Tangent
The geometric tangent of the currently-processed data in a given coordinate space.
Parameter Types
Parameter descriptions
SpaceThe space in which the shader defines the bitangent vector; the default is
object.IndexThe index of the texture coordinates that the node computes the tangent against; the default is
0.
Discussion
Valid values for the Space parameter include the following:
model: The local coordinate space before the shader applies any local deformations or global transforms to the geometry.object: The local coordinate space after the shader applies local deformations but before it applies global transforms to the geometry.world: The global coordinate space after the shader applies both local deformations and global transforms to the geometry.