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Setting a Breakpoint

Your application can programmatically set breakpoints when it is attached to OpenGL Profiler.

To set a breakpoint:

1. Include the CGLProfiler.h and CGLProfilerFunctionEnum.h header files in your application.

2. Declare an array of three GLint values, set to the following:

   • The function ID, as defined in the header file CGLProfilerFunctionEnum.h.

   • The logical OR of kCGLProfBreakBefore or kCGLProfBreakAfter, indicating how you want the breakpoint to stop—before entering the OpenGL function, on return from it, or both.

   • A Boolean that turns the breakpoint on or off.

3. Call the function CGLSetOption, passing the array as a parameter.

Listing 4-1 shows code that sets a breakpoint before the CGLFlushDrawable function.

Listing 4-1  Code that sets a breakpoint

#include "OpenGL/CGLProfiler.h"

#include "OpenGL/CGLProfilerFunctionEnum.h"

...

   GLint myBreakpoint[] = { kCGLFECGLFlushDrawable, kCGLProfBreakBefore, 1;}

   CGLSetOption( kCGLGOEnableBreakpoint, myBreakpoint );

...

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