hi all, Low-level Native Plugin Interface(for unity 3.5)

i am obtain d3ddevice in UnitySetGraphicsDevice, and to as drawTexture drawLine in UnityRenderEvent,my programming is can running, but it is error to while occurred stoped ntdll.dll in a moment. my programming look at as dead at this time.

vs.net2008 (debug) (thread window) 0 5516 Main Thread Main Thread Event::WaitForSignal Normal 0 0 4868 Worker Thread Win32 Thread 77cc013d Normal 0 0 5612 Worker Thread thread_start mono_sem_timedwait Normal 0 0 3940 Worker Thread threadstart _crtCompareStringA Normal 0 0 3956 Worker Thread UnityGfxDeviceWorker D3D9VBO::UpdateVertexData Normal 0 0 5780 Worker Thread Win32 Thread 77cbf8b1 Normal 0 0 5660 Worker Thread UnityWorker JobScheduler::WorkLoop Normal 0 0 4752 Worker Thread UnityWorker JobScheduler::WorkLoop Normal 0 0 5808 Worker Thread UnityWorker JobScheduler::WorkLoop Normal 0 0 5056 Worker Thread _mainJobQueueThreadFunc@4 77cbf8b1 Normal 0 0 1168 Worker Thread _mainJobQueueThreadFunc@4 77cbf8b1 Normal 0 0 3364 Worker Thread _mainJobQueueThreadFunc@4 77cbf8b1 Normal 0 0 5176 Worker Thread _mainJobQueueThreadFunc@4 77cbf8b1 Normal 0 0 > 3916 Worker Thread UnitySubstanceThread Thread::Sleep Lowest 0 (call stack window)

ntdll.dll!77cbfd71()

[Frames below may be incorrect and/or missing, no symbols loaded for ntdll.dll] ntdll.dll!77cbfd71() KernelBase.dll!760131bb() KernelBase.dll!7601318f() souguo.exe!Thread::Sleep(double time=1.1996997797111817e-296) Line 301 C++ souguo.exe!SubstanceSystem::ThreadMain(void data=0x04e2c8e0) Line 462 + 0x11 bytes C++ souguo.exe!Thread::RunThreadWrapper(void ptr=0x04e2c91c) Line 238 + 0x9 bytes C++ kernel32.dll!75bb339a() ntdll.dll!77cd9ef2() ntdll.dll!77cd9ec5()