Phong shader problem

Hi, I’m having trouble with the phongdirectional node.

There doesn’t seem to be any difference between phong shading and the backup gouraud shading, or the gourauddirectional node. The technique valid output pin says gives a value of 1 for both techniques.

Anyone have any idea how to troubleshoot this?

I’m using a unibody Macbook Pro with 9600GT M graphics chip, running Windows 7 64bit. Apart from this issue v4 seems to be running well.


hello, try it on a sphere with low polygon resolution, you will see the difference better there.

Ah yes, thanks