[Bf-blender-cvs] [354c663] temp-tangent-refactor: Only create the tessface layer if it does not exist.

[Antony Riakiotakis]

Commit: 354c663f66d151d75bda9d082a2303935172c57d
Author: Antony Riakiotakis
Date:   Mon Jul 27 16:32:37 2015 +0200
Branches: temp-tangent-refactor
https://developer.blender.org/rB354c663f66d151d75bda9d082a2303935172c57d

Only create the tessface layer if it does not exist.

===================================================================

M	source/gameengine/Converter/BL_BlenderDataConversion.cpp

===================================================================

diff --git a/source/gameengine/Converter/BL_BlenderDataConversion.cpp b/source/gameengine/Converter/BL_BlenderDataConversion.cpp
index 7031a80..b6bf960 100644
--- a/source/gameengine/Converter/BL_BlenderDataConversion.cpp
+++ b/source/gameengine/Converter/BL_BlenderDataConversion.cpp
@@ -961,12 +961,14 @@ RAS_MeshObject* BL_ConvertMesh(Mesh* mesh, Object* blenderobj, KX_Scene* scene,
 
 	/* needs to be rewritten for loopdata */
 	if (tface) {
-		bool generate_data = false;
-		if (CustomData_get_layer_index(&dm->loopData, CD_TANGENT) == -1) {
-			DM_add_tangent_layer(dm);
-			generate_data = true;
+		if (CustomData_get_layer_index(&dm->faceData, CD_TANGENT) == -1) {
+			bool generate_data = false;
+			if (CustomData_get_layer_index(&dm->loopData, CD_TANGENT) == -1) {
+				DM_add_tangent_layer(dm);
+				generate_data = true;
+			}
+			DM_generate_tangent_tessface_data(dm, generate_data);
 		}
-		DM_generate_tangent_tessface_data(dm, generate_data);
 		tangent = (float(*)[4])dm->getTessFaceDataArray(dm, CD_TANGENT);
 	}