Kingeric1992's Chromatic Aberration

Fixed from this post:

kingeric1992 wrote: Tested in ENB

My flickr: www.flickr.com/photos/125864770@N06/

ported version, haven't tested in reshade.

//config
#define CA_Curve     2
#define CA_Scale     0.005
#define CA_BlurScale 0.2

Warning: Spoiler!

//distortion function
float2 Distortion( float2 coord, float curve, float scale)
{
    float  r = length(coord);
    return pow( 2 * r, curve) * coord/r * scale;
}

float4 PS_Chromatic_Pre(in float4 pos : SV_Position, in float2 texcoord : TEXCOORD) : COLOR
{
//.rgb == color, .a == offset
// or use preprocessor to set values in config
float4 Spectrum[7] =
{
    float4(1.0, 0.0, 0.0,  1.0),//red
    float4(1.0, 0.5, 0.0,  0.7),//orange
    float4(1.0, 1.0, 0.0,  0.3),//yellow
    float4(0.0, 1.0, 0.0,  0.0),//green  
    float4(0.0, 0.0, 1.0, -0.6),//blue  
    float4(0.3, 0.0, 0.5, -0.8),//indigo  
    float4(0.1, 0.0, 0.2, -1.0) //purple 
};
    float2 pixelSize = {1, ScreenSize.z};               //ratio fix
    float2 offset    = (texcoord - 0.5) * pixelSize;       //length to center with ratio correction
           offset    = Distortion(offset, CA_Curve, CA_Scale) / pixelSize;
    float4 CA        = 0;
    for(int i=0; i<7 i++)
        CA.rgb = max(CA.rgb, tex2D(RFX_backbufferColor, texcoord  - offset * Spectrum[i].a).rgb * Spectrum[i].rgb);
    return  CA ;
}

float4 PS_Chromatic_Main(in float4 pos : SV_Position, in float2 texcoord : TEXCOORD) : COLOR
{
    float2 pixelSize = {1, ScreenSize.z};            //ratio fix
    float  weight[11]= {0.082607, 0.080977, 0.076276, 0.069041, 0.060049, 0.050187, 0.040306, 0.031105, 0.023066, 0.016436, 0.011254};
    float4 CA        =  tex2D(ChroScaleSampler, texcoord ) * weight[0];
    float2 offset    = (texcoord - 0.5) * pixelSize; 
           offset    = Distortion(offset, CA_Curve, CA_Scale) * CA_BlurScale  * 0.1 / pixelSize ;
    for(int i=1; i<11; i++)
    {
        CA += tex2D(ChroScaleSampler, texcoord + offset * i) * weight[i];
        CA += tex2D(ChroScaleSampler, texcoord - offset * i) * weight[i];
    }
    return CA;//or to other PP
}    

As you can see, blur radius is matching to CA scale, around 1/10 CA_Scale looks pretty decent to me.

also CA is distortion alright, light with different wavelength can't focused on same spot == off focus == blur.

It didn't compile before, but i have fixed it and now it does.

Download: d.maxfile.ro/hsuykqbmtw.fx

This shader is meant to be used Standalone, i may make a Framework version of it soon.