Don't call XInput2 multitouch APIs if they aren't supported.

I think it fixes this: http://forums.libsdl.org/viewtopic.php?t=8324&sid=ae797309f9e2084cadc1b6a7615bd0e4
libsdl-org · Sep 17, 2012 · 3e5c11c · 3e5c11c
1 parent 5495d42
commit 3e5c11c
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/video/x11/SDL_x11xinput2.c b/src/video/x11/SDL_x11xinput2.c
@@ -220,6 +220,10 @@ X11_InitXinput2Multitouch(_THIS) {
 void 
 X11_Xinput2SelectTouch(_THIS, SDL_Window *window) {
 #if SDL_VIDEO_DRIVER_X11_XINPUT2_SUPPORTS_MULTITOUCH
+    if (!X11_Xinput2IsMultitouchSupported()) {
+        return;
+    }
+
     SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
     XIEventMask eventmask;
     unsigned char mask[3] = { 0,0,0 };