Initial Commit

Assets/Plugins/Light2D/Resources/Shaders/NormalMap.shader

@@ -0,0 +1,80 @@
+// Upgrade NOTE: replaced '_Object2World' with 'unity_ObjectToWorld'
+// Upgrade NOTE: replaced 'mul(UNITY_MATRIX_MVP,*)' with 'UnityObjectToClipPos(*)'
+
+/*
+
+Used to create normal map buffer.
+
+*/
+
+Shader "Light2D/Internal/Normal Map Drawer" {
+Properties {
+	_MainTex ("Base (RGB) Trans (A)", 2D) = "white" {}
+	_NormalTex ("Normalmap", 2D) = "bump" {}
+}
+
+SubShader {	
+	Tags {
+		"Queue"="Transparent" 
+		"IgnoreProjector"="True" 
+		"RenderType"="Transparent"
+		"LightObstacle"="True"
+	}
+
+	LOD 100
+	Blend SrcAlpha OneMinusSrcAlpha
+	Cull Off
+	ZWrite Off
+	Lighting Off
+
+	Pass {  
+		CGPROGRAM
+			#pragma vertex vert
+			#pragma fragment frag
+			
+			#include "UnityCG.cginc"
+
+			struct appdata_t {
+				float4 vertex : POSITION;
+				float2 texcoord : TEXCOORD0;
+				float2 tangent : TANGENT;
+			};
+
+			struct v2f {
+				float4 vertex : SV_POSITION;
+				half2 mainTexcoord : TEXCOORD0;
+				half2 normalTexcoord : TEXCOORD1;
+				half3 utangent : TEXCOORD2;
+				half3 vtangent : TEXCOORD3;
+			};
+
+			sampler2D _MainTex;
+			float4 _MainTex_ST;
+		    sampler2D _NormalTex;
+		    float4 _NormalTex_ST;
+
+			v2f vert (appdata_t v)
+			{
+				v2f o;
+				o.vertex = UnityObjectToClipPos(v.vertex);
+				o.mainTexcoord = TRANSFORM_TEX(v.texcoord, _MainTex);
+				o.normalTexcoord = TRANSFORM_TEX(v.texcoord, _NormalTex);
+				o.utangent = normalize(mul((float3x3)unity_ObjectToWorld, half3(v.tangent.x, v.tangent.y, 0)));
+				o.vtangent = normalize(mul((float3x3)unity_ObjectToWorld, half3(v.tangent.y, -v.tangent.x, 0)));
+				return o;
+			}
+			
+			fixed4 frag (v2f i) : COLOR
+			{
+				fixed4 col = tex2D(_MainTex, i.mainTexcoord);
+                fixed2 bumpMap = normalize(UnpackNormal(tex2D(_NormalTex, i.normalTexcoord)));
+				bumpMap = -bumpMap;
+				fixed2 bump = bumpMap.x*i.utangent + bumpMap.y*i.vtangent;
+				fixed2 bumpOut = bump*0.5 + 0.5;
+                return fixed4(bumpOut, 0, col.a);
+			}
+		ENDCG
+	}
+}
+
+}