Improved blur3d.api.SoftimageViewport class so it handles better the access to the native viewport.
Improved blur3d.api.SoftimageViewport class so it handles better the access to the native viewport.

git-svn-id: a3b746cc1383a42926249ed33eaccad697259b1b@17795 896c8824-d3f5-0310-9c61-ac502b9a79dc

blurstudio/cross3d