Initial commit: Unity WordConnect project

Assets/WordConnectGameToolkit/Materials/Shaders/Overlay.shader

@@ -0,0 +1,71 @@
+// Upgrade NOTE: replaced 'mul(UNITY_MATRIX_MVP,*)' with 'UnityObjectToClipPos(*)'
+
+//Somehow achieves an effect similar to this:
+ //#define BlendOverlayf(base, blend)     (base < 0.5 ? (2.0 * base * blend) : (1.0 - 2.0 * (1.0 - base) * (1.0 - blend)))
+
+Shader "Photoshop/Overlay"
+{
+    Properties
+    {
+        _MainTex("Base (RGB) Trans (A)", 2D) = "white" {}
+    }
+
+        SubShader
+    {
+        Tags {"Queue" = "Transparent" "IgnoreProjector" = "True" "RenderType" = "Transparent"}
+        ZWrite Off Lighting Off Cull Off Fog { Mode Off } Blend DstColor SrcColor
+        LOD 110
+
+        Pass
+        {
+            CGPROGRAM
+            #pragma vertex vert_vct
+            #pragma fragment frag_mult 
+            #pragma fragmentoption ARB_precision_hint_fastest
+            #include "UnityCG.cginc"
+
+            sampler2D _MainTex;
+            float4 _MainTex_ST;
+
+            struct vin_vct
+            {
+                float4 vertex : POSITION;
+                float4 color : COLOR;
+                float2 texcoord : TEXCOORD0;
+            };
+
+            struct v2f_vct
+            {
+                float4 vertex : POSITION;
+                fixed4 color : COLOR;
+                half2 texcoord : TEXCOORD0;
+            };
+
+            v2f_vct vert_vct(vin_vct v)
+            {
+                v2f_vct o;
+                o.vertex = UnityObjectToClipPos(v.vertex);
+                o.color = v.color;
+                o.texcoord = v.texcoord;
+                return o;
+            }
+
+            float4 frag_mult(v2f_vct i) : COLOR
+            {
+                float4 tex = tex2D(_MainTex, i.texcoord);
+
+                float4 final;
+                final.rgb = i.color.rgb * tex.rgb * 2;
+                final.a = i.color.a * tex.a;
+                return lerp(float4(0.5f,0.5f,0.5f,0.5f), final, final.a);
+
+            }
+
+            ENDCG
+
+        }
+
+
+    }
+
+}