I've copied mtlFX.c to my work directory then
include this file in my main.c like this :

#include <acknex.h>
#include <default.c>
#include "mtlFX.c"

none actions assigned to any entity and when run,
I got this message :

Malfunction W1550
-----------------
Error in effect:
(23): error X3003: redifinition of 'matWorldView'

>float 4x4 matWorldView;<

What I'm doing wrong?

Does it happen when you run the Shader test?

It runs fine with the ShaderTest.c.
Any ideas?

Try adding a wdl with the same name of the project in the same directory (is it called main.c? then it would be main.wdl) and put in these lines in the file:

PATH "%EXE_DIR%\\template_6\\code";
PATH "%EXE_DIR%\\template_6\\images";

Hmm I tried what would happen, but that doesn't help much.

Sorry, forget to mention that I've already added
these 2 lines in main.wdl also

PATH "%EXE_DIR%\\template_6\\code";
PATH "%EXE_DIR%\\template_6\\images";

but the error still exists.

EDIT
----
I'm even write it explicitly :

path "c:\\Program Files\\GStudio7\\template_6\\code";
path "c:\\Program Files\\GStudio7\\template_6\\images";

still no success.

LOL I now get the same error in my project Are you trying to multitexture terrain?

Yes, this is a bug in default.fx. It happens when you use <fog> and <view> at the same time in a shader.

Solution: Edit default.fx and replace

float4x4 matWorldView;

by:

#ifndef MATWORLDVIEW
float4x4 matWorldView;
#define MATWORLDVIEW
#endif

This ensures that matWorldView is only defined once.

You mean defined twice like this?

default.fx
Code:

---

//////////////////////////////////////////////////////////////////////
//section: fog ///////////////////////////////////////////////////////

float4 vecFog;
float4 vecViewPos;
//float4x4 matWorldView;
#ifndef MATWORLDVIEW
float4x4 matWorldView;
#define MATWORLDVIEW
#endif
#ifndef MATWORLD
float4x4 matWorld;
#define MATWORLD
#endif

#ifdef DXFOG
float DoFog(float4 Pos)
{
	float3 P = mul(Pos,matWorldView); // convert vector to view space to get it's depth (.z)
   	return saturate((vecFog.y-P.z) * vecFog.z); // apply the linear fog formula
}
#else // distance based fog
float DoFog(float4 Pos)
{
	float3 P = mul(Pos,matWorld);
	return 1 - (distance(P,vecViewPos)-vecFog.x) * vecFog.z;
}
#endif

...

//////////////////////////////////////////////////////////////////////
//section: view - transform vertex position to view space ////////////

//float4x4 matWorldView;
#ifndef MATWORLDVIEW
float4x4 matWorldView;
#define MATWORLDVIEW
#endif
float4 DoView(float4 Pos)
{
	return (mul(Pos,matWorldView));
}
float3 DoView(float3 Pos)
{
	return (mul(Pos,matWorldView));
}

---

Thank you jcl, it works now.
Dusty, thank you for your time also.

Also bei mir funktionierts noch immer nicht.

Ich habe die zwei Zeilen geänder, aber diesmal sagt er mir, das in Zeile 23 ein Fehler ist...

Code:

---

22: //section: sun - return the sun light on the surface /////////////////
23:
24:  float4 vecSunDir; 

---

Woran kann das liegen?