material mtl_himmel
{
	effect = "himmel.fx";
}

mtl_himmel.skill1 = float(50); //vertical offset
mtl_himmel.skill2 = float(1500); //fading scale
mtl_himmel.skill3 = float(0.25); //density

float4x4 matWorldViewProj;

float4 vecFog;
float4 vecSkill1;

struct VS_IN
{
	float4 position : POSITION;
	float2 texCoord : TEXCOORD0;
};

struct VS_OUT
{
	float4 position : POSITION;
	float2 texCoord : TEXCOORD0;
	float Fog : FOG;
};

VS_OUT mainVS (VS_IN In)
{
	VS_OUT Out;
	Out.position = mul(In.position,matWorldViewProj);
	Out.Fog = ((In.position.y-vecSkill1.x)/vecSkill1.y)-vecSkill1.z;
	Out.texCoord = In.texCoord;
	return Out;
}


texture entSkin1;

sampler basemap = sampler_state
{
	Texture = <entSkin1>;
	MipFilter = LINEAR;
	MinFilter = LINEAR;
	MagFilter = LINEAR;
	AddressU = Wrap;
	Addressv = Wrap;
};

float4 mainPS (VS_OUT In) : COLOR0
{
	return tex2D(basemap,In.texCoord);
}

technique heightFog
{
	pass p0
	{
		VertexShader = compile vs_1_1 mainVS();
		PixelShader = compile ps_1_1 mainPS();
	}
}

Quote:

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frazzle, you are right, but in that case you'd need a shader for every object in your world.

---

Why would you need a shader for every object ??
Replacing x through y would only change the look like you already indicated but not the effect you wanted to created.
Btw, which shader would you apply to every object in world space ??

Cheers

Frazzle