How SetTexture and [matrix] works in surface shaders

Questions & Answers
1

How I can translate this line to surface shaders?

SetTexture[_ReflectionTex] { matrix [_ProjMatrix] combine texture * previous }

I know I can pass the _ProjMatrix from a script using mat.SetMatrix( “_ProjMatrix”, mtx);

But I am not sure if the right code in my shader should be this:
v.texcoord = mul(_ProjMatrix , v.texcoord );

What exactly do internaly SetTexture with the matrix?

Thanks

2

you need declare the _ProjMatrix in your shader as a uniform type.