Insanely huge initial commit

Assets/ProCamera2D/Runtime/Code/Helpers/TransitionFX/Resources/PC2D_Fade.shader

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+Shader "Hidden/ProCamera2D/TransitionsFX/Fade" 
+{
+    Properties 
+    {
+        _MainTex ("Texture", 2D) = "white" {}
+        _Step ("Step", Range(0, 1)) = 0
+        _BackgroundColor ("Background Color", Color) = (0, 0, 0, 1)
+    }
+    SubShader
+	{
+		// No culling or depth
+		Cull Off ZWrite Off ZTest Always
+
+		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 = UnityObjectToClipPos(v.vertex);
+				o.uv = v.uv;
+				return o;
+			}
+
+            sampler2D _MainTex;
+            float _Step;
+            float4 _BackgroundColor;
+
+            fixed4 frag (v2f i) : SV_Target
+            {
+                fixed4 colour = _BackgroundColor;
+                colour = tex2D(_MainTex, i.uv);
+				return (saturate(colour) * (1 - _Step)) + (_BackgroundColor * _Step);
+            }
+
+            ENDCG
+        }
+    }
+}