628854 - Content is blured for a while after applying -moz-transition: scale(N)

Status: RESOLVED FIXED

(Core :: Graphics, defect)

Description

[gadjo]

User-Agent:       Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b10pre) Gecko/20110125 Firefox/4.0b10pre
Build Identifier: 

When element's scale changes it becames blured and after a while is properly repainted

Reproducible: Always

Steps to Reproduce:
1. Open the testcase
2. Move mouse in and out from content window

Actual Results:  
When mouse cursor goes off window the "Hello" div becames blured for a while


Expected Results:  
Div content should not be blured

Comment 1

[gadjo]

Attachment: testcase

Comment 2

[Robert O'Callahan (:roc) (email my personal email if necessary)]

We could reduce the activity timeout maybe.

Comment 3

[Robert O'Callahan (:roc) (email my personal email if necessary)]

Hmm, the comment here is a lie:
http://mxr.mozilla.org/mozilla-central/source/layout/generic/nsFrame.cpp#3962
4 generations of 100ms each means 300-400ms.

We should try setting GENERATION_MS to 25. That should help quite a bit.

Comment 4

[gadjo]

Attachment: testcase with transition

Comment 5

[Katelyn Gadd (:kael)]

Lowering GENERATION_MS addresses the first test case, but it seems to be impossible to fix the transition test case by adjusting that value - at best, I can get it to alternate rapidly between blurred and high resolution in the transition case, and even that requires lowering GENERATION_MS to 1. Do we want to try and tackle both test cases with a fix, or stick with fixing the non-transition test case for now?

Comment 6

[Robert O'Callahan (:roc) (email my personal email if necessary)]

Actually we should finish bug 586683 first.

Comment 7

[gadjo]

Looks much better after landing bug 586683, there is still little difference between maximized state right after transision end and 1-2 senconds later, but it's not a big difference and it looks more like a problem with scaling fonts

Comment 8

[Robert O'Callahan (:roc) (email my personal email if necessary)]

Thanks, I'll call this fixed.

Comment 9

[gadjo]

Fixed bug 633120 for the font issue