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Outdoor Portalling - Part 2 by Cornrow Wallace
Here is pt. 2 of my Outdoor Portalling tutorial. Use this method in conjunction with pt. 1.
Using caulk brushes below terrain as described in pt. 1 of this tutorial helps increase FPS and lower visible tris for hills, but what about mostly flat terrain? The most effective way of doing this is using World brushes (brushes textured completely with your skybox texture) to block portal walls.
In this example I am using screens from my map mp_wesel to show you how I did it.
Because these World brushes are textured with the same sky texture as your skybox, you will not see a seam, edge or disturbance anywhere, unless you are at an elevation where you normally would be able to see terrain behind the World brush. This is why you place the World brush in the middle of a hedgerow or treelines.
Here are 2 curved hedgerows from mp_wesel.
Right now they do not block any vis and will not block portal walls because there is nothing there. To solve this, draw out some brushes inside the hedgerows & texture them completely (not just the faces) with your skybox texture. Texturing them completely with your skybox texture allows them to block portal walls, but also allows fire (grenades, bazookas, tank shells, etc..) to pass through. Make sure these World brushes go from the bottom of the skybox all the way to the top, no need to use a caulk brush underneath for them.
Same hedgerows with Worldbrushes inside.
Here is a screen of some World brushes & portals selected. I've labeled the World brushes for clarity.
Note: Not all World brushes & portals are selected, this is just to give you an idea of how to lay out your World brushes & portals.
