[layers] NOLAYERS option at compile time. Unfinished.

git-svn-id: svn://pulkomandy.tk/GrafX2/branches/layers@1140 416bcca6-2ee7-4201-b75f-2eb2f807beb1

main.c

@@ -639,6 +639,7 @@ int Init_program(int argc,char * argv[])
   Spare_image_width=Screen_width/Pixel_width;
   Spare_image_height=Screen_height/Pixel_height;
   
+  #ifndef NOLAYERS
   Visible_image[0].Width = 0;
   Visible_image[0].Height = 0;
   Visible_image[0].Image = NULL;
@@ -648,6 +649,7 @@ int Init_program(int argc,char * argv[])
   Visible_image_depth_buffer.Width = 0;
   Visible_image_depth_buffer.Height = 0;
   Visible_image_depth_buffer.Image = NULL;
+  #endif
   
   // Allocation de mémoire pour les différents écrans virtuels (et brosse)
   if (Init_all_backup_lists(Screen_width,Screen_height)==0)