Does anyone know how to create a flat polygon (2 sided) that has a skin that can be visible from both sides? In Maya it's called a double-sided shader or 2-sided normal.

Any ideas?

Thanks!

first:Change the cullmode
technique Two_Side
{
pass p0
{
......
CullMode = NONE;
......
}
}
second,In the vertexshader,calculate the Normal :
VERTEX_OUTPUT Two_Side_VS(const VERTEX_INPUT Input)
{
.......
float4 WorldPos = mul(float4(Input.position.xyz,1.0),matWorld);
float3 ViewVec.xyz = vecViewPos - WorldPos;
float3 Normal = mul(float4(Input.normal.xyz,1.0),transpose(matWorldInv));
Normal = mul(ViewVec.xyz,Normal.xyz)>0?Normal,-Normal;//if CCW face is visible,flip Normal
.......
}

Oh Wow!

I was actually thinking of being able to do it using the WED or MED, because I have designers who freak out at the sight of code and want a more visual way of doing it.

Any ideas?

Thanks!

just in your code put that in a material, and the material will be accesible thru wed.

you can write Material Effects to .fx files,such as phong.fx,two_side.fx and so on.then,define the materials in your script,
material mat_phong
{
effect = "phong.fx";
}
material mat_2side
{
effect = "two_side.fx";
}
after doing this,you can attach materials to the entites in WED.

You can also attach the .fx to modle's subsets in MED:Edit->Manage skins->skin setting->Effect Setup->load FX.
It's useful for modles those contain multiple subset,It can attach different fx to different subset of a modle.but you can't use A6 material Event and extra texture and so on...
pardon me for my poor English

Isn't the idea behind 3D Gamestudio to make things easier? For me such an FX file sounds like standard stuff that is used all the time. So shouldn'`t be such stuff in the templates somewhere?

Being a completely newbie, and just have read the first chapters of the Lite C tutorials yet, I am still stuck with this problem. I have written a *.fx file that includes the code from above to set the cullmode off.

action Noculling
{
while(1)
{
CullMode = NONE;
wait(1);
}
}

Then I have included it into my main script. The action appears. And i can access it. But when trying to run it, it just gives me errors. Unknown Keyword CullMode. Could somebody be so kind to help me out? What have i misunderstood here?

In WDL file:
Code:

---

material mat_twoside
{
    effect = "twoside.fx";
}

---

In "twoside.fx" file:
Code:

---

technique twoside
{
    pass p1
    {
        cullMode = none;
    }
}

---

It's 1am, so hopefully I didn't have any typos...