Open
Bug 495802
Opened 15 years ago
Updated 2 years ago
JavaScript text in a moving object shakes/vibrates.
Categories
(Core :: Graphics: WebRender, defect)
Core
Graphics: WebRender
Tracking
()
NEW
People
(Reporter: deprecationmail, Unassigned)
References
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Details
(Whiteboard: chromeexperiments)
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; sv-SE; rv:1.9.1pre) Gecko/20090601 Shiretoko/3.5pre
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.0; sv-SE; rv:1.9.1pre) Gecko/20090601 Shiretoko/3.5pre
As a follow up of https://bugzilla.mozilla.org/show_bug.cgi?id=495607 , the text inside the "main" ball is now shaking (or if you prefer, vibrating). Compare to Google Chrome and you'll see the difference.
Reproducible: Always
Steps to Reproduce:
1. Visit http://mrdoob.com/projects/chromeexperiments/ball_pool
2. Roll the "main" ball around.
3. Does the text shake?
Actual Results:
The text is shaking in a annoying way.
Expected Results:
It should follow the rotation of the ball smoothly.
Bug 527707 fixes this on Windows Vista and Windows 7, but other OS's which the patch does not cover, still has the issue.
Depends on: 527707
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Updated•14 years ago
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Whiteboard: chromeexperiments
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Comment 2•14 years ago
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Magne, is this still valid in firefox 4 or trunk? I only have windows, so I can't test other OS's.
Using OS X, I can confirm that it is still happening with current trunk. Possibly not as much as when I filed this bug, but it still clear when the ball moves/rolls slowly.
Severity: major → normal
OS: Windows Vista → All
Hardware: x86 → All
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Updated•14 years ago
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Assignee: nobody → general
Status: UNCONFIRMED → NEW
Component: General → JavaScript Engine
Ever confirmed: true
Product: Firefox → Core
QA Contact: general → general
Version: unspecified → 2.0 Branch
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Comment 4•14 years ago
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This is gfx, not JS, per comment 1.
Assignee: general → nobody
Component: JavaScript Engine → Graphics
QA Contact: general → thebes
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Comment 5•14 years ago
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This is due to GDI rounding glyph positions to pixel boundaries I believe, I do not believe on traditional XP systems there's anything we can do about this.
Why do we keep rerendering the text though? Seems like it should draw once and then, being an active transform, we shouldn't rerender the element until it stops.
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Updated•2 years ago
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Severity: normal → S3
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Comment 7•2 years ago
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Still reproduces
Severity: S3 → --
Component: Graphics → Graphics: WebRender
Version: 2.0 Branch → unspecified
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Comment 8•2 years ago
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(In reply to Gregory Pappas [:gregp] from comment #7)
Still reproduces
On which platform(s)? Glyph pixel-snapping behavior (which is what this sounds like) is likely to vary depending on the backend...
Flags: needinfo?(gp3033)
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Comment 9•2 years ago
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(In reply to Jonathan Kew [:jfkthame] from comment #8)
On which platform(s)? Glyph pixel-snapping behavior (which is what this sounds like) is likely to vary depending on the backend...
I tested Fedora 37 and a Windows 10 VM.
Flags: needinfo?(gp3033)
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Description
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