BSP (Source)/Static prop flags
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These flags are defined in 
public/gamebspfile.h. Any undefined flags are unused by the engine and can be used by custom VRAD compilers to define additional light baking parameters (in conjunction with a modified VBSP that can write those flags).
Flags
This is 8-bit (unsigned char) in all versions of the static prop lump except for 
, where it is 32-bit (signed int).
| Bit | Name | Dev comment | Description |
|---|---|---|---|
| 0x01 | STATIC_PROP_FLAG_FADES | none | Set by engine at runtime if the model fades out at a distance. |
| 0x02 | STATIC_PROP_USE_LIGHTING_ORIGIN | none | Set by engine at runtime if the model's lighting origin is different from its position in the world. |
| 0x04 | STATIC_PROP_NO_DRAW (in all games since  )(removed since  )
|
computed at run time based on dx level | Set by engine at runtime based upon mindxlevel and maxdxlevel. Does not work if set explicitly; set maxdxlevel to a low non-zero value such as 50 instead.
|
| STATIC_PROP_NO_FLASHLIGHT (in all games since )[confirm]
|
N/A (source code not public) | Set if disableflashlight is enabled.
| |
| 0x08 | STATIC_PROP_IGNORE_NORMALS (in all games since )
|
none | Set if ignorenormals is enabled.
|
| 0x10 | STATIC_PROP_NO_SHADOW | none | Set if disableshadows is enabled.
|
| 0x20 | STATIC_PROP_SCREEN_SPACE_FADE (removed since )
|
none | Set if screenspacefade is enabled.
|
| STATIC_PROP_MARKED_FOR_FAST_REFLECTION (in all games since )
|
N/A (source code not public) | Set if drawinfastreflection is enabled.
| |
| 0x40 | STATIC_PROP_NO_PER_VERTEX_LIGHTING (in all games since  )
|
in vrad, compute lighting at lighting origin, not for each vertex | Set if disablevertexlighting is enabled.Contrary to the dev comment, this disables pre-baked lighting for the model altogether, making it lit the same way as CBaseAnimating props (ex: prop_dynamic). |
| 0x80 | STATIC_PROP_NO_SELF_SHADOWING (in all games since )
|
disable self shadowing in vrad | Set if disableselfshadowing is enabled.
|
| 0x100 | STATIC_PROP_NO_PER_TEXEL_LIGHTING (in all games since )(also in  )
|
whether we should do per-texel lightmaps in vrad. | Set if generatelightmaps is disabled.If VRAD is fed an older version of the static prop lump with 8-bit flags, this flag is treated as always being enabled (not generating lightmaps for any props). This flag is only read by VRAD; the engine will load the the PPL file associated with a given prop regardless of this flag, provided STATIC_PROP_NO_PER_VERTEX_LIGHTING is disabled and the checksum in the PPL file matches the checksum found in specified MDL. |
| 0x200 | STATIC_PROP_ENABLE_LIGHT_BOUNCE (only in )
|
N/A (source code not public) | Set if enablelightbounce is enabled.
|
FlagsEX
Counter-Strike: Global Offensive's static prop lump adds an extra 32-bit (signed int) set of flags, most of which are unused.
| Bit | Name | Description |
|---|---|---|
| 0x00000001 | STATIC_PROP_FLAGS_EX_DISABLE_SHADOW_DEPTH | Set if disableshadowdepth is enabled.
|
| 0x00000002 | STATIC_PROP_FLAGS_EX_DISABLE_CSM | Automatically set at runtime |
| 0x00000004 | STATIC_PROP_FLAGS_EX_ENABLE_LIGHT_BOUNCE | Set if enablelightbounce is enabled.
|