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PIX can analyze a program without the need to modify it. However, more powerful analysis is possible when you add one or more of the following function calls to the target program.
| Function | Description |
|---|---|
| D3DPERF_BeginEvent | Mark the beginning of a user-defined event. PIX can use this event to trigger an action. |
| D3DPERF_EndEvent | Mark the end of a user-defined event. PIX can use this event to trigger an action. |
| D3DPERF_GetStatus | Determine the state of the profiler from the target program. |
| D3DPERF_QueryRepeatFrame | Determine if a performance profiler is requesting that the current frame be resubmitted to Direct3D for performance analysis. This function is not currently implemented. |
| D3DPERF_SetMarker | Mark an instantaneous event. PIX can use this event to trigger an action. |
| D3DPERF_SetOptions | Set profiler options specified by the target program. |
| D3DPERF_SetRegion | Mark a series of frames with the specified color and name in the PIXRun file. This function is not currently implemented. |