float4x4 matWorld;
float4x4 matWorldViewProj;
float4 vecViewPos;
float4 vecTime;
float4 vecLightColor[8];
float4 vecLightPos[8];
float3x3 matTangent;

texture entSkin1;
texture b_reflection_bmap;
texture b_refraction_bmap;

sampler2D smpNormal = sampler_state
{
	Texture = <entSkin1>;
	
	MinFilter	= linear;
	MagFilter	= linear;
	MipFilter	= linear;
	
	AddressU		= Wrap;
	AddressV		= Wrap;
};

sampler2D smpRefl = sampler_state
{
	Texture = <b_reflection_bmap>;
	
	MinFilter	= linear;
	MagFilter	= linear;
	MipFilter	= linear;
	
	AddressU		= Mirror;
	AddressV		= Mirror;
};

sampler2D smpRefr = sampler_state
{
	Texture = <b_refraction_bmap>;
	
	MinFilter	= linear;
	MagFilter	= linear;
	MipFilter	= linear;
	
	AddressU		= Clamp;
	AddressV		= Clamp;
};

struct VS_OUT
{
	float4 Pos : POSITION;
	float2 Tex : TEXCOORD0;
	float3 ProjTex : TEXCOORD1;
	float3 ViewDir : TEXCOORD2;
	
	float3 WorldPos : TEXCOORD3;
	float3 tangent0 : TEXCOORD4;
	float3 tangent1 : TEXCOORD5;
	float3 tangent2 : TEXCOORD6;
};

VS_OUT Shader_VS(float4 inPos : POSITION, float2 inTex : TEXCOORD0, float3 inTangent : TEXCOORD2, float3 inNormal : NORMAL)
{
	VS_OUT Out = (VS_OUT)0;
	
	Out.Tex = float2(vecTime.w*125, 0)*0.01+inTex*1000;
	float4 Pos = inPos;
	
	Out.Pos = mul(Pos, matWorldViewProj);
	Out.ProjTex = Out.Pos.xyw;
	Out.ViewDir = vecViewPos.xyz-mul(inPos,matWorld).xyz;
	
	inNormal = -inNormal;
	
	Out.tangent0 = mul(inTangent, matWorld);
	Out.tangent1 = mul(cross(inTangent, inNormal), matWorld);
	Out.tangent2 = mul(inNormal, matWorld);
	
	Out.WorldPos = mul(inPos, matWorld);
	
	return Out;
}

float fastFresnel(float3 I, float3 N, float R0, float power)
{
	return R0+(1.0-R0)*pow(1.0-dot(I,N),power);
}

float4 Shader_PS(float2 inTex : TEXCOORD0, float3 ProjTex : TEXCOORD1, float3 ViewDir : TEXCOORD2, float3 inPos : TEXCOORD3, float3 tangent0 : TEXCOORD4, float3 tangent1 : TEXCOORD5, float3 tangent2 : TEXCOORD6) : COLOR
{
	ProjTex.xy = ProjTex.xy/ProjTex.z;
	ProjTex.xy = ProjTex.xy*0.5+0.5;
	
	float4 Bump = tex2D(smpNormal, inTex/500)*2.0-1.0;
	
	matTangent[0] = tangent0;
	matTangent[1] = tangent1;
	matTangent[2] = tangent2;
	float4 SpecNormal = Bump;
	float3 Normal = SpecNormal.rgb*5.0-2.50;
	Normal = mul(Normal, matTangent);
	Normal = normalize(Normal);

	
	float4 Reflect = tex2D(smpRefl, ProjTex.xy+Bump.rg*0.2);
	float4 Refract = tex2D(smpRefr, ProjTex.xy+Bump.rg*0.2);
	Refract = lerp(Refract,float4(0,0.1,0.2,0.5),0.3);
	
	float i;
	for(i=0;i<=7;i++)
	{
		float3 lightdir = normalize(inPos-vecLightPos[i].xyz);
		float3 viewdir2 = normalize(inPos-vecViewPos);
		float3 halfvec = normalize(viewdir2+lightdir);
		float specularity = saturate(dot(halfvec, Normal));
	}
	
	float fresnel = fastFresnel(normalize(ViewDir), Bump.rbg, 0.0204,5);
	float4 Color = lerp(Refract,Reflect,fresnel);
	Color.a = 1.0;
	return Color;
}

technique tech_00
{
	pass pass_00
	{
		CullMode = None;
		
		VertexShader = compile vs_2_0 Shader_VS();
		PixelShader = compile ps_3_0 Shader_PS();
	}
}