VOLUMEINFO

VOLUMEINFO_NONE	None.
VOLUMEINFO_REFLECTION	Calculates reflections.
VOLUMEINFO_TRANSPARENCY	Calculates transparency.
VOLUMEINFO_ALPHA	Calculates alpha.
VOLUMEINFO_CHANGENORMAL	Calculates bump mapping.
VOLUMEINFO_DISPLACEMENT	Calculates displacement mapping.
VOLUMEINFO_ENVREQUIRED	Needs environment reflection data.
VOLUMEINFO_DUDVREQUIRED	Needs du/dv bump mapping data.
VOLUMEINFO_MIPSAT	Requires MIP/SAT data.
VOLUMEINFO_VOLUMETRIC	Is volumetric.
VOLUMEINFO_TRANSFORM	Needs back-transformed data.
VOLUMEINFO_EVALUATEPROJECTION	Requires texture tag projections.
VOLUMEINFO_PRIVATE_GLOW	Calculates glow. Private.
VOLUMEINFO_INITCALCULATION	Needs InitCalculation() call.
VOLUMEINFO_FINAL_ALPHA	New in version R18: Writes final alpha value.