xref object или vrayproxy ? вот в чем вопрос!
и в потверждение цитата из Complete Guide
"Instead of inserting the 3D models of the trees inside the .max
file, it positions some substitutive geometries. Proxies. One may think to these objects as "placeholders" which, when
necessary, are replaced by the geometries they are substituting. Since they are simply "markers", the .max file does not
weigh much. The appearance of Proxies and the reason for their existence is memory saving. Often 3ds Max crashes
because of a saturation of the RAM. This happens because, when one clicks on the "Render" button, 3ds Max sends all
the geometries directly to the memory. In case the RAM runs out, 3ds Max does not know where to put the data sent,
and it seizes up. Instead, by using the Proxy, the situation radically changes. In this case the external files, the Proxies.
are loaded on memory only when they are rendered. After being rendered and computed, the memory is deleted thus
leaving the space for new information. This allows one to obtain many benefits, most of all for heavy files, such as
complicated geometries to be rendered. For small scenes these benefits are undetectable, since the RAM is itself enough
for the render. The use of the Proxy might even be negative, because a process of loading-unloading of memory might
occur, leading to an increase of the rendering time. Obviously, if the system is powerful enough, it is preferable to
verify if 3ds Max is able to render the scene without using the Proxies. Loading and unloading the RAM continuously
generates a process which requires time. Surely the best solution is to load the scene all together in the memory. In case
the polygons are loo numerous, the only way for achieving the job is to use the Proxy. In order with what has been said
up to now one might think the VRayProxy is the definitive solution for memory problems due to a high number of
polygons. Unfortunately its has its faults as well, at least in the v/,5 RC3 release. Another problem might arise,
concerning the possible similarity between the VRayProxy and the XRef. In 3ds Max an XRef elemenl is an external
reference file. A scene might contain many XRef referring to other objects or other scenes. Xto/'objects allow several
animators or modellers to operate simultaneously on a scene without interfering with each other's job. Unfortunately, at
the moment of the rendering, the XRef are always completely loaded on memory. Therefore, the reason of the
introduction of the VRayProxy is clear. "
