Add additive shader.

Assets/Cryville/Crtr/GenericResources.cs

@@ -33,6 +33,7 @@ namespace Cryville.Crtr {
 			Materials.Add("-SpriteMat", Resources.Load<Material>("Materials/SpriteMat"));
 
 			Shaders.Add("default", Shader.Find("Sprites/Default"));
+			Shaders.Add("additive", Shader.Find("Sprites/Additive"));
 
 			loaded = true;
 		}

Assets/Resources/Shaders.meta

@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 9bd2dd8289f72d5479fc93154ddaf762
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Resources/Shaders/Sprites-Additive.shader

@@ -0,0 +1,74 @@
+// Upgrade NOTE: replaced 'mul(UNITY_MATRIX_MVP,*)' with 'UnityObjectToClipPos(*)'
+
+Shader "Sprites/Additive"
+{
+    Properties
+    {
+        [PerRendererData] _MainTex("Sprite Texture", 2D) = "white" {}
+        _Color("Tint", Color) = (1,1,1,1)
+        [MaterialToggle] PixelSnap("Pixel snap", Float) = 0
+    }
+
+    SubShader
+    {
+        Tags
+        {
+            "Queue" = "Transparent"
+            "IgnoreProjector" = "True"
+            "RenderType" = "Transparent"
+            "PreviewType" = "Plane"
+            "CanUseSpriteAtlas" = "True"
+        }
+
+        Cull Off
+        Lighting Off
+        ZWrite Off
+        Fog { Mode Off }
+        Blend SrcAlpha One
+
+        Pass
+        {
+        CGPROGRAM
+            #pragma vertex vert
+            #pragma fragment frag
+            #pragma multi_compile DUMMY PIXELSNAP_ON
+            #include "UnityCG.cginc"
+
+            struct appdata_t {
+                float4 vertex   : POSITION;
+                float4 color    : COLOR;
+                float2 texcoord : TEXCOORD0;
+            };
+
+            struct v2f {
+                float4 vertex   : SV_POSITION;
+                fixed4 color : COLOR;
+                half2 texcoord  : TEXCOORD0;
+            };
+
+            fixed4 _Color;
+
+            v2f vert(appdata_t IN) {
+                v2f OUT;
+                OUT.vertex = UnityObjectToClipPos(IN.vertex);
+                OUT.texcoord = IN.texcoord;
+                OUT.color = IN.color * _Color;
+                #ifdef PIXELSNAP_ON
+                OUT.vertex = UnityPixelSnap(OUT.vertex);
+                #endif
+
+                return OUT;
+            }
+
+            sampler2D _MainTex;
+
+            fixed4 frag(v2f IN) : SV_Target
+            {
+                fixed4 c = tex2D(_MainTex, IN.texcoord) * IN.color;
+                c.rgb *= c.a;
+                return c;
+            }
+        ENDCG
+        }
+    }
+}

Assets/Resources/Shaders/Sprites-Additive.shader.meta

@@ -0,0 +1,10 @@
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+guid: 566d6ad96aab9ea4599b9595dc35f01d
+ShaderImporter:
+  externalObjects: {}
+  defaultTextures: []
+  nonModifiableTextures: []
+  preprocessorOverride: 0
+  userData: 
+  assetBundleName: 
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