It appears that touch events are happening on a different thread then OpenGL rendering. Is this the case? The context for this question is a particle system I am building that uses touch events to trigger OpenGL drawing. Since OpenGL drawing is rather heavyweight I am concerned about threading implications.It appears that touch events are happening on a
阅读背景：
触摸事件和OpenGL绘图。它们是在不同的线程上发生的吗
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