DOCS/man/vo.rst: improve dmabuf-wayland documentation

DOCS/man/vo.rst

@@ -300,8 +300,16 @@ Available video output drivers are:
     as ``auto-safe``. It can still work in some circumstances without ``--hwdec`` due to
     mpv's internal conversion filters, but this is not recommended as it's a needless
     extra step. Correct output depends on support from your GPU, drivers, and compositor.
-    Weston and wlroots-based compositors like Sway and Intel GPUs are known to generally
-    work.
+    This requires the compositor and mpv to support ``xx-color-management-v4`` to
+    accurately display colorspaces that are different from the compositor
+    default (bt.601 in most cases).
+
+    .. warning::
+
+        This driver is not required for mpv to work on Wayland. ``vo=gpu``
+        and ``vo=gpu-next`` will switch to the appropriate Wayland context
+        automatically. This driver is experimental and generally lower quality
+        than ``gpu``/``gpu-next``.
 
 ``vaapi``
     Intel VA API video output driver with support for hardware decoding. Note