923061 - WebGL rendering issues on Linux

Status: RESOLVED INCOMPLETE

(Core :: Graphics: CanvasWebGL, defect)

Description

[Paul Silaghi, QA [:pauly]]

Attachment: Screenshot

I see a strange black triangle when playing Epic Citadel on Ubuntu 13.04 x64, FF 25b4.
Video card: ATI Radeon 3000

Comment 1

[Paul Silaghi, QA [:pauly]]

Reproducible on FF 23.0.1

Comment 2

[Paul Silaghi, QA [:pauly]]

Linux specific only.

Comment 3

[Paul Silaghi, QA [:pauly]]

Reproducible on FF 26.0a2(2013-10-01), 27.0a1(2013-10-01), Ubuntu 13.04 x64.
Strange I couldn't reproduce on another machine with Ubuntu 12.10 x86.
So it's either video card or x86/x64 related. I'll dig further.

Comment 4

[Paul Silaghi, QA [:pauly]]

(In reply to Paul Silaghi [QA] from comment #3)
> Strange I couldn't reproduce on another machine with Ubuntu 12.10 x86.
That was with NVIDIA card.

> So it's either video card or x86/x64 related.
On another machine (Ubuntu 13.04 x86) with ATI Radeon HD 5450, FF closed unexpectedly while loading the game. So, I would say there is something wrong with webGL on ATI cards.

Comment 5

[u279076]

Paul, please try to find a more narrow regression window for this bug.

Comment 6

[Paul Silaghi, QA [:pauly]]

On FF <= 16, the game won't run.
Starting with FF 17, this bug is reproducible.
So, doesn't seem to be a regression.
Trying again, I couldn't reproduce this issue on any other machine, so I guess the impact isn't that big.