LayerManager: Prevent unintended overwriting of unmodified USD layers.

Autodesk · Dec 3, 2024 · 4c75bee · 4c75bee
1 parent 8883de1
commit 4c75bee
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/lib/mayaUsd/nodes/layerManager.cpp b/lib/mayaUsd/nodes/layerManager.cpp
@@ -1022,7 +1022,8 @@ BatchSaveResult LayerDatabase::saveUsdToUsdFiles()
                 const auto& allLayers = info.stage->GetUsedLayers(true);
                 for (auto layer : allLayers) {
                     if (TF_VERIFY(layer)) {
-                        if (layer != sessionLayer && layer->PermissionToSave()) {
+                        if (layer != sessionLayer && layer->PermissionToSave()
+                            && layer->IsDirty()) {
                             if (!MayaUsd::utils::saveLayerWithFormat(layer)) {
                                 MString errMsg;
                                 MString layerName(layer->GetDisplayName().c_str());