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When Things Go Wrong

If you don't set up threading correctly, you'll most likely see your application freeze or crash. Things typically go wrong when your application introduces a command to the graphics processor that violates threading practices. The bad command will cause the processor to hang. The CPU blocks against that, causing any drawing onscreen to stop and the spinning wait cursor to appear.

You can use OpenGL Profiler to check thread safety in OpenGL. In the breakpoints window, set the "Break on thread error" option to check whether a problem is due to a thread error.

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