WAL: Difference between revisions
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'''WAL''' is a [[texture]] file format used by {{quake2|4.1}} to store [[brush]] textures. A single WAL file contains one [[miptex]], as well as three metadata values. The first two metadata values are [[bitflag]]s, indicating information about a brush's face (surface flags) and a brush's contents (content flags). The third metadata value is an integer value, | '''WAL''' is a [[texture]] file format used by {{quake2|4.1}} to store [[brush]] textures. A single WAL file contains one [[miptex]], as well as three metadata values. The first two metadata values are [[bitflag]]s, indicating information about a brush's face (surface flags) and a brush's contents (content flags). The third metadata value is an integer value, traditionally used for determining the brightness of [[texlight]]s (although some compilers use it for other purposes on non-emissive surfaces, such as for smoothing groups in [[RAD|Arghrad]]). | ||
The surface flags and content flags found in WAL files would serve the basis for the [[material map compile flags]] used by {{source|4.1|nt=0}}. | The surface flags and content flags found in WAL files would serve the basis for the [[material map compile flags]] used by {{source|4.1|nt=0}}. | ||
== Texture flags == | |||
These sections list and describe the various standard surface and content flags used in {{Quake2|4.1}}, as well as the equivalent [[VMT]] parameters to achieve the same result in {{src|4.1|nt=0}}. | |||
=== Surface flags === | |||
Surface flags on different faces of a brush generally do not need to match. | |||
=== Content flags === | |||
Content flags on different faces of a brush ''almost always need to match''. Mismatched contents will result in compiler errors, and leaves it up to the compiler to decide what contents a brush should have. | |||
The exception to this rule is the "current" flags. | |||
Revision as of 07:56, 30 August 2023
WAL is a texture file format used by 
Quake II to store brush textures. A single WAL file contains one miptex, as well as three metadata values. The first two metadata values are bitflags, indicating information about a brush's face (surface flags) and a brush's contents (content flags). The third metadata value is an integer value, traditionally used for determining the brightness of texlights (although some compilers use it for other purposes on non-emissive surfaces, such as for smoothing groups in Arghrad).
The surface flags and content flags found in WAL files would serve the basis for the material map compile flags used by 
Source 1.
Texture flags
These sections list and describe the various standard surface and content flags used in Quake II, as well as the equivalent VMT parameters to achieve the same result in Source 1.
Surface flags
Surface flags on different faces of a brush generally do not need to match.
Content flags
Content flags on different faces of a brush almost always need to match. Mismatched contents will result in compiler errors, and leaves it up to the compiler to decide what contents a brush should have. The exception to this rule is the "current" flags.