BSP flags (Source)
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This is a draft page. It is a work in progress open to editing by anyone.
Remember to check for any notes left by the tagger at this article's talk page.
Remember to check for any notes left by the tagger at this article's talk page.
public/bspflags.h defines bitfields used to tell the game engine and compiler how a brush face should be drawn in-game (surface flags), and what should be inside the brush (contents flags).
These are normally defined via Material map compile flags, but they can also be applied directly into a VMF's brush face, using "contents" "####" for contents flags and "flags" "####" for surface flags. Some values are also defined via other means, such as func_detail for CONTENTS_DETAIL.
Important:
Hammer 4.x strips these values! Put applicable geometry in an instance to avoid issues.
Confirm:
Hammer++ might keep the values.