.NET Reporting Services是否支持矢量图形？

After diving into the www, I don't have a clue about the support of vectorial grahics/image by reporting services. It seems to be impossible. We are using Reporting Services with a PDF rendering and we are forced to use raw bitmap into reports. That leads to huge sized reports. We know that dealing with vectorial graphics will help but such feature seems to be not supported by reporting services.After diving into the www, I don't have a clue