Created a prototype for the effect

UOP1_Project/Assets/Settings/Graphics/ToonRendererData.asset

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UOP1_Project/ProjectSettings/TagManager.asset

   - 
   - 
   - PostProcessing
-  - 
+  - HideWaterMask
   - 
   - 
   - 

UOP1_Project/Assets/DepthMask.shader

+Shader "UOP1/DepthMask"
+{
+	SubShader{
+
+		// Don't draw in the RGBA channels
+		ColorMask 0
+		// Don't write in the Depth Buffer
+		ZWrite Off
+
+		// Do nothing specific in the pass
+		Pass {}
+	}
+}

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