diff --git a/AssetStudioUtility/SpriteHelper.cs b/AssetStudioUtility/SpriteHelper.cs
index ab3795c..acb35e1 100644
--- a/AssetStudioUtility/SpriteHelper.cs
+++ b/AssetStudioUtility/SpriteHelper.cs
@@ -130,20 +130,24 @@ namespace AssetStudio
                     {
                         try
                         {
-                            var triangles = GetTriangles(m_Sprite.m_RD);
-                            var polygons = triangles.Select(x => new Polygon(new LinearLineSegment(x.Select(y => new PointF(y.X, y.Y)).ToArray()))).ToArray();
-                            IPathCollection path = new PathCollection(polygons);
                             var matrix = Matrix3x2.CreateScale(m_Sprite.m_PixelsToUnits);
                             matrix *= Matrix3x2.CreateTranslation(m_Sprite.m_Rect.width * m_Sprite.m_Pivot.X - textureRectOffset.X, m_Sprite.m_Rect.height * m_Sprite.m_Pivot.Y - textureRectOffset.Y);
-                            path = path.Transform(matrix);
-                            var graphicsOptions = new GraphicsOptions
+                            var triangles = GetTriangles(m_Sprite.m_RD);
+                            var points = triangles.Select(x => x.Select(y => new PointF(y.X, y.Y)).ToArray());
+                            var pathBuilder = new PathBuilder(matrix);
+                            foreach (var p in points)
                             {
-                                Antialias = false,
-                                AlphaCompositionMode = PixelAlphaCompositionMode.DestOut
-                            };
+                                pathBuilder.AddLines(p);
+                                pathBuilder.CloseFigure();
+                            }
+                            var path = pathBuilder.Build();
                             var options = new DrawingOptions
                             {
-                                GraphicsOptions = graphicsOptions
+                                GraphicsOptions = new GraphicsOptions
+                                {
+                                    Antialias = false,
+                                    AlphaCompositionMode = PixelAlphaCompositionMode.DestOut
+                                }
                             };
                             using (var mask = new Image<Bgra32>(rect.Width, rect.Height, SixLabors.ImageSharp.Color.Black))
                             {