Hi,
just experienced some issues with some OpenCL composition in my app. The crash happening when the quit-ing process started, at that point when the renderer thread released. The QCRenderer object released before successfully, but that time I call CVDisplayLinkStop (tested with an NSTimer based rendering loop as well) the app crashes. Here is the thread thread: Thread 5 Crashed: 0 libc++abi.dylib 0x92cc3d49 __dynamic_cast + 57 1 com.apple.opencl 0x91ce297e 0x91cd8000 + 43390 2 com.apple.opencl 0x91cf8637 clReleaseCommandQueue + 25 3 com.apple.QuartzComposer 0x974e27a9 _DictionaryApplierFunction + 17 4 com.apple.CoreFoundation 0x9b737b20 __CFDictionaryApplyFunction_block_invoke_1 + 32 5 com.apple.CoreFoundation 0x9b716e92 CFBasicHashApply + 114 6 com.apple.CoreFoundation 0x9b737af2 CFDictionaryApplyFunction + 194 7 com.apple.QuartzComposer 0x974e278f _ThreadOpenCLContextDestroy + 50 8 libsystem_c.dylib 0x998d4e0c _pthread_tsd_cleanup + 85 9 libsystem_c.dylib 0x9988d64c _pthread_exit + 146 10 libsystem_c.dylib 0x9988d9a0 pthread_exit + 33 11 com.apple.Foundation 0x961f9e3c +[NSThread exit] + 18 12 com.apple.Foundation 0x961f9ded __NSThread__main__ + 1606 13 libsystem_c.dylib 0x9988bed9 _pthread_start + 335 14 libsystem_c.dylib 0x9988f6de thread_start + 34 I think the problem is not with my app, but with QC handling OpenCL context destroy on a background thread, am I right? Thanks, Tamas
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