id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
936	prevent MaterialList from rendering light tangents when no normal map in use	ArcRiley		"The current code calculates per-vertex light tangents each frame, regardless of whether a normals map is in use.  To fix this, generate only if _hasBumps > 0, and modify this value:

  * increase whenever a Material is added to MaterialList which contains a normals texture
  * increase each MaterialList using a Material when the normals texture is added
  * decrease each MaterialList using a Material when the normals texture is removed
  * decrease whenever a Material containing a normals texture is removed from a MaterialList

Note that materials are added to MaterialList when a face using them is added to a mesh and removed when the last face using that material is removed from a mesh.  Or, it should."	defect	closed	High	beta3	soy._datatypes	Trunk	invalid