CPU or GPU bound? profiling OpenGL application

I've got an OpenGL application which I'm afraid is GPU bound.

How can I be sure that's the case?

And if it is, 开发者_C百科how can I profile the code run by the GPU?

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I would also check it with AMD GPU PerfStudio.

It will analyse your GPU and CPU usage and show relative load values.

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If you are using Windows, Linux or Mac, (well, a computer!) give a try to gDEBugger.

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If your OpenGL thread should uses less than one core you are not CPU bound. If you're running at 60Hz you're probably limited by vsync.

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gDEBugger no longer supports OSX.. For OSX users (and perhaps other OS's) the Intel Graphics Performance Analyser might be worth a look

https://software.intel.com/en-us/gpa

Info here