mad fractal action

Assets/Shaders/FullscreenQuad.shader

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+//
+// 1. Add a Quad in Unity
+// 2. Parent the quad under camera, to prevent frustum culling.
+// 3. Attach this shader.
+//
+Shader "Quad/Fullscreen"
+{
+    Properties
+    {
+    }
+
+    SubShader
+    {
+        Cull Off ZWrite Off
+
+        Pass
+        {
+            CGPROGRAM
+            #pragma vertex vert
+            #pragma fragment frag
+
+            #include "UnityCG.cginc"
+
+            struct appdata
+            {
+                float4 vertex : POSITION;
+                float2 uv     : TEXCOORD0;
+            };
+
+            struct v2f
+            {
+                float2 uv : TEXCOORD0;
+                float4 vertex : SV_POSITION;
+            };
+
+            v2f vert(appdata v)
+            {
+                v2f o;
+                o.vertex = v.vertex;
+                o.vertex.xy *= 2;
+                o.uv = v.uv;
+                return o;
+            }
+
+            fixed4 frag(v2f i) : SV_Target
+            {
+                return fixed4(i.uv, 0, 1);
+            }
+            ENDCG
+        }
+    }
+}