Document SSAO support in Compatibility in Environment and post-processing

Author: Calinou

tutorials/3d/environment_and_post_processing.rst

@@ -423,8 +423,8 @@ uniforms.
 Screen-Space Ambient Occlusion (SSAO)
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-*This feature is only available when using the Forward+ renderer, not
-Mobile or Compatibility.*
+*This feature is only available when using the Forward+ and Compatibility renderers,
+not Mobile.*
 
 As mentioned in the **Ambient** section, areas where light from light nodes
 does not reach (either because it's outside the radius or shadowed) are lit
@@ -495,6 +495,15 @@ parameters:
   materials that have an AO texture defined. Values higher than ``0.0`` will
   make the SSAO effect visible in areas darkened by AO textures.
 
+.. note::
+
+    Since Godot 4.6, a simplified version of SSAO is available in the Compatibility
+    renderer. This implementation has a different look, but should perform
+    significantly better on low-end devices compared to SSAO in Forward+.
+
+    When using the Compatibility renderer, only the **Radius** and **Intensity**
+    parameters can be adjusted.
+
 .. _doc_environment_and_post_processing_ssil:
 
 Screen-Space Indirect Lighting (SSIL)

tutorials/rendering/renderers.rst

@@ -261,7 +261,7 @@ See :ref:`doc_environment_and_post_processing` for more information.
 +-------------------------+--------------------------+--------------------------+--------------------------+
 | Screen-Space Reflections| ❌ Not supported.        | ❌ Not supported.        | ✔️ Supported.            |
 +-------------------------+--------------------------+--------------------------+--------------------------+
-| Screen-Space Ambient    | ❌ Not supported.        | ❌ Not supported.        | ✔️ Supported.            |
+| Screen-Space Ambient    | ✔️ Supported.            | ❌ Not supported.        | ✔️ Supported.            |
 | Occlusion (SSAO)        |                          |                          |                          |
 +-------------------------+--------------------------+--------------------------+--------------------------+
 | Screen-Space            | ❌ Not supported.        | ❌ Not supported.        | ✔️ Supported.            |