added chromatic aberration and prepared restructoring by moving 2d filter to Image-Filtering

Image.glsl

@@ -0,0 +1,24 @@
+    
+const float Samples = 4.;
+const float Strength = 0.085; // 2.5%
+    
+void mainImage( out vec4 fragColor, in vec2 fragCoord )
+{
+    vec2 uv = fragCoord/iResolution.xy-.5;
+    vec3 col = vec3(0);
+    
+    vec3 f = 1. - length(uv) * Strength*vec3(2.,1.,0.);
+    
+    for (float i = 0.; i < Samples; i++)
+    {
+        vec3 fs = mix(f, vec3(1), i/Samples);
+        col += vec3(
+            texture(iChannel0, uv * fs.x+.5).r,
+            texture(iChannel0, uv * fs.y+.5).g,
+            texture(iChannel0, uv * fs.z+.5).b
+        );
+    }
+    col /= Samples;
+
+    fragColor = vec4(col,1.0);
+}

README.md

@@ -1,3 +1,7 @@
-# Shadertoy-Shaders
+# Image-Filtering
-
+## About
-Repository for every shader I've written for shadertoy
+This folder contains various filter that can be applied to 2D images. Every shader is written in GLSL and is supposed to deliver a simple
+handson sample implementation. With some filters even implementing some optimization measures such as quicker blurs or magic numbers instead of constant functions.
+## Content
+- Bilateral Filter
+- Chromatic Aberration

READMME.md

@@ -0,0 +1,5 @@
+# Chromatic-Aberration
+![overview.png](https://git.teridax.de/teridax/Shadertoy-Shaders/raw/branch/main/Chromatic-Aberration/overview.png)
+
+This is a crude implementation of a 2D filter mimicing the effect of chromatic aberration which happens with real world lenses
+that are unable to focus light of different wavelengths to the same focal plane.