Aggregate screen updates

Aggregate screen updates to one per cycle, using SDL_UpdateRects().

Hopefully this should avoid the sluggishness on MacOS X, but that
remain to be seen...

1 files changed, 3 insertions, 0 deletions

diff --git a/keyboard.c b/keyboard.c
index bcb905b..5d586c8 100644
--- a/keyboard.c
+++ b/keyboard.c
@@ -70,11 +70,14 @@ SDL_KeyboardEvent *get_key(void)
   if ( (ke = poll_key()) )
     return ke;
 
+  update_screen();
+
   while ( SDL_WaitEvent(&event) ) {
     if ( event.type == SDL_KEYDOWN )
       return &event.key;
     else if ( event.type == SDL_USEREVENT && event.user.code == event_blink )
       update_blink();
   }
+
   return NULL;
 }