[Webkit-unassigned] [Bug 131790] New: canvas drawing problems

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Thu Apr 17 06:29:50 PDT 2014


           Summary: canvas drawing problems
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Macintosh Intel
               URL: http://www.puzzlescript.net/play.html?p=10983341
        OS/Version: Mac OS X 10.9
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: New Bugs
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: analytic at gmail.com

Maximize  safari (this is on a retina macbook, which might be relevant).  Load up the link, maximize the window, press x to start a new game.  

You're in control of the little white dot moving on a blue background.  If you move around the arrow keys, after 10 or so moves the whole screen suddenly becomes white.  I don't know what's causing this - somehow the canvasses for the tiles are getting messed up.  I can't tell 100% that this isn't a bug in my engine, however

1 - It doesn't happen in safari 7.0.3
2 - It doesn't happen on chrome or firefox
3 - It doesn't happen if you have the debug window opened (either on the panel below, or in a separate window).
4 - no error messages are generated by safari that I can see

The engine's quite complicated - it would take a lot of work to put together a test case, but I hope mentioning this is still of some use - let me know if I can be of any help.

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