perf updates to parallel bvh4mn refit
added link to GitHub Issue Tracker
Merge branch 'master' of https://github.com/embree/embree
added zero_upper before each filter function call
updates to docu
cleanups/simplification for intersection filtering for single rays on MIC
Merge branch 'master' of https://github.com/embree/embree
cleanups/simplification for intersection filtering for single rays on MIC
perf improvements for motion blur on MIC
perf improvements for motion blur on MIC
minor updates
updates
added support for bvh4i.triangle8
updates
updates
test
Merge branch 'master' of https://github.com/embree/embree
Merge branch 'swoop'
Merge branch 'master' of https://github.com/embree/embree
updates: