Print is blurry when printing multiple canvas elements
Reported by
bartekko...@gmail.com,
Oct 27 2016
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Issue descriptionUserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.71 Safari/537.36 Steps to reproduce the problem: 1. Go to https://bkozera.github.io/printIssue.html (or create a html page with many canvas elements - in my example it's 60 canvas elements, size 1000 x 1000) 2. Open print dialog (File-> Print or ctrl/cmd + P) 3. When viewing the preview scroll to page 52 or more (or print page as PDF and scroll to page 52) What is the expected behavior? Text should not be blurry (just like on pages 1-51) What went wrong? Text is blurry but only starting from certain page. Did this work before? N/A Does this work in other browsers? Yes Chrome version: 54.0.2840.71 Channel: stable OS Version: OS X 10.11.6 Flash Version: Shockwave Flash 23.0 r0 It's not only about text, the whole canvas element is being printed blurry . I suspect there might be some limit of canvas elements displayed on the page with a certain size.
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Oct 27 2016
I think should be in component:Internals>GPU>Canvas2D not Blink>Canvas - my mistake. Also: I was able to reproduce this on Windows using same Chrome version. There's no such issue in Firefox.
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Oct 27 2016
Reproduced using Chrome 54 on Windows 7.
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Oct 27 2016
Reproducible on Linux as well. On Linux, with earlier builds, the behavior is as follows: 350000 - webpage does not even display, print preview is 1 page and blank 370000 - webpage displays, but the first page is blurry in print preview 400000 - same as 370000 420000 - first page in print preview is no longer blurry Between [400000, 420000], we find the behavior change happened here: https://chromium.googlesource.com/chromium/src/+log/697e6fc2d3a21124b983953086d525576fdf15f5..7570c47baec364f3e0901d139e0fd1d74c00d6e2 -> r412920 -> +junov to help triage.
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Oct 28 2016
halcanary@: could you also help take a look?
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Nov 4 2016
Will investigate.
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Nov 28 2016
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Nov 28 2016
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Nov 29 2017
This issue has been Available for over a year. If it's no longer important or seems unlikely to be fixed, please consider closing it out. If it is important, please re-triage the issue. Sorry for the inconvenience if the bug really should have been left as Available. If you change it back, also remove the "Hotlist-Recharge-Cold" label. For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot
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Dec 1 2017
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May 4 2018
Testing this on Mac for Chrome 66.0.3359.139. It is not reproducible. Will test on Win/Linux later.
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May 7 2018
This bug is also not reproducible for Chrome 66.0.3359.139 in Linux and Chrome 66.0.3359.139 on win 10. Marking it as fixed now and please revive it if it's incorrect.
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May 7 2018
xlai: It's still blurry on Linux here.
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May 7 2018
thestig@: what is your chrome version when you test it? Maybe you need to update Chrome. I tried again and am still unable to reproduce it on Linux for 66.0.3359.139. I'm attaching the screenshots as proof: 1) Page 1 and Page 58 of the print review does not show obvious difference in terms of rendering quality, unlike what's claimed in the requirement. 2) Page 58 of the print review does not show obvious difference with Firefox's print review in terms of rendering quality. I'm putting this issue to Available as the Chrome printing team might have some ideas on what to do with it.
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May 7 2018
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May 7 2018
This issue is no longer of interest to me. I am ok with this being closed.
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May 9 2018
+familta FYI. Do we know if this is related to bug 481429 ? The original bug reporter is no longer interested in this bug, but I'm wondering if you are.
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Jul 25
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