From 7bc9bd2c9dcabe98de8d4d0a4bd9af637bb213c3 Mon Sep 17 00:00:00 2001
From: worstcase-scenario
 <83265453+worstcase-scenario@users.noreply.github.com>
Date: Wed, 21 Oct 2026 00:25:41 +0200
Subject: [PATCH] Update LIBGL_FB setting for SDL2 kmsdrm

Added a check for SDL2 kmsdrm to set LIBGL_FB.
---
 PortMaster/libgl_EmuELEC.txt | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/PortMaster/libgl_EmuELEC.txt b/PortMaster/libgl_EmuELEC.txt
index ff06759c..92745411 100644
--- a/PortMaster/libgl_EmuELEC.txt
+++ b/PortMaster/libgl_EmuELEC.txt
@@ -17,6 +17,11 @@ if [ ! -e "/dev/dri/card0" ]; then
   export LIBGL_FB=2
 fi
 
+# SDL2 kmsdrm owns the display, gl4es must not open its own gbm output
+if [ "${SDL_VIDEODRIVER}" = "kmsdrm" ]; then
+  export LIBGL_FB=0
+fi
+
 if [ -d "$PWD/gl4es.$DEVICE_ARCH" ]; then
   export LD_LIBRARY_PATH="$PWD/gl4es.$DEVICE_ARCH:$LD_LIBRARY_PATH"
 elif [ -d "$PWD/gl4es" ]; then