I don't know if this would work but it seems to work for directTV people.
Use that avertv hdmi input capture card. Hook the ps3 into that card and then use stereoscopic player to watch the capture card input and then select the appropriate settings sidebyside input and output to your dual video card passive projection. Seems like it will work maybe.
Also if you get an HDCP you might need to get a hdcp loopback driver or something in that regards.
2x Amd phenom ii x6 1055T
Asus Motherboard DDR3-16GB
Microsoft x6 keyboard - x5 mouse - vx 3000 webcam
Soundblaster Hs-1200 headset - 900mhz headset -voice buddy
3x 5.1 audio system, sony, yamaha, logitech
Acer H5360 3D-Ready Projector
2x 32 inch 60hz anaglyph1080p workstation monitor/tv/gaming
Nvidia 3D vision Kit
3x dlp link 3d glasses
Edimensional wireless glasses, 2x wired glasses
Nvidia Gtx 670 superclocked 4 GB
Nvidia Gts 450 ddr5 OC 810mhz 1024 GB Physx card
Ati 6450 1GB Workstation/Internet
Nvidia 7600gs 256mb
JVC - Digital SD Camcorder 800x zoom
x2 Amd htpc, Server, Playbook and netbook
Windows 8 x2waiting for autostereo cubed pixels displays