User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b8pre) Gecko/20101012 Firefox/4.0b8pre Build Identifier: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b8pre) Gecko/20101012 Firefox/4.0b8pre The error only appears with a background as the page, if he does variation some leave slow rendering. The problem is both windows and linux. (traduction by google traductor, sorry for my English) Reproducible: Always Steps to Reproduce: 1.Go to http://www.setingo.com/demo_problem.html 2.Wait 3.Scroll and be happy my friend Actual Results: The background render slooooowwww... Expected Results: render more fast This background css is from http://www.omgubuntu.co.uk The problem is in windows 7 x64 and ubuntu 10.10 x64.
Component: General → Graphics
Product: Firefox → Core
QA Contact: general → thebes
Summary: SLOW (≈10 seconds) rendering of background without images → slow Rendering/Scrolling with Background Image using -moz-linear-gradient
Created attachment 482571 [details] Reporter's Testcase Confirmed on WinXP with Build built from http://hg.mozilla.org/mozilla-central/rev/2593c8c8af8b.
> Created attachment 482571 [details] This code is... stupid: background-size: 1px 199px; repeats a 1px wide background. background-size: 100% 199px; is much faster.
is true... the css is stupid. well, its not a bug, is a bad design of www.omgubuntu.co.uk. sorry for the unnecessary notification.
Status: UNCONFIRMED → RESOLVED
Last Resolved: 8 years ago
Resolution: --- → INVALID
We are not committed to handle stupid code badly. People with more knowledge should decide about this.
Status: RESOLVED → REOPENED
Ever confirmed: true
Resolution: INVALID → ---
Summary: slow Rendering/Scrolling with Background Image using -moz-linear-gradient → slow Rendering/Scrolling with Background Image using -moz-linear-gradient and background-size:1px ...;
Status: UNCONFIRMED → NEW
Ever confirmed: true
It's pretty fast on Mac actually. I wonder why. It would be pretty easy to make this faster. We probably should, but we won't do it for Firefox 4 probably. In the meantime, please do send feedback to the size recommending 100% instead.
This is WFM using Mozilla/5.0 (Windows NT 6.1; WOW64; rv:16.0) Gecko/16.0 Firefox/16.0a1 ID:20120617030532 with HWA on. Explicitly turning off Azure exhibits the originally reported Issue. Thus I think this has been fixed since Azure Landing.
Mozilla/5.0 (Windows NT 5.1; rv:16.0) Gecko/16.0 Firefox/16.0a1 Not fixed, the second testcase has significant better scrolling performance on my system.
both the attached testcases scroll fully smooth for me on the latest Nightly 21.
confirming comment 9 with Nightly 21 from 2013-01-21 -> WORKSFORME
Status: NEW → RESOLVED
Last Resolved: 8 years ago → 5 years ago
Resolution: --- → WORKSFORME
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