SHADERINFO_TRANSFORM Channel needs back-transformed data. (Required for BaseVolumeData.back_p.)
SHADERINFO_BUMP_SUPPORT Channel shader supports bump. This is strongly recommended for all shaders except simple 2D (UV) samplers.
SHADERINFO_ALPHA_SUPPORT Channel shader supports alpha output.
SHADERINFO_REFLECTIONS Channel shader computes reflections.
SHADERINFO_DUDVREQUIRED Channel shader needs du/dv bump mapping data. See BaseVolumeData.ddu and BaseVolumeData.ddv.
SHADERINFO_DYNAMICSUBSHADERS Channel shader has a dynamic list of sub-shaders in its description.