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Identifying Unmatched Calls

Many calls in OpenGL are used as sets, such as:

• glBegin and glEnd

• glEnable and glDisable

You can check the # of Calls column in the Statistics window to make sure that these (and similar sets) are always matched in your application. For example, if you find 5 glBegin calls but only 3 glEnd call, you should modify your code so that you have the same number of each. Unmatched calls typically are a symptom of unneeded code and always indicate imprecise code. Call sets should always match within a frame.

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