From bce73accede830f96b99985ec343c0fb7b4581b9 Mon Sep 17 00:00:00 2001
From: Dan McGarry <dan.mcgarry@gmail.com>
Date: Mon, 31 Jan 2022 17:22:21 -0800
Subject: [PATCH] Write Sparsely when exporting mesh orientation

Don't explicitly write mesh orientation attributes if they are set to
the default value (rightHanded)
---
 lib/mayaUsd/fileio/utils/meshWriteUtils.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/mayaUsd/fileio/utils/meshWriteUtils.cpp b/lib/mayaUsd/fileio/utils/meshWriteUtils.cpp
index 300541d712..69ec078021 100644
--- a/lib/mayaUsd/fileio/utils/meshWriteUtils.cpp
+++ b/lib/mayaUsd/fileio/utils/meshWriteUtils.cpp
@@ -834,7 +834,7 @@ void UsdMayaMeshWriteUtils::writeFaceVertexIndicesData(
     bool isLeftHanded = false;
     UsdMayaUtil::getPlugValue(meshFn, "opposite", &isLeftHanded);
     primSchema.CreateOrientationAttr(
-        VtValue(isLeftHanded ? UsdGeomTokens->leftHanded : UsdGeomTokens->rightHanded));
+        VtValue(isLeftHanded ? UsdGeomTokens->leftHanded : UsdGeomTokens->rightHanded), true);
 }
 
 void UsdMayaMeshWriteUtils::writeInvisibleFacesData(