Fix regression in fallback renderer (fixes #583).
Fix regression in fallback renderer (fixes #583).

psteph801/psteph801.github.io,psteph801/psteph801.github.io,psteph801/psteph801.github.io,mpetroff/pannellum,psteph801/psteph801.github.io,mpetroff/pannellum,mpetroff/pannellum,mpetroff/pannellum