Terrain MultiTex 2

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///////////////////////////////////
//  ffp5tex.fx
//
/***********************************************************
	FFP MultiTex Effect to blend 5 Textures.

	5/8/05

	Eric Hendrickson-Lambert (Steempipe)


	Requires:  GStudio 6.31 Comm+
							DX 9.0c

	Blendmaps for skins 2,3,4,5 are in their alpha channels

************************************************************/

////////////////////////////////////////////////////
// Assign the tile size of the Textures.
//

float Skin_Size1 = 20;
float Skin_Size2 = 20;
float Skin_Size3 = 20;
float Skin_Size4 = 20;
float Skin_Size5 = 20;


float4 vecLight;


/////////////////////////////////////////////////////////////////////////////////////
// Let's allow for adjusting the intensity of the ambient light color on the passes.
//
float ambientLightFactor = 1.0;


////////////////////////////////////////////////////////////////////
// Here we just create and plug some values into a matrix for
// use in multiplying during the stages.
//

float4x4 matTerrainTexSize =
{
	1.0, 0.0, 0.0 ,0.0,   
	0.0, 1.0, 0.0, 0.0,   
	0.0, 0.0, 0.0, 0.0,
	0.0, 0.0, 0.0, 0.0
};


float4x4 matAlphaMapSize =
{
	1.0, 0.0, 0.0 ,0.0,
	0.0, 1.0, 0.0, 0.0,
	0.0, 0.0, 0.0, 0.0,
	0.0, 0.0, 0.0, 0.0
};


Texture entSkin1;	//1st tile tex RGB
Texture mtlSkin1;	//2nd tile tex RGB and blender in A
Texture mtlSkin2;	//3nd tile tex RGB and blender in A
Texture mtlSkin3;	//4nd tile tex RGB and blender in A
Texture mtlSkin4;	//5nd tile tex RGB and blender in A


sampler s_ShaleTex = sampler_state
{
    Texture = (entSkin1);
    MipFilter = Linear;
    MinFilter = Linear;
    MagFilter = Linear;
    AddressU  = Wrap;
    AddressV  = Wrap;
    AddressW  = Wrap;
    MaxMipLevel=0;
    MipMapLodBias=0.0;
};


sampler s_SandTex = sampler_state
{
    Texture = (mtlSkin1);
    MipFilter = Linear;
    MinFilter = Linear;
    MagFilter = Linear;
    AddressU  = Wrap;
    AddressV  = Wrap;
    AddressW  = Wrap;
    MaxMipLevel=0;
    MipMapLodBias=0.0;
};


sampler s_GrassTex = sampler_state
{
    Texture = (mtlSkin2);
    MipFilter = Linear;
    MinFilter = Linear;
    MagFilter = Linear;
    AddressU  = Wrap;
    AddressV  = Wrap;
    AddressW  = Wrap;
    MaxMipLevel=0;
    MipMapLodBias=0.0;
};


sampler s_RoadTex = sampler_state
{
    Texture = (mtlSkin3);
    MipFilter = Linear;
    MinFilter = Linear;
    MagFilter = Linear;
    AddressU  = Wrap;
    AddressV  = Wrap;
    AddressW  = Wrap;
    MaxMipLevel=0;
    MipMapLodBias=0.0;
};

sampler s_StoneTex = sampler_state
{
    Texture = (mtlSkin4);
    MipFilter = Linear;
    MinFilter = Linear;
    MagFilter = Linear;
    AddressU  = Wrap;
    AddressV  = Wrap;
    AddressW  = Wrap;
    MaxMipLevel=0;
    MipMapLodBias=0.0;
};



technique technique_one
{
	pass p0
	{
		Sampler[0]	= (s_ShaleTex);

		AlphaBlendEnable = False;
		AlphaTestEnable = False;
		DitherEnable = True;
		zWriteEnable = True;
		zEnable = True;
		CullMode = None;
		Lighting=True;		

		Ambient = mul(vecLight, ambientLightFactor);

		TextureTransformFlags[0] = Count2;
		TexCoordIndex[0] = 1;
		TextureTransform[0]= mul(matTerrainTexSize,Skin_Size1);

		ColorOp[0] = Modulate;	
		ColorArg1[0] = Texture;
		ColorArg2[0] = Diffuse;
		AlphaOp[0] = Disable;
	}

	pass p1 
	{
		Sampler[0] 	= (s_SandTex);   	// Blendmap is Alpha
		Sampler[1] 	= (s_SandTex);     	// The Colormap 

		Lighting = True;
		Clipping=True;
		DitherEnable=True;

		AlphaBlendEnable = True;
		AlphaTestEnable = False;
		SrcBlend = InvSrcAlpha;
		DestBlend = SrcAlpha;

