三维地图使用AGSMultilayerPolylineSymbol绘制纹理线条时崩溃

在三维地图上使用AGSMultilayerPolylineSymbol绘制纹理线条时,多画几条会内存不断上升,直到崩溃,二维地图就不会
 if (!_simpleLineSymbol) {

        AGSSolidStrokeSymbolLayer *bubu = [[AGSSolidStrokeSymbolLayer alloc] initWithWidth:1 color:UIColor.redColor];
       AGSMultilayerPointSymbol *symbol = [[AGSMultilayerPointSymbol alloc] initWithSymbolLayers:@[bubu]];
        AGSPolylineBuilder *polyy = [[AGSPolylineBuilder alloc] initWithPoints:@[AGSPointMake(0, 0, nil),AGSPointMake(0, 10, nil),AGSPointMake(10, 10, nil),AGSPointMake(10, 0, nil)]];
        AGSVectorMarkerSymbolElement *ele =  [[AGSVectorMarkerSymbolElement alloc] initWithGeometry:[polyy toGeometry] multilayerSymbol:symbol];
        AGSSolidStrokeSymbolLayer *nono = [[AGSSolidStrokeSymbolLayer alloc] initWithWidth:1 color:UIColor.blueColor];
        AGSMultilayerPointSymbol *symbol1 = [[AGSMultilayerPointSymbol alloc] initWithSymbolLayers:@[nono]];
        AGSPolylineBuilder *polyy1 = [[AGSPolylineBuilder alloc] initWithPoints:@[AGSPointMake(0, 0, nil),AGSPointMake(0, 5, nil),AGSPointMake(5, 5, nil),AGSPointMake(5, 0, nil)]];
        AGSVectorMarkerSymbolElement *ele1 =  [[AGSVectorMarkerSymbolElement alloc] initWithGeometry:[polyy1 toGeometry] multilayerSymbol:symbol1];       
        AGSVectorMarkerSymbolLayer *sync = [[AGSVectorMarkerSymbolLayer alloc] initWithVectorMarkerSymbolElements:@[ele,ele1]];
        AGSMultilayerPolylineSymbol *hatchLineSymbol = [[AGSMultilayerPolylineSymbol alloc] initWithSymbolLayers:@[sync]];
        hatchLineSymbol.width = 10;
        _simpleLineSymbol = hatchLineSymbol;
    }
    return _simpleLineSymbol;

  
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