From 8935a3d7639615d142510cde24b3ef7f1e71eab5 Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pjm@nac.net>
Date: Tue, 19 Feb 2013 22:02:34 -0500
Subject: Try to get some small performance improvements.

---
diff --git a/src/area.c b/src/area.c
index b660cae..b72faf0 100644
--- a/src/area.c
+++ b/src/area.c
@@ -51,7 +51,8 @@ blit_map_layers(struct area *area)
 		SDL_FillRect(area->map_layers[l], &dstrect,
 				SDL_MapRGB(area->map_layers[l]->format,
 					0xFC, 0x00, 0xFF));
-		SDL_SetColorKey(area->map_layers[l], SDL_SRCCOLORKEY,
+		SDL_SetColorKey(area->map_layers[l], SDL_SRCCOLORKEY |
+				SDL_RLEACCEL,
 				SDL_MapRGB(area->map_layers[l]->format,
 					0xFC, 0x00, 0xFF));
 		SDL_SetColors(area->map_layers[l], colors, 0, 256);
diff --git a/src/viewport.c b/src/viewport.c
index 078d37c..05b30a6 100644
--- a/src/viewport.c
+++ b/src/viewport.c
@@ -19,7 +19,7 @@ init_viewport(int width, int height, int bpp)
 
 	debug("Setting video mode...");
 	vp->screen = SDL_SetVideoMode(width, height, bpp,
-			SDL_HWSURFACE | SDL_HWPALETTE);
+			SDL_HWSURFACE | SDL_DOUBLEBUF | SDL_HWPALETTE);
 	if (vp->screen == NULL) {
 		err(1, "Failed to set video mode (%s)", SDL_GetError());
 	}
--
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