AppImage: better handle libOpenGL.so.0

the previous actually didn't work properly, because uv-qt depend
on libQt6OpenGL.so.6 which in turn depend on libOpenGL.so.0. But
LD_LIBRARY_PATH is not set inside the AI so the transitive dep
is not handled and thus the preload is not applied.

Querying libQt6OpenGL.so.6 directly also don't work because it resolves
to the libOpenGL.so.0 in the same library, from which we cannot deduce
if its counterpart is inside the system.

Author: MartinPulec

data/scripts/Linux-AppImage/AppRun

@@ -263,6 +263,20 @@ setup_wayland() {
         n_ld_library_path="$n_ld_library_path:$AI_LIB_PATH/wayland"
 }
 
+setup_libopengl() {
+        qt_ogl=$(echo "$DIR"/usr/lib/libQt[5-9]OpenGL.so*)
+        LOADER=$(get_loader)
+        if [ ! -x "$LOADER" ] || [ ! -f "$qt_ogl" ]; then
+                return
+        fi
+        ldd=$(LD_TRACE_LOADED_OBJECTS=1 "$LOADER" "$qt_ogl")
+        if ! echo "$ldd" | grep libOpenGL.so.0 | grep -q 'not found'; then
+                return # we have libOpenGL.so.0 in system
+        fi
+        debug_msg "Using bundled libOpenGL.so.0*"
+        n_ld_library_path="$n_ld_library_path:$AI_LIB_PATH/libopengl"
+}
+
 add_whitelist() {
         # expand tilde expansion (like ~/video.mp4; only single ~ now)
         # shellcheck disable=SC2088 # intentional
@@ -370,11 +384,11 @@ get_custom_firejail_rules() {
 . "$DIR/scripts/preload.sh"
 setup_vaapi
 setup_wayland
+setup_libopengl
 # ultragrid_aplay_jack.so is not used because it loads JACK with dlopen,
 # while portaudio is linked directly to JACK library
 set_ld_preload ultragrid_aplay_portaudio.so libjack
 set_ld_preload ultragrid_vidcap_pipewire.so libpipewire
-set_ld_preload_exe "$AI_LIB_PATH/../bin/uv-qt" libOpenGL.so.0
 
 ## @param $@   <tool> <arguments
 setup_firejail() {

data/scripts/Linux-AppImage/create-appimage.sh

@@ -111,6 +111,12 @@ if ls $APPPREFIX/lib/libwayland-* >/dev/null 2>&1; then
         mv $APPPREFIX/lib/libwayland-* $APPPREFIX/lib/wayland
 fi
 
+# hide libOpenGL.so.0 libraries
+if [ -f $APPPREFIX/lib/libOpenGL.so.0 ]; then
+        mkdir $APPPREFIX/lib/libopengl
+        mv $APPPREFIX/lib/libOpenGL.so.0 $APPPREFIX/lib/libopengl
+fi
+
 add_fonts
 
 if command -v curl >/dev/null; then