Open Bug 1316294 Opened 5 years ago Updated 5 years ago

Wrong square size in webgl2 demo

Categories

(Core :: Canvas: WebGL, defect, P3)

Product:
Core
Component:
Canvas: WebGL
Type:
defect

Tracking

()

Tracking Flags:
Tracking Status
firefox49 --- unaffected
firefox50 --- unaffected
firefox51 --- affected
firefox52 --- affected

People

(Reporter: bogdan_maris, Unassigned)

Details

(Whiteboard: [gfx-noted]) 

[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).
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.
Has Regression Range: --- → no
Has STR: --- → yes
QA Whiteboard: [qe-webgl2]
status-firefox49: --- → unaffected
status-firefox50: --- → unaffected
status-firefox51: --- → affected
OS: Linux → All
Summary: [Linux] Wrong square size in webgl2 demo → Wrong square size in webgl2 demo
Priority: -- → P3
Whiteboard: [gfx-noted]
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