wonderful. thanks for looking at it.

I always separate my models in several 'chunks' for different effects. With 6.405 tried to avoid that...
Thank You anyway, JCL.

i am still troubled with the thing, i have the 6.50.2 version now.

Code:

---

bmap cubem = <cube1small+6.tga>;
bmap metDOT = <metal49DOT3.tga>;

function mtl_envmap_view()
{
        mat_set(mtl.matrix,matViewInv);
        mtl.matrix41=0;
        mtl.matrix42=0;
        mtl.matrix43=0;
}

function mtl_envmap_init()
{
        bmap_to_cubemap(mtl.skin4);
        mtl.event=mtl_envmap_view;
        mtl.enable_view=on;
}

material spec_mat{
	effect="SpecSun.fx";
	flags=tangent;
}

material nullmat{
	power=2;
	skin1=metDOT;
	skin4=cubem;
}

material reflect_mat{
	event=mtl_envmap_init;
	effect="cubemap.fx";
}

entity* grundEH;

function shader_startup();

ACTION grundeinheit{
while(!me){wait(1);}
grundEH=my;
shader_startup();
while(1){
my.pan+=0.5*time_step;
wait(1);
}
}

function shader_startup() {
while(!grundEH){wait(1);}
spec_mat.skill1=float(sun_pos.x);
spec_mat.skill2=float(sun_pos.z);
spec_mat.skill3=float(sun_pos.y);
grundEH.material=nullmat;
ent_mtlset (grundEH, spec_mat, 3);
ent_mtlset (grundEH, reflect_mat, 1);
wait(5);
}

---

.. does not show any shaders. though, the model parts are not invisible anymore, but get, as soon as i apply the fx file in MED directly. both shaders work if i apply em to the model alone.

From the manual, ent_mtlset:

"Replaces skin lighting and skin effect of a model (...) Material parameters that do not belong to a skin - for instance material skills or matrices - are not modified."

You need to assign a material to the entity that is able to run your skin effects. Your entity material "nullmat" has no events or matrices, so your code above can't work.