2 bugs

[cvtendent]

After bulid it with Qt 5.14 MinGW-7.3.0 64-bit on Windows 10,the app can run,but find two bugs.

1. the spout input will not work ,after reciever the first frame then report "Cannot create DirectX/OpenGL interop". Test in two different computers,the same bug.
2. In compile porgress,an error about "redifinition struct std::hash". Not sure if is cause the the error blow ,I quoted the line208 in qhashfunction.h, the compile progress can finish.But the qhashfunction.h is part of QT,so I thinks it should not be quoted. After that ,the HalfDome seen to be the only CANVAS can be used , can not select other CANVAS in App. Not sure if it is this error cause the bugs.