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通常情况下，OpenGL指令不是立即执行的。它们首先被送到指令缓冲区，然后才被送到硬件执行。glFinish和glFlush都是强制将命令缓冲区的内容提交给硬件执行。一、glFinish()函数OenGL手册上关于glFinish：NameglFinish — block until all GL execution is completeC Specificationvoid glFinish(void);DescriptionglFinish does not return until the effects of all previously called GL commands are Read More