Launchpad has imported 6 comments from the remote bug at https://bugzilla.mozilla.org/show_bug.cgi?id=1157112.
If you reply to an imported comment from within Launchpad, your comment will be sent to the remote bug automatically. Read more about Launchpad's inter-bugtracker facilities at https://help.launchpad.net/InterBugTracking. ------------------------------------------------------------------------ On 2015-04-22T05:38:44+00:00 Basil Titovchenko wrote: Created attachment 8595754 canvas-firefox.png User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:37.0) Gecko/20100101 Firefox/37.0 Build ID: 20150403141925 Steps to reproduce: Ubuntu: 14.04.2 LTS (32bit and 64bit versions) Firefox: Mozilla Firefox for Ubuntu canonical - 1.0 Installed: 36.0.1+build2-0ubuntu0.14.04.1 Run this HTML in Firefox: ---------------------------- <!DOCTYPE html> <html> <head> <title>Ray Circle</title> </head> <body> <canvas height='640' width='640' id='example'>You should update your browser.</canvas> <script> var example = document.getElementById("example"), ctx = example.getContext('2d'), PIdiv180 = Math.PI / 180, size = 480; ctx.beginPath(); for (var i = 0; i < 360; i++) { ctx.moveTo(320, 320); ctx.lineTo(320 + Math.sin(i * PIdiv180) * 320, 320 + Math.cos(i * PIdiv180) * 320); } ctx.stroke(); </script> </body> </html> ---------------------------- Actual results: See attached file canvas-firefox.png Expected results: The same figure without artefacts. Reply at: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1434404/comments/5 ------------------------------------------------------------------------ On 2015-04-22T12:33:58+00:00 Alice0775-t wrote: Created attachment 8595941 reporter's testcase Reply at: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1434404/comments/6 ------------------------------------------------------------------------ On 2015-04-22T12:35:54+00:00 Alice0775-t wrote: Reproduced on ubuntu since Firefox4.0 Reply at: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1434404/comments/7 ------------------------------------------------------------------------ On 2015-04-23T05:14:33+00:00 Alice0775-t wrote: Regression window: https://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=2968d19b0165&tochange=29a6a85fab8e Suspect: f236632a9747 Jeff Muizelaar — Bug 542605. Update cairo to 12d521df8acc483b2daa844d4f05dc2fe2765ba6. r=vlad,jwatt,bas Reply at: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1434404/comments/8 ------------------------------------------------------------------------ On 2015-05-21T16:25:55+00:00 Bas-c wrote: This is a very old regression, I don't think this is a high priority sadly. Reply at: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1434404/comments/9 ------------------------------------------------------------------------ On 2018-01-10T06:55:35+00:00 Basil Titovchenko wrote: Seems now it draws well in Firefox Quantum 57.0.4 (64-bit), Ubuntu 16.04 Reply at: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1434404/comments/10 ** Changed in: firefox Importance: Medium => Unknown -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to firefox in Ubuntu. https://bugs.launchpad.net/bugs/1434404 Title: Canvas path rendering bug Status in Mozilla Firefox: Confirmed Status in firefox package in Ubuntu: Fix Released Bug description: Ubuntu: 14.04.2 LTS (32bit and 64bit versions) Firefox: Mozilla Firefox for Ubuntu canonical - 1.0 Installed: 36.0.1+build2-0ubuntu0.14.04.1 I wrote the simple script to draw the circle composed by lines from it center. In Ubuntu Firefox I've got some weird looking artefacts, while in other OSes or browsers all seems to be ok (I've tested Firefox, Opera and Chrome in Windows, Chrome and Opera in Ubuntu). To reproduce: ------------------- 1. Open source file circle360.html in Firefox on Ubuntu; 2. Expected to see the correctly drawin picture; 3. Instead I see the picture with drawing artefacts (look at attached picture canvas-firefox.png) Source file: circle360.html ------------------------------------- <!DOCTYPE html> <html> <head> <title>Ray Circle</title> </head> <body> <canvas height='640' width='640' id='example'>You should update your browser.</canvas> <script> var example = document.getElementById("example"), ctx = example.getContext('2d'), PIdiv180 = Math.PI / 180, size = 480; ctx.beginPath(); for (var i = 0; i < 360; i++) { ctx.moveTo(320, 320); ctx.lineTo(320 + Math.sin(i * PIdiv180) * 320, 320 + Math.cos(i * PIdiv180) * 320); } ctx.stroke(); </script> </body> </html> ------------------------------------- To manage notifications about this bug go to: https://bugs.launchpad.net/firefox/+bug/1434404/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
