Add shaders

Sources/Shaders/BlendForBloom.shader

@@ -0,0 +1,222 @@
+// Upgrade NOTE: replaced 'mul(UNITY_MATRIX_MVP,*)' with 'UnityObjectToClipPos(*)'
+
+Shader "Hidden/BlendForBloom" {
+	Properties {
+		_MainTex ("Screen Blended", 2D) = "" {}
+		_ColorBuffer ("Color", 2D) = "" {}
+	}
+	
+	CGINCLUDE
+
+	#include "UnityCG.cginc"
+	
+	struct v2f {
+		float4 pos : SV_POSITION;
+		float2 uv[2] : TEXCOORD0;
+	};
+	struct v2f_mt {
+		float4 pos : SV_POSITION;
+		float2 uv[5] : TEXCOORD0;
+	};
+			
+	sampler2D _ColorBuffer;
+	sampler2D _MainTex;
+	
+	half _Intensity;
+	half4 _ColorBuffer_TexelSize;
+	half4 _MainTex_TexelSize;
+		
+	v2f vert( appdata_img v ) {
+		v2f o;
+		o.pos = UnityObjectToClipPos(v.vertex);
+		o.uv[0] =  v.texcoord.xy;
+		o.uv[1] =  v.texcoord.xy;
+		
+		#if UNITY_UV_STARTS_AT_TOP
+		if (_ColorBuffer_TexelSize.y < 0) 
+			o.uv[1].y = 1-o.uv[1].y;
+		#endif	
+		
+		return o;
+	}
+
+	v2f_mt vertMultiTap( appdata_img v ) {
+		v2f_mt o;
+		o.pos = UnityObjectToClipPos(v.vertex);
+		o.uv[4] = v.texcoord.xy;
+		o.uv[0] = v.texcoord.xy + _MainTex_TexelSize.xy * 0.5;
+		o.uv[1] = v.texcoord.xy - _MainTex_TexelSize.xy * 0.5;	
+		o.uv[2] = v.texcoord.xy - _MainTex_TexelSize.xy * half2(1,-1) * 0.5;	
+		o.uv[3] = v.texcoord.xy + _MainTex_TexelSize.xy * half2(1,-1) * 0.5;	
+		return o;
+	}
+	
+	half4 fragScreen (v2f i) : SV_Target {
+		half4 addedbloom = tex2D(_MainTex, i.uv[0].xy) * _Intensity;
+		half4 screencolor = tex2D(_ColorBuffer, i.uv[1]);
+		return 1-(1-addedbloom)*(1-screencolor);
+	}
+
+	half4 fragScreenCheap(v2f i) : SV_Target {
+		half4 addedbloom = tex2D(_MainTex, i.uv[0].xy) * _Intensity;
+		half4 screencolor = tex2D(_ColorBuffer, i.uv[1]);
+		return 1-(1-addedbloom)*(1-screencolor);
+	}
+
+	half4 fragAdd (v2f i) : SV_Target {
+		half4 addedbloom = tex2D(_MainTex, i.uv[0].xy);
+		half4 screencolor = tex2D(_ColorBuffer, i.uv[1]);
+		return _Intensity * addedbloom + screencolor;
+	}
+
+	half4 fragAddCheap (v2f i) : SV_Target {
+		half4 addedbloom = tex2D(_MainTex, i.uv[0].xy);
+		half4 screencolor = tex2D(_ColorBuffer, i.uv[1]);
+		return _Intensity * addedbloom + screencolor;
+	}
+
+	half4 fragVignetteMul (v2f i) : SV_Target {
+		return tex2D(_MainTex, i.uv[0].xy) * tex2D(_ColorBuffer, i.uv[0]);
+	}
+
+	half4 fragVignetteBlend (v2f i) : SV_Target {
+		return half4(1,1,1, tex2D(_ColorBuffer, i.uv[0]).r);
+	}
+
+	half4 fragClear (v2f i) : SV_Target {
+		return 0;
+	}
+
+	half4 fragAddOneOne (v2f i) : SV_Target {
+		half4 addedColors = tex2D(_MainTex, i.uv[0].xy);
+		return addedColors * _Intensity;
+	}
+
