Editor stuff

Assets/Plugins/com.unity.uiextensions/Runtime/Resources/Shaders/UI Particle AddSmooth.shader

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+Shader "UI Extensions/Particles/Additive (Soft)" {
+Properties {
+	_MainTex ("Particle Texture", 2D) = "white" {}
+	_InvFade ("Soft Particles Factor", Range(0.01,3.0)) = 1.0
+
+		_StencilComp ("Stencil Comparison", Float) = 8
+    _Stencil ("Stencil ID", Float) = 0
+    _StencilOp ("Stencil Operation", Float) = 0
+    _StencilWriteMask ("Stencil Write Mask", Float) = 255
+    _StencilReadMask ("Stencil Read Mask", Float) = 255
+
+    _ColorMask ("Color Mask", Float) = 15
+
+    [Toggle(UNITY_UI_ALPHACLIP)] _UseUIAlphaClip ("Use Alpha Clip", Float) = 0
+}
+
+Category {
+	Tags { "Queue"="Transparent" "IgnoreProjector"="True" "RenderType"="Transparent" "PreviewType"="Plane" "CanUseSpriteAtlas"="True"  }
+	Blend One OneMinusSrcColor
+	ColorMask RGB
+	Cull Off Lighting Off ZWrite Off
+	ZTest [unity_GUIZTestMode]
+
+	SubShader {
+
+		Stencil
+        {
+            Ref [_Stencil]
+            Comp [_StencilComp]
+            Pass [_StencilOp] 
+            ReadMask [_StencilReadMask]
+            WriteMask [_StencilWriteMask]
+        }
+
+		Pass {
+		
+			CGPROGRAM
+			#pragma vertex vert
+			#pragma fragment frag
+			#pragma target 2.0
+			#pragma multi_compile_particles
+			#pragma multi_compile_fog
+
+			#include "UnityCG.cginc"
+			#include "UnityUI.cginc"
+
+                #pragma multi_compile __ UNITY_UI_ALPHACLIP
+
+			sampler2D _MainTex;
+			fixed4 _TintColor;
+			
+			struct appdata_t {
+				float4 vertex : POSITION;
+				fixed4 color : COLOR;
+				float2 texcoord : TEXCOORD0;
+			};
+
+			struct v2f {
+				float4 vertex : SV_POSITION;
+				fixed4 color : COLOR;
+				float2 texcoord : TEXCOORD0;
+				UNITY_FOG_COORDS(1)
+				#ifdef SOFTPARTICLES_ON
+				float4 projPos : TEXCOORD2;
+				#endif
+			};
+
+			float4 _MainTex_ST;
+			
+			v2f vert (appdata_t IN)
+			{
+				v2f v;
+				v.vertex = UnityObjectToClipPos(IN.vertex);
+				#ifdef SOFTPARTICLES_ON
+				v.projPos = ComputeScreenPos (v.vertex);
+				COMPUTE_EYEDEPTH(v.projPos.z);
+				#endif
+				v.color = IN.color;
+				v.texcoord = TRANSFORM_TEX(IN.texcoord,_MainTex);
+				UNITY_TRANSFER_FOG(v,v.vertex);
+				return v;
+			}
+
+			sampler2D_float _CameraDepthTexture;
+			float _InvFade;
+			
+			fixed4 frag (v2f i) : SV_Target
+			{
+				#ifdef SOFTPARTICLES_ON
+				float sceneZ = LinearEyeDepth (SAMPLE_DEPTH_TEXTURE_PROJ(_CameraDepthTexture, UNITY_PROJ_COORD(i.projPos)));
+				float partZ = i.projPos.z;
+				float fade = saturate (_InvFade * (sceneZ-partZ));
+				i.color.a *= fade;
+				#endif
+				
+				half4 col = i.color * tex2D(_MainTex, i.texcoord);
+				col.rgb *= col.a;
+				UNITY_APPLY_FOG_COLOR(i.fogCoord, col, fixed4(0,0,0,0)); // fog towards black due to our blend mode
+				return col;
+			}
+			ENDCG 
+		}
+	} 
+}
+}