1 files changed, 16 insertions, 0 deletions
diff --git a/src/gfx.h b/src/gfx.h
index baa19d2..d3f1ec3 100644
--- a/src/gfx.h
+++ b/src/gfx.h
@@ -92,11 +92,27 @@ SDL_Event	*GFXGetKey(void);
 SDL_Event	*GFXWaitKey(void);
 
 
+/* Lock the screen for updates
+*/
+void		GFXLock(void);
+
+
+/* Unlock the screen following updates
+*/
+void		GFXUnlock(void);
+
+
 /*
     Note that no bound checking (except for GFXPrint()) is done - it is the
     callers responsibility to plot onscreen.
 */
 
+/* Plot a point without locking.  GFXLock() and GFXUnlock() MUST surround
+   calls to this
+*/
+void		GFXFastPlot(int x, int y, Uint32 col);
+
+
 /* Plot a point
 */
 void		GFXPlot(int x, int y, Uint32 col);