(*This is why you need an entity, either brush or point, in your map. 'Load default pointfile? ) Select 'Yes', and you'll see a red line protruding from the nearest entity* out through the area of the leak. If there are any leaks, it'll ask you to confirm the operation (ex. Once it's done compiling, close the compile log and go to Map -> Load Point File. Select 'Normal' for Run BSP, and select 'No' for both Run VIS and Run RAD (also be sure to check the 'Don't run the game after compiling' box). Save and compile the BSP by pressing F9 or going to File -> Run Map. To check for leaks, first make sure there is at least one entity in the map (such as an 'info_player_start'), otherwise this will not work.1b, the room is sealed and will be compiled correctly. If you compile this map with that leak, vvis (the portion of the compile that determines visibility data) won't be able to determine the boundaries of the map, since the visleaves will just 'leak' out into the black void outside our map. Also, water won't render correctly if there are any leaks in the map. Worse yet, any area portals, hint brushes and occluders in the map will not work, making them useless. If there are ANY leaks in the map, the compiler won't be able to determine the boundaries of the map, and will attempt to render everything within the map all at once.

Gmod file size limit