Closed
Bug 719447
Opened 13 years ago
Closed 10 years ago
Gradients render slow and make checkerboarding happen while panning
Categories
(Firefox for Android Graveyard :: General, defect, P1)
Tracking
(blocking-fennec1.0 -, fennec+)
RESOLVED
INVALID
People
(Reporter: wlach, Unassigned)
References
(Depends on 1 open bug)
Details
(Whiteboard: [gfx])
This is probably covered by other bugs, but it can't hurt to file something for this explicitly since it's a very noticeable regression from XUL fennec. Steps to reproduce: 1. Load taskjs.org 2. Make two swipes down The difference between XUL and native is pretty stark on the LG G2X: XUL checkerboards for only a fraction of a second, while you see the checkerboard for a good few seconds on native. Here's some demonstration videos: http://people.mozilla.com/~wlachance/taskjs_xul.webm http://people.mozilla.com/~wlachance/taskjs_native.webm I've got an eideticker test to automatically do this. I can post updated videos as things are fixed.
Reporter | ||
Comment 1•13 years ago
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(CCing folks on the eideticker thread, as well as mobile devs responsible for this stuff who might be interested)
Updated•13 years ago
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Assignee: nobody → chrislord.net
tracking-fennec: --- → 11+
Priority: -- → P1
Updated•12 years ago
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Keywords: fennecnative-betablocker
Updated•12 years ago
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Keywords: fennecnative-releaseblocker
Updated•12 years ago
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Keywords: fennecnative-releaseblocker
Comment 3•12 years ago
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This is still rather ugly on a Maple tinderbox build. Though there are still a number of checkerboarding improvements that the gfx team have in the works. Leaving qawanted so that we can re-check after those land.
Updated•12 years ago
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blocking-fennec1.0: --- → beta+
Updated•12 years ago
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Status: NEW → ASSIGNED
Updated•12 years ago
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Whiteboard: [gfx]
Comment 4•12 years ago
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Still able to reproduce on the recently merged Maple builds on Nightly (03/19). -- Tested via Galaxy Nexus (Android 4.0.2) Nightly (03/19) Mozilla/5.0 (Android; Mobile; rv:14.0) Gecko/14.0 Firefox/14.0a1
Keywords: qawanted
Reporter | ||
Comment 5•12 years ago
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Chris Lord mentioned on irc that it was speculated that the issue is with radial gradients on this page. I can confirm this. I was able to reduce the checkerboarding to almost nothing by changing this: body { margin: 0; border-top: solid 2px #707070; padding: 80px 0; background-image: url("noise.png"), -webkit-gradient(radial, 50% 0%, 0, 50% 0%, 750, color-stop(0%, #fff), color-stop(100%, #d0e0ff)); background-image: url("noise.png"), -webkit-radial-gradient(top center, #fff, #d0e0ff 750px); background-image: url("noise.png"), -moz-radial-gradient(top center, #fff, #d0e0ff 750px); background-image: url("noise.png"), -o-radial-gradient(top center, #fff, #d0e0ff 750px); background-image: url("noise.png"), radial-gradient(top center, #fff, #d0e0ff 750px); } To this: body { margin: 0; border-top: solid 2px #707070; padding: 80px 0; background-image: url("white.png"); } I guess most likely this means that we're checkerboarding because radial gradients are really slow to draw. I notice almost no checkerboarding on this page on my iPhone or with the stock browser.
Reporter | ||
Comment 6•12 years ago
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(of course this doesn't explain why native performs so much worse on this metric than xul fennec, when they both use ~ the same drawing code)
Comment 7•12 years ago
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(In reply to William Lachance (:wlach) from comment #6) > (of course this doesn't explain why native performs so much worse on this > metric than xul fennec, when they both use ~ the same drawing code) I expect that the default cache viewport size in xul-fennec actually means the entire page fits into the display-port, and so you would never see checker-boarding.
Updated•12 years ago
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blocking-fennec1.0: beta+ → ?
Updated•12 years ago
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blocking-fennec1.0: ? → +
Updated•12 years ago
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blocking-fennec1.0: + → ?
Updated•12 years ago
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blocking-fennec1.0: ? → +
Updated•12 years ago
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tracking-fennec: 11+ → 15+
blocking-fennec1.0: + → -
Updated•12 years ago
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Summary: Scrolling taskjs.org produces quite a bit of checkerboarding vs. XUL Fennec → Gradients render slow and make checkerboarding happen while panning
Comment 9•12 years ago
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Snorp, Blassey said you are working on something about handling gradients GPU.
Assignee: chrislord.net → snorp
tracking-fennec: 15+ → +
Comment 10•12 years ago
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(In reply to Kevin Brosnan [:kbrosnan] from comment #9) > Snorp, Blassey said you are working on something about handling gradients > GPU. Definitely not me. Maybe Cwiiis? Bug 795247
Comment 11•10 years ago
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I'm not sure that this is even still the case now, but checkerboarding is not a huge concern anymore (because of Gecko improvements and better commodity hardware).
Assignee: chrislord.net → nobody
Status: ASSIGNED → UNCONFIRMED
Ever confirmed: false
Reporter | ||
Comment 12•10 years ago
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Yeah, I don't think this bug really has anything actionable in it anymore.
Status: UNCONFIRMED → RESOLVED
Closed: 10 years ago
Resolution: --- → INVALID
Assignee | ||
Updated•3 years ago
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Product: Firefox for Android → Firefox for Android Graveyard
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Description
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