Rending glitch on Ghost in the Shell Standalone Complex

Hello all. Last week I finished Ghost in the Shell Standalone Complex usingt he PS3's PS2 emulator. The whole game was a flawly emulation until the end boss where the polygons seem to be connected to somewhere in the sky (please see picture attached) I have a feeling Ive seen this sort of glitch before in other games. Does anyone know what would cause it? Im very curious