diff --git a/spine-tk2d/Code/tk2dSpineSkeleton.cs b/spine-tk2d/Code/tk2dSpineSkeleton.cs
index 82983b5a9..823d3eccd 100644
--- a/spine-tk2d/Code/tk2dSpineSkeleton.cs
+++ b/spine-tk2d/Code/tk2dSpineSkeleton.cs
@@ -131,11 +131,24 @@ public class tk2dSpineSkeleton : MonoBehaviour, tk2dRuntime.ISpriteCollectionFor
 			}
 		}
 		
+		mesh.Clear();
+		
 		mesh.vertices = vertices;
 		mesh.colors = colors;
 		mesh.uv = uvs;
 		mesh.triangles = triangles;
-		mesh.RecalculateNormals();
+		
+		if (skeletonDataAsset.sprites.normalGenerationMode != tk2dSpriteCollection.NormalGenerationMode.None) {
+			mesh.RecalculateNormals();
+
+			if (skeletonDataAsset.sprites.normalGenerationMode == tk2dSpriteCollection.NormalGenerationMode.NormalsAndTangents) {
+				Vector4[] tangents = new Vector4[mesh.normals.Length];
+				for (int t = 0; t < tangents.Length; ++t) {
+					tangents[t] = new Vector4(1, 0, 0, 1);
+				}
+				mesh.tangents = tangents;
+			}
+		}
 		
 		renderer.sharedMaterial = skeletonDataAsset.sprites.spriteCollection.inst.materials[0];
 	}