cleanups
added BVH4TriangleBuilderFast with virtual create_primitive_array functions
cleanups
initializing memory to make fast builder fast again
first step to let trirefgen to work for bezier curves and user geometries too, cleanups in scene
trirefgen works for triangles, beziercurves, and user geometries
fixed problem with uninitialized variable
using atomic_extend to generate final priminfo
extensions to trirefgen
renamed triref to primref
renamed old primrefgen to primrefgen_old
renamed trirefgen to primrefgen
extensions to primrefgen
renaming size function of BuildSource to number_of_prims
more compact code in primrefgen
fixed assertion in triangle8.h
removed UserGeometryScene namespace
Merge branch 'devel' of https://github.com/embree/embree into devel