		DitherEnable = True;
		zWriteEnable = True;
		zEnable = True;
		CullMode = None;
		Lighting=True;		

		Ambient = mul(vecLight, ambientLightFactor);

		TextureTransformFlags[0] = Count2;		
		TextureTransform[0]= (matAlphaMapSize);
		texcoordindex[0]=0;
		ColorArg1[0] = Texture; 
		ColorOp[0] = SelectArg1;
		AlphaArg1[0] = Texture;
		AlphaOp[0] = SelectArg1;

		TextureTransformFlags[1] = Count2;		
		TextureTransform[1]= mul(matTerrainTexSize, Skin_Size2);
		texcoordindex[1]=1;

		ColorArg1[1] = Texture; 
		ColorArg2[1]= Diffuse;
		ColorOp[1] =Modulate;
		alphaarg1[1] = current;
		alphaop[1]=Disable;
	}

	pass p2
	{
		Sampler[0] 	= (s_GrassTex);   	// Blendmap is Alpha
		Sampler[1] 	= (s_GrassTex);     	// The Colormap 

		Lighting = True;
		Clipping=True;
		DitherEnable=True;

		AlphaBlendEnable = True;
		AlphaTestEnable = False;
		SrcBlend = InvSrcAlpha;
		DestBlend = SrcAlpha;

		DitherEnable = True;
		zWriteEnable = True;
		zEnable = True;
		CullMode = None;
		Lighting=True;

		Ambient = mul(vecLight, ambientLightFactor);

		TextureTransformFlags[0] = Count2;		
		TextureTransform[0]= (matAlphaMapSize);
		texcoordindex[0]=0;
		ColorArg1[0] = Texture; 
		ColorOp[0] = SelectArg1;
		AlphaArg1[0] = Texture;
		AlphaOp[0] = SelectArg1;

		TextureTransformFlags[1] = Count2;		
		TextureTransform[1]= mul(matTerrainTexSize, Skin_Size3);
		texcoordindex[1]=1;

		ColorArg1[1] = Texture; 
		ColorArg2[1]= Diffuse;
		ColorOp[1] =Modulate;
		alphaarg1[1] = current;
		alphaop[1]=Disable;
	}

	pass p3
	{
		Sampler[0] 	= (s_RoadTex);   	// Blendmap is Alpha
		Sampler[1] 	= (s_RoadTex);     	// The Colormap 

		Lighting = True;
		Clipping=True;
		DitherEnable=True;

		AlphaBlendEnable = True;
		AlphaTestEnable = False;
		SrcBlend = InvsrcAlpha;
		DestBlend = SrcAlpha;

		DitherEnable = True;
		zWriteEnable = True;
		zEnable = True;
		CullMode = None;
		Lighting=True;		

		Ambient = mul(vecLight, ambientLightFactor);

		TextureTransformFlags[0] = Count2;		
		TextureTransform[0]= (matAlphaMapSize);
		texcoordindex[0]=0;
		ColorArg1[0] = Texture; 
		ColorOp[0] = SelectArg1;
		AlphaArg1[0] = Texture;
		AlphaOp[0] = SelectArg1;

		TextureTransformFlags[1] = Count2;		
		TextureTransform[1]= mul(matTerrainTexSize, Skin_Size4);
		texcoordindex[1]=1;

		ColorArg1[1] = Texture; 
		ColorArg2[1]= Diffuse;
		ColorOp[1] =Modulate;
		alphaarg1[1] = current;
		alphaop[1]=Disable;
	}

	pass p4
	{
		Sampler[0] 	= (s_StoneTex);   	// Blendmap is Alpha
		Sampler[1] 	= (s_StoneTex);     	// The Colormap 

		Lighting = True;
		Clipping=True;
		DitherEnable=True;

		AlphaBlendEnable = True;
		AlphaTestEnable = False;
		SrcBlend = InvsrcAlpha;
		DestBlend = SrcAlpha;

		DitherEnable = True;
		zWriteEnable = True;
		zEnable = True;
		CullMode = None;
		Lighting=True;		

		Ambient = mul(vecLight, ambientLightFactor);

		TextureTransformFlags[0] = Count2;		
		TextureTransform[0]= (matAlphaMapSize);
		texcoordindex[0]=0;
		ColorArg1[0] = Texture; 
		ColorOp[0] = SelectArg1;
		AlphaArg1[0] = Texture;
		AlphaOp[0] = SelectArg1;

		TextureTransformFlags[1] = Count2;		
		TextureTransform[1]= mul(matTerrainTexSize, Skin_Size5);
		texcoordindex[1]=1;

		ColorArg1[1] = Texture; 
		ColorArg2[1]= Diffuse;
		ColorOp[1] =Modulate;
		alphaarg1[1] = current;
		alphaop[1]=Disable;
	}
}