How is embree passing aligned function arguments and still does work?

[Emil_K_]

I noticed in the file heuristic_binning.h, there's a type PrimInfo, whose c'tor accepts BBox3f by value, this will invoke a copy c'tor, but BBox3f has alignment inherited via Vec3f<float>. This shoud trigger and error with the MS compiler (error C2719), but it actully does not. Anyone care to explain why? Disabled somehow?

[SvenW_Intel]

Using the MS compiler values passed by value will not be properly aligned. As a workaround one has to pass all values by reference that need alignment. I fixed that bug in the git repository of Embree, check it out here embree.github.com