to when webgl2 was enabled by default in Nightly (2016-04-25)

[Additional notes]:
- Here are two videos showing the behavior on Ubuntu and Windows:
Ubuntu: https://dl.dropboxusercontent.com/u/109148197/webgl2%20square%20size.mp4
Windows: https://dl.dropboxusercontent.com/u/109148197/webgl2%20square%20size%202.gif

I did not uploaded them directly here because of the format used by the video from Ubuntu, sometimes it does not play for everyone (ran into this in the past).

Comment 1

[Bogdan Maris, Desktop Test Engineering]

So after more investigation, this is also reproducible on Mac OS X 10.11.6 and Mac OS X 10.12.1 using latest Developer Edition 51.0a2 but not on latest Nightly 52.0a1. Both Fx versions are affected on Ubuntu though.

Comment 2

[Bianca Hidecuti, Desktop Test Engineering [:bhidecuti]]

Closing this as WFM as it is no longer reproducible with Firefox Nightly 133.0a1 (2024-10-17) using Ubuntu 22.04.