I was sitting down to do some scaling and shifting.

Gstudio 6.31.4 Pro. When I ran into a situation where I could only scale the texture "hardcoded" into the effect file.

Here are (2) level blocks. Left one is using material floor_two. Right one is using material floor_one. They are identical texture images. They are only different in the way I attempt scaling.

Could you advise?? It follows.

Thanks,
Eric




Code:

---

 var d3d_automaterial=1;


function mtl_scale() 
{ 

mtl.matrix11 = float(10);
mtl.matrix12 = float(0);
mtl.matrix13 = float(0);
mtl.matrix14 = float(0);

mtl.matrix21 = float(0);
mtl.matrix22 = float(10);
mtl.matrix23 = float(0);
mtl.matrix24 = float(0);

mtl.matrix31 = float(0);
mtl.matrix32 = float(0);
mtl.matrix33 = float(0);
mtl.matrix34 = float(0);

mtl.matrix41 = float(0);
mtl.matrix42 = float(0);
mtl.matrix43 = float(0);
mtl.matrix44 = float(0);

} 

material floor_one 
{ 

effect = " 

texture entSkin1;

technique one 
{ 

pass p0 
{ 

Texture[0] = (entSkin1);
TextureTransformFlags[0] = Count2; 

TextureTransform[0]= 
		{ 
		10.0, 0.0, 0.0, 0.0,  
		0.0, 10.0, 0.0, 0.0,  
		0.0, 0.0, 0.0, 0.0, 
		0.0, 0.0, 0.0, 0.0 
		}; 


Colorop[0] = Modulate;
ColorArg1[0]=Texture;
ColorArg2[0] = Diffuse;
ColorOp[1] = Disable;

} 
} 

"; 
} 

//////////////////////////////////////////////////
// Material Floor_Two
//

material floor_two 
{ 
event = mtl_scale; 

effect = " 

matrix matMtl; 
texture entSkin1;

technique one 
{ 

pass p0 
{ 

Texture[0] = (entSkin1);
TextureTransformFlags[0] = Count2; 

TextureTransform[0] = (matMtl); 

Colorop[0] = Modulate;
ColorArg1[0]=Texture;
ColorArg2[0] = Diffuse;
ColorOp[1] = Disable;

} 
} 

"; 
} 
 

---

As to my knowledge, external variables are referred to in angular brackets:

TextureTransform[0] = <matMtl>;

I'm not sure if that is the reason for the problem, but apart from that I see nothing obviously wrong in your code. The model looks as if the scale factors are zero. Maybe mtl_scale is never called?

In the effects.wdl you'll find an example how to use the material matrix for shifting and scaling textures. Compare your code with that example.

function mtl_eye_init()
{
// copy standard model material properties
mtl_copy(mat_model);
mtl.matrix11 = float(1); // default u scale
mtl.matrix22 = float(1); // default v scale
}

material auge_mdl
{
event = mtl_eye_init;
effect = "
matrix matMtl;

technique scale
{
// use material transformation matrix, leave everything else at default values
pass p0
{
TextureTransformFlags[0] = Count2;
TextureTransform[0] = <matMtl>;
}
}

technique fallback { pass p0 { } }
";
}




Let me know if you find out the reason for the problem.

I've checked things over.... Found that the "event function" is not being called from the "material effect". I have tried everything.

As a last resort; I added a model and assigned it the _same_ FX file that the level geometry uses, and the _same_ "event function" the level geometry is supposed to use.

The model texture transforms behave correctly, where the level block still does not.

Can I send you the small project with the code?? What address??

Thanks,
Eric

From the manual:

material.event
This function is called once for every entity this material is assigned to as long as ENABLE_VIEW or ENABLE_RENDER aren't set.

If zero entities are assigned to the material, the event is executed zero times. What you probably want to use is a starter function, not an event function.

You were correct, the material is working fine by using a starter func.

Thanks for your patience, and the answer.

Eric

@steempipe: thank you very much for make the problem clear.

I have figured out to get a pointer/access to the material via starter function and will finish the tutorial, and make a new for just scaling and shifting level textures static and dynamicaly.

I find the adress for shifting and scaling, have someone a info about the other matrix-adresses. I can´t find it in the manual.

No prob, man. Glad that you are taking a keen interest in these things Rigoletto.

Okay.... if it helps anyone else, here is some code to spark ideas.

What is it??:
An example to allow a bit of user interaction with a material effect applied to level geometry.
This example is very simple; It shows a bit of scaling and shifting of the block texture.

Code:

---

 

//////////////////////////////////////////////////
// Example of adjusting the material.matrix
// while using an FX file on _Level Geometry_.
// Enlists the help of a Starter Function to
// call additional functions.
//
// Here we adjust the scale with key 2, or key 4
// And also make it scroll in a direction.
//
// Eric Hendrickson-Lambert (Steempipe)
//
// 4/26/04: 	-Put into operation
//
// Todo:  	-Add more examples, etc.
//        	-Tighten up code
//

var d3d_automaterial=1;


//bind <ffp_scale.fx>;


// Material assignment for the level geometry
// The name of the texture in WED.
material floor_one 
{

// Because my effect file is not too long,
// I will just use the effect string inside the material.
// NOTE:  If you use <effect_load>, then take
// the effect string out of here.

effect = "

matrix matMtl; 
texture entSkin1;

technique one 
{ 

  pass p0 
    { 

    Texture[0] = <entSkin1>;

    TextureTransformFlags[0] = Count2; 
    TexCoordIndex[0]=0;  //1

    TextureTransform[0] = <matMtl>; 


    Colorop[0] = Modulate;
    ColorArg1[0]=Texture;
    ColorArg2[0] = Diffuse;

    } 
  } 
";

}


function load_shader()
{
//effect_load(floor_one,"ffp_scale.fx");
wait(1);
}


function scale_x2() {

floor_one.matrix11 = float(2);
floor_one.matrix22 = float(2);

};
			
function scale_x4() {

floor_one.matrix11 = float(4);
floor_one.matrix22 = float(4);

};


function scroll_tex() {

floor_one.skill1 -= time;
floor_one.matrix31 = floatd(floor_one.skill1,500); 
floor_one.matrix32 = floatd(floor_one.skill1,500);

}


starter floor_init {

// Set a default texture scale
//
floor_one.matrix11 = float(1);
floor_one.matrix22 = float(1);

//floor_one.skill1 = 50;

// Pressing key 2 will scale texture x2
// Pressing key 4 will scale texture x4
while(1)
    {
	if (key_2) { scale_x2(); };

	if (key_4) {scale_x4(); };

	scroll_tex();

	wait(1);
    }

}


 

---

I dont get it =\
I have created a map entity with a texture assigned...
I copied the code, wrote a main with a load_level...
And then? Should it work when I press 2 or 4?
nothing happens when I press them.

Jostie

Is the name that you gave your texture in the WAD:
"floor_one"?? Without the quotes.

Now THAT explains a lot...
HURRAY!!! It works
Big thanx!

Jostie

p.s. Keep it going with your tutorials, they are great for noobs like me