What are these files?

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we've all had better times to die
Feb 10, 2017
I have had extreme trouble with getting any non tf2-base textures to actually get packed into my map, but when trying again with VIDE, i saw it already had a (texturename)vvt_patch.vmt in the bsp already. What are these? are they like the normal texture or what?


L4: Comfortable Member
Aug 12, 2016
I think vvt_patches are textures that tell a displacement how a blend texture is blended
they should be in the first few lines of vbsp's output in your compile logs
vbsp.exe packs them by default


The "raw" in "nodraw"
Jun 1, 2009
so, a lot of materials are created at compile time and only exist inside your bsp. There's a few instances where this happens, but you never have to worry about packing them because they are added at compile by vbsp.exe. I believe blend materials and water materials are the main causes.

in this case, read up on the patch shader https://developer.valvesoftware.com/wiki/Patch
Vbsp creates patch materials which it relies on instead of simply using a material directly, it essentially exists to override properties of existing materials when vbsp judges it's necessary to do so.