How to use Normal materials in TGE 1.5.

#1 You don't, you will need TGEA for using normal maps, unless you are referring to something else.

#2 The modernization kit for 1.5 uses normal maps.

#3 But only on difs

#4 And water

#5 Ok for DIFs but how ?

#6 You will have to implement the Modernization Kit, which requires changes to the C++ source code. It is not available in the demo that you have.

#7 Does it use normal maps or bump maps? If normal maps, how does it do this? I was poking at fixed-function normal mapping yesterday, actually, and was using this method:

TU0: Diffuse Map
TU1: Normal Map
TU2: No texture

Diffuse combiners are all the standard.

Normal Map:
Color arg 1 = texture sample (from normal map)
Color arg 2 = Texture factor (could use a per-stage constant), set to light direction
Outputs to temp register

TU2:
Modulate temp register (N dot L) with current (output from TU0), output as usual.

I didn't finish the implementation because I ran into two problems:
1. The second argument is a color value, and can't be negative
2. No object->texture space transform matrix

I was thinking that some of this could be overcome since the application for it has a fixed light vector, but I decided it wasn't worth it. Did I miss something?

#8 I do not have a demo. I have access to the commercial license TGE 1.5.1 engine my company has. I am just contributing to it by creating a mission of my own. I have no access to code changes, only modeling, texturing and scripting.

#9 That's right. I forgot.

Then you will have to get one of your programmers to implement it in your build of the engine.

#10 Ah doh, this is a shader effect. Nevermind previous post.