note godot problems with non-vulcan cards

README.md

@@ -23,3 +23,13 @@ PDF Dependencies
     * `lmodern`
     * `hyperref`
 - `lowdown`
+- `graph-easy`
+
+Godot Note
+===========
+
+If your [graphics card does not support vulcan](https://github.com/godotengine/godot/issues/58927), you may need to start godot like this:
+
+```bash
+godot --rendering-driver opengl3
+```