1 files changed, 2 insertions, 0 deletions

diff --git a/src/ui/window.h b/src/ui/window.h
index b4e348d2..5abf23eb 100644
--- a/src/ui/window.h
+++ b/src/ui/window.h
@@ -118,6 +118,8 @@ struct Impl_MainWindow {
     SDL_Texture * appIcon;
     int           keyboardHeight; /* mobile software keyboards */
     int           maxDrawableHeight;
+    iBool         enableBackBuf; /* only used on macOS with Metal (helps with refresh glitches for some reason??) */
+    SDL_Texture * backBuf; /* enables refreshing the window without redrawing anything */
 };
 
 iLocalDef enum iWindowType type_Window(const iAnyWindow *d) {