RESOLVED WONTFIX 52820
REGRESSION(nightly build): My asteroids WebGL game pauses frequently beneath CALayerDisplayIfNeeded 
https://bugs.webkit.org/show_bug.cgi?id=52820
Summary REGRESSION(nightly build): My asteroids WebGL game pauses frequently beneath ...
astrodud
Reported 2011-01-20 10:03:25 PST
The previous nightly worked great but with the latest nightly build, my WebGL game pauses frequently (I'm assuming because of garbage collection). Nothing in my game's code has changed between the two tests. Please see http://astrodud.isgreat.org/asteroids/?speed=default for an example.
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Geoffrey Garen
Comment 1 2011-01-20 14:12:17 PST
Is there anything special you need to do to get the game to pause?
Geoffrey Garen
Comment 2 2011-01-20 14:28:22 PST
I sample a nightly running this app. I saw a little GC activity in the sample, but this backtrace was 17X more prominent: 7718 Thread_390378 DispatchQueue_1: com.apple.main-thread (serial) 6412 0x10000a1c0 6412 NSApplicationMain 6412 -[NSApplication run] 6412 0x1000162f4 6412 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] 6412 _DPSNextEvent 6412 BlockUntilNextEventMatchingListInMode 6412 ReceiveNextEventCommon 6412 RunCurrentEventLoopInMode 6412 CFRunLoopRunSpecific 6412 __CFRunLoopRun 5991 __CFRunLoopDoObservers 5956 CA::Transaction::commit() 5955 CA::Context::commit_transaction(CA::Transaction*) 5954 CALayerDisplayIfNeeded 5921 -[WebGLLayer display] 5916 -[CAOpenGLLayer _display] 5897 CAOpenGLLayerDraw(CAOpenGLLayer*, double, CVTimeStamp const*, unsigned int) 5806 -[WebGLLayer drawInCGLContext:pixelFormat:forLayerTime:displayTime:] 5777 glFinish_Exec 5774 gldFinish 5756 IOConnectCallMethod 5756 io_connect_method 5750 mach_msg 5750 mach_msg_trap
astrodud
Comment 3 2011-01-20 15:27:50 PST
(In reply to comment #1) > Is there anything special you need to do to get the game to pause? Press 'p'.
astrodud
Comment 4 2011-01-20 15:29:58 PST
(In reply to comment #1) > Is there anything special you need to do to get the game to pause? By 'pause' I mean very short interruptions in the otherwise smooth animation. Not sure if it's caused by gc (that was just an assumption). Seems to happen every couple of seconds and is quite short (fractions of a second).
astrodud
Comment 5 2011-01-20 15:34:55 PST
(In reply to comment #3) > (In reply to comment #1) > > Is there anything special you need to do to get the game to pause? > > Press 'p'. Oops, misunderstood your question here.
Simon Fraser (smfr)
Comment 6 2011-02-24 22:06:10 PST
> with the latest nightly build Do you have the build number handy?
Brent Fulgham
Comment 7 2014-01-09 20:49:19 PST
Closing due to no activity, and inability to access the sample case. The game URL redirects to a link farm now. Please reopen with new information if you still encounter this problem on a recent nightly.
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