Gprt vol tracing#205

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Waqar-ukaea wants to merge 17 commits intoxdg-org:mainfrom

Waqar-ukaea:GPRT-vol-tracing

Commits on Mar 19, 2026

Implemented MeshManager level versions of get_surface_vertices() + get_surface_connectivity()
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Refactored get_volume_vertices() and get_volume_connectivity() to be abstracted to MeshManager level
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Some more cleanup
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Refactored tests for MOABMeshManager::get_surface_connectivity() and get_volume_connectivity()
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Added method to return dense array of a volume's connectivity indices
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Started on implementing volumetric element tree BVH construction in GPRT
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Restructured slang shaders in preparation for new tet shaders
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Added the required shaders for find_element on GPU
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Added rest of plumbing to make find_element work with GPRT and 1 ray
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Extended find_element test to also test with GPRT backend
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Added a new slang __generic that populates AABBs for objects of arbitrary numbers of vertices
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Changed a constant to be static const to be slang compliant
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Made plucker_tet_containment code cross-compatible between C++ and slang
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Switch to pre-allocate arrays in BVH construction rather than relying on push_back
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Rebased to latest main
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Commits on Apr 10, 2026

Addressed comments and created new shared_constants.h header
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Commits on Apr 13, 2026

Reverted change to constants
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