public void AlphaComp(byte alpha1, NPPImage_8uC3 src2, byte alpha2, NPPImage_8uC3 dest, NppiAlphaOp nppAlphaOp) { status = NPPNativeMethods.NPPi.AlphaCompConst.nppiAlphaCompC_8u_C3R(_devPtrRoi, _pitch, alpha1, src2.DevicePointerRoi, src2.Pitch, alpha2, dest.DevicePointerRoi, dest.Pitch, _sizeRoi, nppAlphaOp); Debug.WriteLine(String.Format("{0:G}, {1}: {2}", DateTime.Now, "nppiAlphaCompC_8u_C3R", status)); NPPException.CheckNppStatus(status, this); }