Index: uspace/lib/gfx/include/gfx/render.h
===================================================================
--- uspace/lib/gfx/include/gfx/render.h	(revision 266ec54acdd67b4f0e7d168c473eb06cef24b0c7)
+++ uspace/lib/gfx/include/gfx/render.h	(revision 9c7dc8e93da9abc90efb24bba56e275432050f20)
@@ -1,4 +1,4 @@
 /*
- * Copyright (c) 2019 Jiri Svoboda
+ * Copyright (c) 2021 Jiri Svoboda
  * All rights reserved.
  *
@@ -44,4 +44,5 @@
 extern errno_t gfx_set_color(gfx_context_t *, gfx_color_t *);
 extern errno_t gfx_fill_rect(gfx_context_t *, gfx_rect_t *);
+extern errno_t gfx_update(gfx_context_t *);
 
 #endif
Index: uspace/lib/gfx/include/types/gfx/ops/context.h
===================================================================
--- uspace/lib/gfx/include/types/gfx/ops/context.h	(revision 266ec54acdd67b4f0e7d168c473eb06cef24b0c7)
+++ uspace/lib/gfx/include/types/gfx/ops/context.h	(revision 9c7dc8e93da9abc90efb24bba56e275432050f20)
@@ -1,4 +1,4 @@
 /*
- * Copyright (c) 2019 Jiri Svoboda
+ * Copyright (c) 2021 Jiri Svoboda
  * All rights reserved.
  *
@@ -51,4 +51,6 @@
 	/** Fill rectangle using the current drawing color */
 	errno_t (*fill_rect)(void *, gfx_rect_t *);
+	/** Update display */
+	errno_t (*update)(void *);
 	/** Create bitmap */
 	errno_t (*bitmap_create)(void *, gfx_bitmap_params_t *,