added new traversal template for two-level BVH traversal #9
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- added 'twoLevel::' namespace (and corresponding abstraction) to shrinking radius query. Twolevle traversal has addtl 'enterBlas()' and 'leaveBlas()' lambdas that can modify ray and bvh node ptr when reaching tlas leaves
twoLevel variants get additional enterBlas() and leaveBlas() lambdas so traversal can traverse two nested BVHes at the same time. - unified Triangle3f and triangle_t<>; former is now just triangle_t<float>. Same for TriangleIntersection and TriangleIntersection::compute() - various smaller clanups and warning fixes
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added (to rayQueries.h) new routines
and
In addition to the regular BVH traversals these variants have enterBlas() and leaveBlas() lambdas that allow the user to provide a transformed ray and blas BVH when toplevel BVH reaches a leaf. Managing transforms are the job ob the user, but these lambdas allow for doing so.