Could not show multiple textures

Hi Gordon:

Can you help answer this quesiton?

 

"Another related question is that if we define the location close to the view point with small value and the location far away with large value, how about the normal definition?
 

In the above code(your code), the normal is defined as  0.0f,0.0f,1.0f, which is not towards the view point. But why we still can see the light reflect from this plane? Can you help me explain this? I have a feeling I do not have a correct understanding of the coordinate system in the OpenGL ES.

"


Thank u very much,

 

Renaissance