Increase .shadergraph version number when Hybrid Renderer V2 is enabled, to make shader graphs automatically reimport (#16)

* Increase .shadergraph version number when Hybrid Renderer V2 is enabled, to make shader graphs automatically re-import.

* Remove double ifdef, just ENABLE_HYBRID_RENDERER_V2 is now consistently used throughout.

Author: JussiKnuuttila

com.unity.shadergraph/Editor/Importers/ShaderGraphImporter.cs

@@ -14,7 +14,16 @@
 namespace UnityEditor.ShaderGraph
 {
     [ExcludeFromPreset]
+#if ENABLE_HYBRID_RENDERER_V2
+    // Bump the version number when Hybrid Renderer V2 is enabled, to make
+    // sure that all shader graphs get re-imported. Re-importing is required,
+    // because the shader graph codegen is different for V2.
+    // This ifdef can be removed once V2 is the only option.
+    [ScriptedImporter(100, Extension, 3)]
+#else
     [ScriptedImporter(32, Extension, 3)]
+#endif
+
     class ShaderGraphImporter : ScriptedImporter
     {
         public const string Extension = "shadergraph";