Fail more gracefully on platforms without compute shaders.

Assets/VolumetricFog/Editor/VolumetricFogEditor.cs

@@ -0,0 +1,17 @@
+using UnityEditor;
+
+[CustomEditor(typeof(VolumetricFog))]
+[CanEditMultipleObjects]
+public class VolumetricFogEditor : Editor
+{
+	override public void OnInspectorGUI()
+	{
+		if (!VolumetricFog.CheckSupport())
+		{
+			EditorGUILayout.HelpBox(VolumetricFog.GetUnsupportedErrorMessage(), MessageType.Error);
+			return;
+		}
+
+		DrawDefaultInspector();
+	}
+}

Assets/VolumetricFog/Editor/VolumetricFogEditor.cs.meta

@@ -0,0 +1,12 @@
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+guid: 9dc42dc79f60fe8449ca035a77f732ae
+timeCreated: 1507493299
+licenseType: Pro
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+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
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+  assetBundleVariant: