#include "ReShade.fxh"
#define LUTChroma 0.5
#define LUTLuma 0.5
#define LUTNorm float3(1.0/256,1.0/16,1.0)
texture LUTTex<string source="LUT.png";>{Width=256;Height=16;Format=RGBA8;};
sampler LUTColor{Texture=LUTTex;};
float4 LUT(float4 vpos:SV_Position,float2 texcoord:TEXCOORD):SV_Target{
float4 original=tex2D(ReShade::BackBuffer,texcoord.xy);
float low=0;
float lowLUT=low*8f;
float4 colorLUT=float4((original.rg*15.0+0.5f)*LUTNorm.xy,original.b*15.0,original.w);
colorLUT.x+=trunc(colorLUT.z)*LUTNorm.y;
colorLUT.y*=LUTNorm.z;
colorLUT.y+=trunc(lowLUT)*LUTNorm.z;
colorLUT=lerp(tex2D(LUTColor,colorLUT.xy),tex2D(LUTColor,float2(colorLUT.x+LUTNorm.y,colorLUT.y)),frac(colorLUT.z));
original.xyz=lerp(normalize(original.xyz),normalize(colorLUT.xyz),LUTChroma)*lerp(length(original.xyz),length(colorLUT.xyz),LUTLuma);
return original;}
technique LUT{
pass{
VertexShader=PostProcessVS;
PixelShader=LUT;}}Topic Author
