From 2cbf8a918bd2590212f2b752259c3ce30b84cd30 Mon Sep 17 00:00:00 2001
From: Erwin Boskma <erwin@horus.nu>
Date: Thu, 1 Dec 2022 10:17:56 +0100
Subject: [PATCH] Enable full composition pipeline to reduce screen tearing

---
 machines/mimir/hardware-configuration.nix | 25 ++++++++++++++++++++++-
 1 file changed, 24 insertions(+), 1 deletion(-)

diff --git a/machines/mimir/hardware-configuration.nix b/machines/mimir/hardware-configuration.nix
index 3adc75e..157b30e 100644
--- a/machines/mimir/hardware-configuration.nix
+++ b/machines/mimir/hardware-configuration.nix
@@ -50,5 +50,28 @@
     };
   };
 
-  services.xserver.videoDrivers = [ "nvidia" ];
+  services.xserver = {
+    videoDrivers = [ "nvidia" ];
+
+    # Section "Screen"
+    #   Identifier     "Screen0"
+    #   Device         "Device0"
+    #   Monitor        "Monitor0"
+    #   DefaultDepth    24
+    #   Option         "Stereo" "0"
+    #   Option         "nvidiaXineramaInfoOrder" "DFP-2"
+    #   Option         "metamodes" "DP-4: nvidia-auto-select +3840+0 {ForceCompositionPipeline=On, ForceFullCompositionPipeline=On, AllowGSYNCCompatible=On}, DP-0: nvidia-auto-select +0+0 {ForceCompositionPipeline=On, ForceFullCompositionPipeline=On, AllowGSYNCCompatible=On}"
+    #   Option         "SLI" "Off"
+    #   Option         "MultiGPU" "Off"
+    #   Option         "BaseMosaic" "off"
+    #   SubSection     "Display"
+    #     Depth       24
+    #   EndSubSection
+    # EndSection
+
+    screenSection = ''
+      Option "metamodes" "DP-0: nvidia-auto-select +0+0 {ForceFullCompositionPipeline=On, AllowGSYNCCompatible=On}, DP-4: nvidia-auto-select +3840+0 {ForceFullCompositionPipeline=On, AllowGSYNCCompatible=On}"
+      Option "TripleBuffer" "On"
+    '';
+  };
 }