Move vertex animation files to performance

Closes #4123

classes/class_multimesh.rst

@@ -27,7 +27,7 @@ Since instances may have any behavior, the AABB used for visibility must be prov
 Tutorials
 ---------
 
-- :doc:`../tutorials/3d/vertex_animation/animating_thousands_of_fish`
+- :doc:`../tutorials/performance/vertex_animation/animating_thousands_of_fish`
 
 - :doc:`../tutorials/optimization/using_multimesh`
 

classes/class_multimeshinstance.rst

@@ -23,7 +23,7 @@ This is useful to optimize the rendering of a high amount of instances of a give
 Tutorials
 ---------
 
-- :doc:`../tutorials/3d/vertex_animation/animating_thousands_of_fish`
+- :doc:`../tutorials/performance/vertex_animation/animating_thousands_of_fish`
 
 - :doc:`../tutorials/3d/using_multi_mesh_instance`
 

classes/class_particles.rst

@@ -27,7 +27,7 @@ Use the ``process_material`` property to add a :ref:`ParticlesMaterial<class_Par
 Tutorials
 ---------
 
-- :doc:`../tutorials/3d/vertex_animation/controlling_thousands_of_fish`
+- :doc:`../tutorials/performance/vertex_animation/controlling_thousands_of_fish`
 
 - `Third Person Shooter Demo <https://godotengine.org/asset-library/asset/678>`__
 

tutorials/3d/index.rst

@@ -18,6 +18,3 @@
    using_gridmaps
    using_multi_mesh_instance
    csg_tools
-   fps_tutorial/index
-   vertex_animation/index
-   portals/index

tutorials/optimization/index.rst

@@ -71,7 +71,10 @@ GPU
 
 .. toctree::
    :maxdepth: 1
-   :name: toc-learn-features-2d-optimization
+   :name: toc-learn-features-3d-optimization
+
+   optimizing_3d_performance
+   vertex_animation/index
 
    batching