private void DrawSelectedBrushMask()
 {
     if (data.brushMask == null)
     {
         EditorGUILayout.HelpBox("没有笔刷!", MessageType.Info);
     }
     else
     {
         EditorGUILayout.BeginVertical("box");
         if (GUILayout.Button(new GUIContent(data.brushMask), GUILayout.Width(64), GUILayout.Height(64), GUILayout.ExpandWidth(true)))
         {
             GrassAssetWindow.ShowGrassAssetWindow();
         }
         GUILayout.Height(10);
         EditorGUILayout.LabelField(data.brushMask.name);
         EditorGUILayout.EndVertical();
     }
 }
 public static void ShowGrassAssetWindow()
 {
     instance = (GrassAssetWindow)EditorWindow.GetWindow(typeof(GrassAssetWindow));
     instance.titleContent = new GUIContent("GrassEditorAsset");
     instance.Show();
 }