Change rendering system to use function pointers, see Issue 31 c38 : preliminary work to make the same executable handle Layers or Anims. Fixed an old issue where Lasso-ing a brush with right mouse button wouldn't erase cleanly (visual). Fixed an old issue where picking colors in layer 5 would not 'see' through layers.

git-svn-id: svn://pulkomandy.tk/GrafX2/trunk@1906 416bcca6-2ee7-4201-b75f-2eb2f807beb1

src/layers.c

@@ -89,6 +89,7 @@ void Layer_activate(int layer, short side)
     Update_depth_buffer(); // Only need the depth buffer
   //Download_infos_page_main(Main_backups->Pages);
   //Update_FX_feedback(Config.FX_Feedback);
+  Update_pixel_renderer();
   Display_all_screen();
   Display_layerbar();
   Display_cursor();