47 lines
1.2 KiB
Text
47 lines
1.2 KiB
Text
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/**
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* Geforce 4 deluxmaps, pass one
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* compile with "-profile fp20"
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*/
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struct inputVertex {
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float4 norVec : COLOR0;
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float4 tanVec : TEXCOORD0;
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float4 binVec : TEXCOORD1;
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float4 deLuxCoord : TEXCOORD2;
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float4 texCoord : TEXCOORD3;
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};
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float4 main(inputVertex I, uniform samplerCUBE tangentCube, uniform samplerCUBE binormalCube,
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uniform sampler2D deLuxMap, uniform sampler2D normalMap) : COLOR
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{
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//normal
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float3 normal = I.norVec.xyz;
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normal = normal + (normal/2)*(1-dot(normal,normal));//renormalize
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//tangent
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float3 tangent = 2 * (texCUBE(tangentCube, I.tanVec.xyz).xyz - 0.5);
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//binormal
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float3 binormal = 2 * (texCUBE(binormalCube, I.binVec.xyz).xyz - 0.5);
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// Get the worldspace delux
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float3 wDelux = 2 * (tex2D(deLuxMap, I.deLuxCoord.xy).xyz - 0.5);
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//Put into tangent space
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float3 tDelux;
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tDelux.x = dot(wDelux,tangent);
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tDelux.y = dot(wDelux,binormal);
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tDelux.z = dot(wDelux,normal);
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tDelux = tDelux + (tDelux/2)*(1-dot(tDelux,tDelux));//renormalize
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// Get the normal from normal map lookup
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float3 matNormal = 2 * (tex2D(normalMap, I.texCoord.xy).xyz - 0.5);
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// normal . light vector
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float4 res;
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res = saturate(dot(tDelux.xyz, matNormal.xyz).x);
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return res;
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}
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