uploaded shaders from past lessons

Assets/Shaders/Unlit/ColorMaskBlend.shader

@@ -1,5 +1,9 @@
-//This shader is tutorialized in Part 29: Smooth Blending with Sine
+//This shader is tutorialized in Shaders For People Who Don't Know How To 
+// Shader Part 29: Smooth Blending with Sine
 //https://www.patreon.com/posts/shaders-for-who-35129311
+// This code is by Xibanya and shared under an Attribution 4.0 International 
+// (CC BY 4.0) license
+// https://creativecommons.org/licenses/by/4.0/
 Shader "Xibanya/Unlit/ColorMaskBlend"
 {
     Properties

Assets/Shaders/Unlit/Rotation2D.shader

@@ -0,0 +1,68 @@
+// Shaders For People Who Don't Know How To Shader Part 44: 2D rotation
+// https://www.patreon.com/posts/shader-tutorial-73605548
+// this code is shared under Attribution 4.0 International (CC BY 4.0) license
+// https://creativecommons.org/licenses/by/4.0/
+Shader "Xibanya/Unlit/Rotation2D"
+{
+    Properties
+    {
+        _MainTex            ("Texture", 2D) = "white" {}
+        _Rotation           ("Rotation", float) = 0
+    }
+    SubShader
+    {
+        Tags 
+        { 
+            "RenderType" = "Opaque" 
+            "PreviewType" = "Plane"
+        }
+        Cull Off
+        Pass
+        {
+            CGPROGRAM
+            #pragma vertex vert
+            #pragma fragment frag
+            #include "UnityCG.cginc"
+            struct appdata
+            {
+                float4 vertex   : POSITION;
+                float2 uv       : TEXCOORD0;
+            };
+            struct v2f
+            {
+                float4 pos  : SV_POSITION;
+                float2 uv   : TEXCOORD0;
+            };
+            sampler2D   _MainTex;
+            float4      _MainTex_ST;
+            float       _Rotation;
+
+            float2 Rotate2D(float2 uv, float angle)
+            {
+                float2x2 rotationMatrix = float2x2(
+                    cos(angle), -sin(angle),
+                    sin(angle), cos(angle)
+                    );
+                return mul(uv, rotationMatrix);
+            }
+
+            v2f vert (appdata v)
+            {
+                v2f o;
+                o.pos = UnityObjectToClipPos(v.vertex);
+                float2 uv = v.uv - 0.5;
+                uv = Rotate2D(uv, radians(_Rotation));
+                uv += 0.5;
+                o.uv = TRANSFORM_TEX(uv, _MainTex);
+                return o;
+            }
+
+            fixed4 frag(v2f i) : SV_Target
+            {
+                fixed4 col = tex2D(_MainTex, i.uv);
+                return col;
+            }
+            ENDCG
+        }
+    }
+}

Assets/Shaders/Unlit/SpriteColorMask.shader

@@ -1,24 +1,29 @@
-Shader "Xibanya/Unlit/SpriteColorMask"
+// Shaders For People Who Don't Know How To Shader Part 15: Sprites
+// https://www.patreon.com/posts/shaders-for-who-29239797
+// Code shared under Attribution 4.0 International (CC BY 4.0) license
+// https://creativecommons.org/licenses/by/4.0/
+Shader "Xibanya/Unlit/SpriteColorMask"
 {
     Properties
     {
-        [PerRendererData] _MainTex ("Sprite Texture", 2D) = "transparent" {}
-		[NoScaleOffset] _Mask("Color Mask", 2D) = "transparent" {}
-		_R("Red Channel Color", Color) = (1,1,1,1)
-		_G("Green Channel Color", Color) = (1,1,1,1)
-		_B("Blue Channel Color", Color) = (1,1,1,1)
-		_A("Alpha Color", Color) = (1,1,1,1)
-		[Enum(Off,0,Front,1,Back,2)] _Cull("Cull", float) = 2
+        [PerRendererData] _MainTex      ("Sprite Texture", 2D) = "transparent" {}
+		[NoScaleOffset] _Mask           ("Color Mask", 2D) = "transparent" {}
+		_R                              ("Red Channel Color", Color) = (1,1,1,1)
+		_G                              ("Green Channel Color", Color) = (1,1,1,1)
+		_B                              ("Blue Channel Color", Color) = (1,1,1,1)
+		_A                              ("Alpha Color", Color) = (1,1,1,1)
+		[Enum(Off,0,Front,1,Back,2)]
+        _Cull                           ("Cull", float) = 2
     }
     SubShader
     {
-		Tags
-		{
-				"Queue" = "Transparent"
-				"IgnoreProjector" = "True"
-				"RenderType" = "Transparent"
-				"PreviewType" = "Plane"
-				"CanUseSpriteAtlas" = "True"
+		Tags
+		{
+				"Queue" = "Transparent"
+				"IgnoreProjector" = "True"
+				"RenderType" = "Transparent"
+				"PreviewType" = "Plane"
+				"CanUseSpriteAtlas" = "True"
 		}
 		Cull[_Cull]
 		ZTest Off
@@ -59,11 +64,11 @@
                 return o;
             }
 
-			sampler2D _Mask;
-			half4 _R;
-			half4 _G;
-			half4 _B;
-			half4 _A;
+			sampler2D   _Mask;
+			half4       _R;
+			half4       _G;
+			half4       _B;
+			half4       _A;
 
             half4 frag (v2f i) : SV_Target
             {
@@ -79,4 +84,4 @@
             ENDCG
         }
     }
-}
+}