[New Shader] - Distorted Motion Blur (#12)

Author: vgtle

source/shaders/distorted-motion-blur/distorted-motion-blur.mp4

@@ -0,0 +1,36 @@
+---
+description: A shader that simulates motion blur and adds a distortion effect when scrolling on the screen.
+shader:
+  title: Distorted Motion Blur
+  description: "This shader simulates a motion blur effect with a distortion effect when scrolling. You can find an example implementation of the shader in Flutter here: https://github.com/vgtle/shader_studio/tree/main."
+  screenshot: distorted-motion-blur.png
+  video: distorted-motion-blur.mp4
+# For the moment we need to record the path to this directory until Static Shock provides this
+directory: shaders/distorted-motion-blur/
+---
+```glsl
+# version 460 core
+# include <flutter/runtime_effect.glsl>
+
+uniform vec2 u_size;
+uniform vec2 u_velocity;
+uniform sampler2D u_texture;
+
+out vec4 frag_color;
+
+void main() {
+    
+    float q = 24.0;
+    vec2 p = FlutterFragCoord().xy / u_size ; 
+    vec2 v = u_velocity/ u_size / 2;
+
+    float o = -pow(p.y * 2 - 1, 6) + 1;
+    vec4 new_p = vec4(0);
+    for (int i = 0; i < q; i++) {
+        new_p += texture(u_texture, vec2(p.x +   (( (o - 1) * length(v.y) * 6 *  ((p.x  - 0.5))) ) + (v.x * i) / q, p.y + 0.01 + (v.y * i) / q));
+    }
+    new_p /= q;
+    frag_color = new_p;
+}
+
+```