PFNGLASYNCCOPYBUFFERSUBDATANVXPROCDart typedef
        PFNGLASYNCCOPYBUFFERSUBDATANVXPROCDart =
     int Function(int waitSemaphoreCount, Pointer<Uint32>  waitSemaphoreArray, Pointer<Uint64>  fenceValueArray, int readGpu, int writeGpuMask, int readBuffer, int writeBuffer, Pointer<NativeType>  readOffset, Pointer<NativeType>  writeOffset, Pointer<Uint32>  size, int signalSemaphoreCount, Pointer<Uint32>  signalSemaphoreArray, Pointer<Uint64>  signalValueArray)
    
    
    
Implementation
typedef PFNGLASYNCCOPYBUFFERSUBDATANVXPROCDart =
    int Function(
      int waitSemaphoreCount,
      Pointer<Uint32> waitSemaphoreArray,
      Pointer<Uint64> fenceValueArray,
      int readGpu,
      int writeGpuMask,
      int readBuffer,
      int writeBuffer,
      Pointer<NativeType> readOffset,
      Pointer<NativeType> writeOffset,
      Pointer<Uint32> size,
      int signalSemaphoreCount,
      Pointer<Uint32> signalSemaphoreArray,
      Pointer<Uint64> signalValueArray,
    );