I'm a complete shader newbie here, so bear with me..

I noticed the effects.wdl in 3DGS's work folder now has a nice env bump mapping (I'm assuming thats what its called) shader, but it doesn't show the original objects texture at all. Showing it some would be nice, but I'd really like to have it use an alpha mask.

I took the cubic env mapping shader from the wiki, which uses an alpha mask, and started fiddling around trying to mix the code in order to get the env bump mapping to be alpha masked. I have NO idea what I'm doing, and I got close, but it just wont work.

I was hoping someone with a little more (aka: any ) shader experience could whip something together for me, or at least point me in the right direction.

Okay lets try this.

This is the original code. What needs to be done in order to make it use the entSkin1's alpha channel to control how strong the effect is where?

Code:

---

material mtl_envcube // environment cube
{
  skin4 = bmp_envcube;
  event = mtl_env_init;
  effect = "
    texture mtlSkin4;
    texture entSkin2;
    matrix matMtl;

    technique envcube
    {
      pass p0
      {
		BumpEnvMat00[0] = 0.5f;
		BumpEnvMat01[0] = 0.0f;
		BumpEnvMat10[0] = 0.0f;
		BumpEnvMat11[0] = 0.5f;

        Texture[0] = <entSkin2>;
        ColorArg1[0] = Texture;
        ColorArg2[0] = Diffuse;
		ColorOp[0] = BumpEnvMap;

//		TextureFactor = 0xFFFF0000;
//		ColorArg1[0] = Tfactor;
//		ColorOp[0] = SelectArg1;

        AddressU[1] = Clamp;  // don't wrap around edges
        AddressV[1] = Clamp;

        TexCoordIndex[1] = CameraSpaceReflectionVector;
        TextureTransformFlags[1] = Count3;
        TextureTransform[1] = <matMtl>; // transform camera space back to world space

        Texture[1] = <mtlSkin4>;
        ColorArg1[1] = Texture;
        ColorArg2[1] = Current;
		ColorOp[1] = Add;

      }
    }

    technique fallback { pass p0 { } } // empty fallback causes normal rendering without effect
  ";
}

---