From 0757bf5a5cbb034a44b9ce03c3784a2eb1169cb2 Mon Sep 17 00:00:00 2001
From: Sophie Herold <sophie@hemio.de>
Date: Thu, 4 Apr 2024 22:43:48 +0200
Subject: [PATCH] main: Set GDK_DEBUG=gl-no-fractional by default

---
 NEWS        | 5 +++++
 src/main.rs | 6 ++++++
 2 files changed, 11 insertions(+)

diff --git a/NEWS b/NEWS
index 9d5bc7c..8205093 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,8 @@
+46.2
+====
+
+- Fix fractional scaling beeing blury by setting GDK_DEBUG=gl-no-fractional as default
+
 46.1
 ====
 
diff --git a/src/main.rs b/src/main.rs
index 4da0c59..3b9015a 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -78,6 +78,12 @@ fn main() -> glib::ExitCode {
         std::env::set_var("GSK_RENDERER", "gl");
     }
 
+    // Don't use gl renderer does not properly support fractional scaling
+    // <https://gitlab.gnome.org/GNOME/loupe/-/issues/346>
+    if std::env::var("GDK_DEBUG").is_err() {
+        std::env::set_var("GDK_DEBUG", "gl-no-fractional");
+    }
+
     let mut log_builder = env_logger::builder();
     log_builder.format_timestamp_millis();