UfbxImporter: Add comment about weight sorting

mosra · Feb 7, 2023 · f2fae90 · f2fae90
1 parent b549031
commit f2fae90
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/src/MagnumPlugins/UfbxImporter/UfbxImporter.cpp b/src/MagnumPlugins/UfbxImporter/UfbxImporter.cpp
@@ -1039,6 +1039,8 @@ Containers::Optional<MeshData> UfbxImporter::doMesh(UnsignedInt id, UnsignedInt
                 UnsignedInt weightCount = Utility::min(vertex.num_weights, jointWeightCount);
                 Float totalWeight = 0.0f;
 
+                /* We can simply take the first N weights from the skin as they
+                   are sorted in descending order by ufbx. */
                 for(UnsignedInt j = 0; j < weightCount; ++j) {
                     ufbx_skin_weight weight = skin->weights[vertex.weight_begin + j];
                     jointIds[dstIx][j] = weight.cluster_index;