Im trying to get Matt's normalmapping shader to work.


I just changed normaldemo.c from the shader workshop by using a "test.fx" file (code from wiki) for the effect property. That, however, doesnt work. Any ideas?

Code:

---

////////////////////////////////////////////////////////
// Copyright 2006	by Taco Cohen. All rights reserved							
// 2007 adapted to A7 / lite-C by jcl
////////////////////////////////////////////////////////
#include <acknex.h>
#include <default.c>

MATERIAL* mtlNormal =
{
	ambient_red = 40;			// The ambient color - a dark grey.
	ambient_green = 40;
	ambient_blue = 40;
	effect = "test.fx";	// The effect file containing the vertex shader, pixel shader and technique.
//	flags = AUTORELOAD;		// allows to edit the shader at runtime
}

function main()
{
// Load an empty level, and create a model :
	level_load("");
	wait(2);
	ENTITY* ent = ent_create("blob.mdl",vector(50,0,0),NULL);
	ent.material = mtlNormal;
	while(1)
	{
		sun_angle.pan += 1.25 * time_step;
		ent.pan -= 2.25 * time_step;
		ent.tilt -= 1.1 * time_step;
		wait(1);
	}
}

---

Matt's shader uses dynamic lights, my shader uses the sun. So you'll have to place some dynamic lights (by code).

Maybe you'll also have to set the materials' TANGENT flag.

I suspected something like that. I cant find how to create lights by code in the manual though. Tried adding lights in the editor and checking the box "dynamic", but that didnt seem to work. The flag TANGENT is applied. How do I create dynamic lights by code?

I think it's just a matter of ent_creating an entity and setting its lightrange > 0 (big enough so that it is within range of the object you want lit).

This really isnt going well at all. Currently I have this:

Code:

---

////////////////////////////////////////////////////////
// Copyright 2006	by Taco Cohen. All rights reserved							
// 2007 adapted to A7 / lite-C by jcl
////////////////////////////////////////////////////////

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

MATERIAL* mtlNormal =
{
	ambient_red = 0;			// The ambient color - a dark grey.
	ambient_green = 0;
	ambient_blue = 0;
	effect = "test.fx";	// The effect file containing the vertex shader, pixel shader and technique.
//	flags = TANGENT;
//	flags = AUTORELOAD;		// allows to edit the shader at runtime
}

function main()
{
// Load an empty level, and create a model :
	fps_max = 90;
	vec_set(sun_color, vector(0,255,0));
	
	level_load("test.wmb");
	wait(2);
	ENTITY* ent = ent_create("blob.mdl",vector(0,0,0),NULL);
	ENTITY* light = ent_create(NULL, vector(10,0,0), NULL);
	light.lightrange = 100;
	ent.material = mtlNormal;
	while(1)
	{
//		sun_angle.pan += 1.25 * time_step; 
		ent.pan -= 2.25 * time_step;
		ent.tilt -= 1.1 * time_step;
		wait(1);
	}
}

---

My map "test.wmb" has got a room. If I do not add a light (thorugh the editor), then the sunlight is visible and everything is more or less magically illuminated. If I however add a light, then the sunlight is gone for some reason. Adding a dynamic light by code doesnt seem to do anything. When not having a light (from editor) in the scene, everything is illuminated by sunlight or something, so I cant see if the code-created light is really there. When adding a light (from editor) somewhere, then everything is dark (except where i added the editor-light), so I guess the code-light really doesnt work.

I also noticed that the ambient lightning of objects wearing test.fx seem to not care about the ambient lightning set in lite-c. Even though all at 0, the model is bright.

So... These are my questions now :

Why does sunlight disappear when adding in a light?
How can I have both sunlight and "local" lights?
Why doesn't your shader care about sun_color? How can I make it aware of it? (Something I noticed...)
How do I make Matt's shader aware of the ambient lightning set in lite-c?

And I still need help with getting Matt's shader to work obviously...

Look for my normal mapping shader. It does sun & Dyn lights, plus includes a dynamic light action. Of course, all are optional. D3D converted it to Lite-C not too long ago. Check the Lite-C Contributions...

I downloaded the file youre linking to in your signature, and ran your wdl-script with the nm.fx. No changes made. And everything is just black. Same result on two computers. Also tried using your shader in the above program. But it doesnt work. Well, it does something, since the object isnt being shaded (as it is by default), but it sure isnt normalmapped.

I also tried running the workshop scripts again, but now with the newest version of A7. smoothdemo.c doesnt work - everything is black, except the background which is blue. But both the object and the ground are black. Actually, none of the scripts after normaldemo.c work properly.

I've tried these scripts at a Intel C2D, GF8800GT and a P4 with some Intel gfx. The scripts dont work on any of them.

Try this for Lite-C normalmap

Thanks, now I got it to work. Still wondering about those questions I asked in my previous post.

I also noticed that the sunlight only illuminates objects wearing NM.fx if they have specular colors set. Why is that?