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-rw-r--r--docs/env_vars.md6
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@@ -45,6 +45,12 @@ wlroots reads these environment variables
* *WLR_RENDERER_ALLOW_SOFTWARE*: allows the gles2 renderer to use software
rendering
+## scenes
+
+* *WLR_SCENE_DEBUG_DAMAGE*: specifies debug options for screen damage related
+tasks for compositors that use scenes. (available options: NONE, RERENDER,
+HIGHLIGHT)
+
# Generic
* *DISPLAY*: if set probe X11 backend in `wlr_backend_autocreate`