+	half4 frag1Tap (v2f i) : SV_Target {
+		return tex2D(_MainTex, i.uv[0].xy);
+	}
+	
+	half4 fragMultiTapMax (v2f_mt i) : SV_Target {
+		half4 outColor = tex2D(_MainTex, i.uv[4].xy);
+		outColor = max(outColor, tex2D(_MainTex, i.uv[0].xy));
+		outColor = max(outColor, tex2D(_MainTex, i.uv[1].xy));
+		outColor = max(outColor, tex2D(_MainTex, i.uv[2].xy));
+		outColor = max(outColor, tex2D(_MainTex, i.uv[3].xy));
+		return outColor;
+	}
+
+	half4 fragMultiTapBlur (v2f_mt i) : SV_Target {
+		half4 outColor = 0;
+		outColor += tex2D(_MainTex, i.uv[0].xy);
+		outColor += tex2D(_MainTex, i.uv[1].xy);
+		outColor += tex2D(_MainTex, i.uv[2].xy);
+		outColor += tex2D(_MainTex, i.uv[3].xy);
+		return outColor/4;
+	}
+
+	ENDCG 
+	
+Subshader {
+	  ZTest Always Cull Off ZWrite Off
+
+ // 0: nicer & softer "screen" blend mode	  		  	
+ Pass {    
+
+      CGPROGRAM
+      #pragma vertex vert
+      #pragma fragment fragScreen
+      ENDCG
+  }
+
+ // 1: "add" blend mode 
+ Pass {    
+
+      CGPROGRAM
+      #pragma vertex vert
+      #pragma fragment fragAdd
+      ENDCG
+  }
+ // 2: several taps, maxxed
+ Pass {    
+
+      CGPROGRAM
+      #pragma vertex vertMultiTap
+      #pragma fragment fragMultiTapMax
+      ENDCG
+  } 
+ // 3: vignette blending
+ Pass {    
+
+      CGPROGRAM
+      #pragma vertex vert
+      #pragma fragment fragVignetteMul
+      ENDCG
+  } 
+  // 4: nicer & softer "screen" blend mode(cheapest)
+ Pass {    
+
+      CGPROGRAM
+      #pragma vertex vert
+      #pragma fragment fragScreenCheap
+      ENDCG
+ }  
+  // 5: "add" blend mode (cheapest)
+ Pass {    
+
+      CGPROGRAM
+      #pragma vertex vert
+      #pragma fragment fragAddCheap
+      ENDCG
+  }     
+ // 6: used for "stable" downsampling (blur)
+ Pass {    
+
+      CGPROGRAM
+      #pragma vertex vertMultiTap
+      #pragma fragment fragMultiTapBlur
+      ENDCG
+  }   
+ // 7: vignette blending (blend to dest)
+ Pass {    
+ 	  
+ 	  Blend Zero SrcAlpha
+
+      CGPROGRAM
+      #pragma vertex vert
+      #pragma fragment fragVignetteBlend
+      ENDCG
+  }
+ // 8: clear
+ Pass {    
+ 	  
+      CGPROGRAM
+      #pragma vertex vert
+      #pragma fragment fragClear
+      ENDCG
+  }   
+ // 9: fragAddOneOne
+ Pass {    
+
+ 	  Blend One One
+ 	  
+      CGPROGRAM
+      #pragma vertex vert
+      #pragma fragment fragAddOneOne
+      ENDCG
+  }  
+ // 10: max blend
+ Pass {    
+
+ 	  BlendOp Max
+ 	  Blend One One
+ 	  
+      CGPROGRAM
+      #pragma vertex vert
+      #pragma fragment frag1Tap
+      ENDCG
+  }
+}
+
+Fallback off
+	
+} // shader