From b8c429facbacbcd0cdda94f717c29b58d9f65414 Mon Sep 17 00:00:00 2001
From: Ian Douglas Scott <idscott@system76.com>
Date: Mon, 14 Oct 2024 19:49:45 -0700
Subject: [PATCH] Add `COSMIC_DISABLE_DIRECT_SCANOUT` env var

Like `anvil`. Useful for testing and working around issues.
---
 src/backend/kms/surface/mod.rs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/backend/kms/surface/mod.rs b/src/backend/kms/surface/mod.rs
index a10ab9e2..f03b5c89 100644
--- a/src/backend/kms/surface/mod.rs
+++ b/src/backend/kms/surface/mod.rs
@@ -624,7 +624,10 @@ impl SurfaceThreadState {
             cursor_size,
             Some(gbm),
         ) {
-            Ok(compositor) => {
+            Ok(mut compositor) => {
+                if crate::utils::env::bool_var("COSMIC_DISABLE_DIRECT_SCANOUT").unwrap_or(false) {
+                    compositor.use_direct_scanout(false);
+                }
                 self.active.store(true, Ordering::SeqCst);
                 self.compositor = Some(compositor);
                 Ok(())