--- a/Renderer/Engine/viewerSDL.cc	Mon Oct 11 14:22:09 2010 +0900
+++ b/Renderer/Engine/viewerSDL.cc	Mon Oct 11 18:56:51 2010 +0900
@@ -65,12 +65,13 @@
 	exit(1);
     }
 
-    screen = SDL_SetVideoMode(width, height, bpp, SDL_SWSURFACE);
+    screen = SDL_SetVideoMode(width, height, bpp, SDL_HWSURFACE);
     if (screen == NULL) {
 	fprintf(stderr, "Couldn't set SDL mode: %s\n", SDL_GetError());
 	SDL_Quit();
 	exit(1);
     }
+
     this->width = screen->w;
     this->height = screen->h;
     this->bpp = screen->format->BitsPerPixel;
@@ -84,6 +85,7 @@
 ViewerSDL::clean_pixels()
 {
     //bzero(pixels, sizeof(int)*width*height);
+  
     //SDL_FillRect(screen,NULL,SDL_MapRGB(screen->format,0,0,0));
 }