Set the bump/normal-map texture on mat. Uses a cotangent frame, so the mesh needs
no tangent attribute. Perturbation strength is controlled by mat.bumpLevel
(default 1.0). Registers the normal-map extension globally (idempotent). Call before
the scene is first built.
Set the bump/normal-map texture on
mat. Uses a cotangent frame, so the mesh needs no tangent attribute. Perturbation strength is controlled bymat.bumpLevel(default 1.0). Registers the normal-map extension globally (idempotent). Call before the scene is first built.