GameScope: Only add internal and show resolution if width and height …

…values are valid

steamtinkerlaunch

@@ -7,7 +7,7 @@
 PREFIX="/usr"
 PROGNAME="SteamTinkerLaunch"
 NICEPROGNAME="Steam Tinker Launch"
-PROGVERS="v14.0.20240829-2 (gamescope-use-getgamescopearg-for-gsshwres-gsintres)"
+PROGVERS="v14.0.20240829-3 (gamescope-use-getgamescopearg-for-gsshwres-gsintres)"
 PROGCMD="${0##*/}"
 PROGINTERNALPROTNAME="Proton-stl"
 SHOSTL="stl"
@@ -11825,19 +11825,25 @@ function GameScopeGui {
 
 						# Build the GameScope arguments string
 						unset GAMESCOPE_ARGS
+						GAMESCOPE_ARGS=""
+
+						# Internal width/height (-w, -h) broken out from string like '1280x720'
+						# NOTE: In future if `GSINTW` is blank but `GSINTH` is set, we could calculate a corresponding 16:9 width like GameScope does
 						GSINTW1="${GSINTRES%x*}"
 						GSINTW="${GSINTW1%%-*}"
 						GSINTH1="${GSINTRES#*x}"
 						GSINTH="${GSINTH1%%-*}"
-						GAMESCOPE_ARGS="-w ${GSINTW} -h ${GSINTH}"
 
+						# Show width/height (-W, -H) broken out from string like '1280x720'
+						# NOTE: In future if `GSINTW` is blank but `GSINTH` is set, we could calculate a corresponding 16:9 width like GameScope does
 						GSSHWW1="${GSSHWRES%x*}"
 						GSSHWW="${GSSHWW1%%-*}"
 						GSSHWH1="${GSSHWRES#*x}"
 						GSSHWH="${GSSHWH1%%-*}"
-						GAMESCOPE_ARGS="${GAMESCOPE_ARGS} -W ${GSSHWW} -H ${GSSHWH}"
 
 						### GENERAL OPTIONS ###
+						if [ -n "$GSINTW" ] && [ -n "$GSINTH" ]                         ; then  GAMESCOPE_ARGS="${GAMESCOPE_ARGS} -w ${GSINTW} -h ${GSINTH}"; fi
+						if [ -n "$GSSHWW" ] && [ -n "$GSSHWH" ]                         ; then  GAMESCOPE_ARGS="${GAMESCOPE_ARGS} -W ${GSSHWW} -H ${GSSHWH}"; fi
 						if [ "$GSFLR" -eq "$GSFLR" ] 2>/dev/null                        ; then  GAMESCOPE_ARGS="${GAMESCOPE_ARGS} -r ${GSFLR}"; fi
 						if [ "$GSFLU" -eq "$GSFLU" ] 2>/dev/null                        ; then  GAMESCOPE_ARGS="${GAMESCOPE_ARGS} -o ${GSFLU}"; fi
 						if [ "$GSFS" == "TRUE" ]                                        ; then  GAMESCOPE_ARGS="${GAMESCOPE_ARGS} -f"; fi