5b5811c97b
Previous code was rebuilding "name to material" map for each object being imported. Which means O(N*M) complexity (N=object count, M=material count). There was already a TODO comment suggesting that a single map that's maintained for the whole import would be enough. This commit does exactly that. While importing Moana USD scene (260k objects, 18k materials) this saves about 6 minutes of import time. Reviewed By: Bastien Montagne Differential Revision: https://developer.blender.org/D15222