Open Bug 873401 Opened 9 years ago Updated 3 months ago

svg rotated text or lines render differently when animated. Leads to jittering

Categories

(Core :: SVG, defect)

18 Branch
x86_64
Windows 7
defect
Not set
normal

Tracking

()

Tracking Status
firefox21 --- affected
firefox22 --- affected
firefox23 --- affected
firefox24 --- affected
firefox-esr17 --- unaffected

People

(Reporter: timofey.illarionov, Unassigned)

References

Details

(Keywords: regression)

Attachments

(2 files)

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:21.0) Gecko/20100101 Firefox/21.0 (Beta/Release)
Build ID: 20130511120803

Steps to reproduce:

created svg text with transform="rotate(0 20,40)"
javascript interval changes rotation angle by 1 every 500ms


Actual results:

Visible jittering between blurry and clear text.


Expected results:

Text is not jittering.
Can you attach a testcase please?
Flags: needinfo?(timofey.illarionov)
Component: Untriaged → SVG
Product: Firefox → Core
Attached file testcase
added testcase
also jsfiddle link http://jsfiddle.net/Pf6zR/3/ if needed
Flags: needinfo?(timofey.illarionov)
Attachment #750954 - Attachment mime type: text/plain → text/html
It works as expecting if set svg.display-lists.painting.enabled to false
Blocks: 776054
Status: UNCONFIRMED → NEW
Ever confirmed: true
Version: 21 Branch → 18 Branch
Keywords: regression
Transitioning between active and inactive layers I guess? Use CSS animations instead :-)
Duplicate of this bug: 897892
Summary: svg rotated text is blurry at first, then it becomes clear. Leads to jittering → svg rotated text or lines render differently when animated. Leads to jittering
Duplicate of this bug: 913139
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