texblendps.txt

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// File: ps_multitex.txt
// Desc: Pixel shader that does multitexturing.
// Globals
sampler AlphaTex;
sampler Texture1;
sampler Texture2;
sampler Texture3;
float3x3 mat3x3;
//Structures
struct PS_INPUT
{
     vector diffuse    : COLOR;
     float2 alpha      : TEXCOORD0;
     float2 tex1       : TEXCOORD1;
     float2 tex2       : TEXCOORD2;
     float2 tex3       : TEXCOORD3;
};
struct PS_OUTPUT
{
     vector diffuse : COLOR0;
};
// Main
PS_OUTPUT Main(PS_INPUT input)
{
     // zero out members of output
     PS_OUTPUT output;// = (PS_OUTPUT)0;

     // sample appropriate textures
     vector alphatex=tex2D(AlphaTex,input.alpha);
     //vector tex1=tex2D(Texture1,input.tex1);
     //vector tex2=tex2D(Texture2,input.tex2);
     //vector tex3=tex2D(Texture3,input.tex3);
     mat3x3[0]=tex2D(Texture1,input.tex1);
     mat3x3[1]=tex2D(Texture2,input.tex2);
     mat3x3[2]=tex2D(Texture3,input.tex3);
     mul(alphatex.rgb,mat3x3);
     // lerp pixel color
     //output.diffuse=(tex1*alphatex.r+tex2*alphatex.g+tex3*alphatex.b)*input.diffuse;//lerp(tex1,tex2,alphatex.a)*input.diffuse;
     output.diffuse.rgb=mul(alphatex.rgb,mat3x3)*input.diffuse.rgb;
     output.diffuse.a=1;
     return output;
}