A method, system, and computer program product are provided for accelerated shading of
an object surface by bump mapping in tangent space or object space. A tangent space
transform module builds a tangent space transform matrix M (p) having elements comprised
of normal, tangent, and binormal vector components determined at a surface point on the
object surface. The tangent space transform module further transforms shading vectors, such
as, lighting and viewing vectors, into a tangent space defined by the tangent space transform …

[57] ABSTRACT A method, system, and computer program product are provided for
accelerated shading of an object surface by bump mapping in tangent space or object
space. A tangent space transform module builds a tangent space transform matrix M (p)
having elements comprised of normal, tangent, and binormal vector components determined
at a surface point on the object surface. The tangent space transform module further
transforms shading vectors, such as, lighting and vieWing vectors, into a tangent space de …