Joseph Eagar
010c10febe
PBVH_FACES and PBVH_GRIDS do not store faces directly in nodes; instead they store 'primitives', which are tesselation triangles for PBVH_FACES and grids (which are per-loop) for PBVH_GRIDS. Primitives from the same face could sometimes end up in different PBVH nodes. This is now prevented in two ways: * All primitives of the same face are given the same boundary during PBVH build. This prevents them from being swapped away from each other during partitioning. * build_sub adjusts the final partition midpoint to fall between primitives of different faces.