Results

• traversal with rope trees is always faster than recursive traversal
• the speedup varies from 1% to 8%
• remarkable for large meshes with specular surfaces (exploitation of coherence between primary and secondary rays)

Drawback

• memory requirements - eight times more than common BSP tree
• crucial for complex (not necessarily large) scenes - the BSP needs more space subdivisions

Recommendation

• use rope trees as long as the memory requirements don't exceed the physical memory of the computer