float4 vecAmbient;
float4 vecDiffuse;
float4 vecSpecular;
float4 vecEmissive;
// transformations
float4x4 matWorld;
float4x4 matWorldViewProj;
float3 vecViewPos;

float4 vecFog;
float4 vecTime;



texture entSkin1;
texture entSkin2;
texture mtlSkin1;

samplerCUBE EnvironmentSampler = sampler_state
{ 
	Texture = <mtlSkin1>;
	MipFilter = LINEAR;
	MinFilter = LINEAR;
	MagFilter = LINEAR;
};

sampler ColorSampler =sampler_state
{
	Texture=<entSkin1>;
	
	MipFilter = LINEAR;
	MinFilter = LINEAR;
	MagFilter = LINEAR;
};

sampler NormalSampler =sampler_state
{
	Texture=<entSkin2>;
	
	MipFilter = LINEAR;
	MinFilter = LINEAR;
	MagFilter = LINEAR;
};






// vertex shader output structure
struct VS_OUTPUT
{
	float4 Pos  : POSITION;
	float2 Tex : TEXCOORD0;      
	float3 Eye : TEXCOORD1;
	float3 Norm: TEXCOORD2;
	float3 m1: TEXCOORD3;
	float3 m2: TEXCOORD4;
	float3 m3: TEXCOORD5;
	float  Fog:  FOG;
};


VS_OUTPUT VS(
float4 inPos  : POSITION,
float3 inNormal : NORMAL,
float2  inTex  : TEXCOORD0,
float3 inTangent : TEXCOORD2) 
{
	VS_OUTPUT Out = (VS_OUTPUT)0;
	float4 Pos = mul(inPos,matWorld);
	float3 Normal = normalize(mul(inNormal, (float3x3)matWorld));
	Out.Pos  = mul(inPos, matWorldViewProj);
	Out.Fog = 1 - (distance(Pos, vecViewPos) - vecFog.x) * vecFog.z;
	Out.Tex = inTex;	
	Out.Eye=Pos - vecViewPos;
	Out.Norm=Normal;
	float3x3 matTangent;
	matTangent[0] = mul(inTangent,matWorld);
	matTangent[1] = mul(cross(inTangent,inNormal),matWorld);	// binormal
	matTangent[2] = mul(inNormal,matWorld);
	Out.m1=matTangent[0];
	Out.m2=matTangent[1];
	Out.m3=matTangent[2];
	return Out;
}

float4 PS ( VS_OUTPUT In) : COLOR
{
	float4 OutColor;
	float4 color = tex2D(ColorSampler, In.Tex);
	float4 normal = tex2D(NormalSampler, In.Tex)*2-1;
	float3x3 toWorld;
	toWorld[0]=In.m1;
	toWorld[1]=In.m2;
	toWorld[2]=In.m3;
	float3 norm=mul(normal.xyz,toWorld);
	float3 vec = reflect(normalize(In.Eye), norm);
	float4 Environment = texCUBE(EnvironmentSampler,vec);	
	float3 vec2 = refract(normalize(In.Eye), norm, 0.95);
	float3 vec3 = refract(normalize(In.Eye), norm, 0.9525);
	float3 vec4 = refract(normalize(In.Eye), norm, 0.955);
	float4 EnvRefract = float4(texCUBE(EnvironmentSampler,vec2).r,texCUBE(EnvironmentSampler,vec3).g,texCUBE(EnvironmentSampler,vec4).b,1);
	float fresnel = 1-(dot(norm,-normalize(In.Eye)));
	fresnel=pow(fresnel,1.5);
	OutColor.rgb=lerp(color.rgb,EnvRefract,color.a)+Environment.rgb*1*fresnel;
	OutColor.a=(1-color.a)+pow(fresnel,0.25);
	return OutColor;
}

float4 PS_back( VS_OUTPUT In) : COLOR
{
	float4 OutColor;
	float4 color = tex2D(ColorSampler, In.Tex);
	float3 norm=In.Norm;
	float3 vec = reflect(normalize(In.Eye), norm);
	float4 Environment = texCUBE(EnvironmentSampler,vec);	
	float fresnel = 1-abs(dot(norm,-normalize(In.Eye)));
	fresnel=0.4+pow(fresnel,1.5);
	OutColor.rgb=vecAmbient.rgb*Environment.rgb*1*fresnel;
	OutColor.a=(1-color.a);
	return OutColor;
}



technique glas
{
	pass P0
	{
		CullMode=cw;
		Zenable=true;
		ZWriteEnable=true;
		VertexShader = compile vs_2_0 VS();
		PixelShader  = compile ps_2_0 PS_back();
	}
	pass P1
	{
		CullMode=ccw;
		Zenable=true;
		ZWriteEnable=true;
		VertexShader = compile vs_2_0 VS();
		PixelShader  = compile ps_2_0 PS();
	}
}

material glas
{
	effect = "glas.fx";
}

action shader1  //wird im WED dem Modell zugewiesen
{
	my.material = glas;
}

bmap bmp_cubemap=<eigenx.bmp>;
material mat_earth
{
	effect="earth_glas.fx";
	skin1=bmp_cubemap;
	flags=TRANSLUCENT;
	ambient_red=200;
	ambient_green=180;
	ambient_blue=150;	
}

action earth
{
	my.material=mat_earth;	
	bmap_to_cubemap(bmp_cubemap);
}