Fix selection on 3D viewport with half resolution

editor/plugins/spatial_editor_plugin.cpp

@@ -298,6 +298,7 @@ ObjectID SpatialEditorViewport::_select_ray(const Point2 &p_pos, bool p_append,
 
 	Vector3 ray = _get_ray(p_pos);
 	Vector3 pos = _get_ray_pos(p_pos);
+	Vector2 shrinked_pos = p_pos / viewport_container->get_stretch_shrink();
 
 	Vector<ObjectID> instances = VisualServer::get_singleton()->instances_cull_ray(pos, ray, get_tree()->get_root()->get_world()->get_scenario());
 	Set<Ref<EditorSpatialGizmo> > found_gizmos;
@@ -326,7 +327,7 @@ ObjectID SpatialEditorViewport::_select_ray(const Point2 &p_pos, bool p_append,
 		Vector3 normal;
 
 		int handle = -1;
-		bool inters = seg->intersect_ray(camera, p_pos, point, normal, &handle, p_alt_select);
+		bool inters = seg->intersect_ray(camera, shrinked_pos, point, normal, &handle, p_alt_select);
 
 		if (!inters)
 			continue;