Set the specular texture on mat. Replaces mat.specularColor, and its alpha
channel modulates glossiness. Reads mat.specularCoordIndex to select UV1 (0) or
UV2 (1). Registers the specular extension globally (idempotent). Call before the
scene is first built.
Set the specular texture on
mat. Replacesmat.specularColor, and its alpha channel modulates glossiness. Readsmat.specularCoordIndexto select UV1 (0) or UV2 (1). Registers the specular extension globally (idempotent). Call before the scene is first built.