diff --git a/src/common/ml_document/mesh_model.cpp b/src/common/ml_document/mesh_model.cpp
index 6c80d2212..a9f1980aa 100644
--- a/src/common/ml_document/mesh_model.cpp
+++ b/src/common/ml_document/mesh_model.cpp
@@ -236,6 +236,36 @@ bool MeshModel::hasDataMask(const int maskToBeTested) const
 	return ((currentDataMask & maskToBeTested)!= 0);
 }
 
+bool MeshModel::hasPerVertexColor() const
+{
+	return currentDataMask & MM_VERTCOLOR;
+}
+
+bool MeshModel::hasPerVertexQuality() const
+{
+	return currentDataMask & MM_VERTQUALITY;
+}
+
+bool MeshModel::hasPerVertexTexCoord() const
+{
+	return currentDataMask & MM_VERTTEXCOORD;
+}
+
+bool MeshModel::hasPerFaceColor() const
+{
+	return currentDataMask & MM_FACECOLOR;
+}
+
+bool MeshModel::hasPerFaceQuality() const
+{
+	return currentDataMask & MM_FACEQUALITY;
+}
+
+bool MeshModel::hasPerFaceWedgeTexCoords() const
+{
+	return currentDataMask & MM_WEDGTEXCOORD;
+}
+
 void MeshModel::updateDataMask()
 {
 	currentDataMask = MM_NONE;
diff --git a/src/common/ml_document/mesh_model.h b/src/common/ml_document/mesh_model.h
index 3f9cace1c..5f2baaabe 100644
--- a/src/common/ml_document/mesh_model.h
+++ b/src/common/ml_document/mesh_model.h
@@ -81,7 +81,7 @@ public:
 		MM_VERTQUALITY    = 0x00000010,
 		MM_VERTMARK       = 0x00000020,
 		MM_VERTFACETOPO   = 0x00000040,
-		MM_VERTCURV	      = 0x00000080,
+		MM_VERTCURV       = 0x00000080,
 		MM_VERTCURVDIR    = 0x00000100,
 		MM_VERTRADIUS     = 0x00000200,
 		MM_VERTTEXCOORD   = 0x00000400,
@@ -182,6 +182,14 @@ public:
 	void enable(int openingFileMask);
 
 	bool hasDataMask(const int maskToBeTested) const;
+
+	bool hasPerVertexColor() const;
+	bool hasPerVertexQuality() const;
+	bool hasPerVertexTexCoord() const;
+	bool hasPerFaceColor() const;
+	bool hasPerFaceQuality() const;
+	bool hasPerFaceWedgeTexCoords() const;
+
 	void updateDataMask();
 	void updateDataMask(const MeshModel* m);
 	void updateDataMask(int neededDataMask);