1058506 - Some random content sometimes show instead of the low-res tiles on b2g

Status: RESOLVED DUPLICATE of bug 1013385

(Core :: Graphics: Layers, defect)

Description

[Nicolas Silva [:nical]]

See this video: https://dl.dropboxusercontent.com/u/7742672/VID_20140825_121546.mp4

This can happen when scrolling very fast. Vivien has a patch that reduces the overpaint in some of the gaia apps and this patch somehow makes this bug much more noticeable, although it can be reproduced on master with the sms app.

Comment 1

[Vivien Nicolas (:vingtetun) (:21) - (NOT reading bugmails, needinfo? please)]

I can reproduce this on master on the call log and on the sms app. I have a few patches that reduce the overpaint of various apps as dependencies of bug 1048009 and so I can see this pretty much everywhere now.

Comment 2

[Vivien Nicolas (:vingtetun) (:21) - (NOT reading bugmails, needinfo? please)]

One interesting things to note is the fact that the random content is replaced by opaque black if the fps counter is disabled.

Also I don't even need to scroll very fast. I can see with overscroll as well, very easily on the clock app with the patch from bug 1059158, or on the settings app with the patch from bug 1050727.

Comment 3

[Vivien Nicolas (:vingtetun) (:21) - (NOT reading bugmails, needinfo? please)]

Milan, any chance someone on your team has time to look at that ?

Comment 4

[Milan Sreckovic [:milan] (needinfo for best results)]

Yes, this is why I cc-ed Kats on the bug.  I'm assuming this is on 1G Flame?

Comment 5

[Vivien Nicolas (:vingtetun) (:21) - (NOT reading bugmails, needinfo? please)]

(In reply to Milan Sreckovic [:milan] from comment #4)
> Yes, this is why I cc-ed Kats on the bug.  I'm assuming this is on 1G Flame?

Yep. I didn't tried 256mb flame in case there is any difference.

Comment 6

[Kartikaya Gupta (email:[e-mail])]

Sound like a dupe of bug 1013385. When we checkerboard we end up showing whatever is behind the layer which is often random garbage.