Somehow this untested implementation made it in, I thought I had tested this. The mistake I made was imagining the VBOs were "indexed" using the node vertex indices, but we use a flat duplicate-per-triangle vertex VBO format.
Somehow this untested implementation made it in, I thought I had tested this. The mistake I made was imagining the VBOs were "indexed" using the node vertex indices, but we use a flat duplicate-per-triangle vertex VBO format.