public void Render (DrawBatch drawBatch, CCTexture2D defaultTexture)
 {
     //device.Textures[0] = _texture ?? defaultTexture;
     //device.DrawUserIndexedPrimitives(PrimitiveType.TriangleList, _vertexBuffer, 0, _vertexBuffer.Length, _indexBuffer, 0, _indexBuffer.Length / 3);
     drawBatch.RenderBatch(PrimitiveType.TriangleList,
         0, _indexBuffer.Length, _indexBuffer,
         0, _vertexBuffer.Length, _vertexBuffer,
         _texture ?? defaultTexture);
 }