| Author | Message | ||
     clydd (Clyde) New member Username: Clyde Post Number: 1 Registered: 4-2006 Rating: |
Ok.. I have everything "sorted out" ..but so far its been in my head only. Time to do a practical test. Tell me what I am missing in the following? 1) Passive 3D game projection setup: I will use a shuttle PC Win XP pro and latest Nvidia card ...with dual output (one dvi and one vga, but the Dvi socket will carry a vga adapter). my question is: Will games playback at full fps when you choose nvidia dual output stereo 3d? and all that is needed is to connect the two outputs to a passive projector setup? 2) Using ANY good hi-gain backprojection screen will enable me to do away with needing a silver screen? 3) Assuming normal ambient light, but using dlp projectors of 5000 lumens each.. will this be adequate to run this setup in a typical normal room light situation? (this will amount to approx 10,000 lumenes but be cut in half or 60% by the linear polarization) true? Thanks and regards Clyde | ||
| clydd (Clyde) New member Username: Clyde Post Number: 2 Registered: 4-2006 Rating: |
..self voting is cool  | ||
| Michal Husak (Husakm) New member Username: Husakm Post Number: 6 Registered: 4-2006 Rating: |
Hi CLyde: 1) Most modern game will not work at all = the advanced pixel shaders is non-functional with nVidia wrapers. In stereo mode the FPS will fall to 1/2 to normal palyabck mode FPS ... 2) NO ! Only a few back projection screen materials are non-deopoarizing ... We had tested e.g. 5 diferent mateilas, none of them was working. Insteaf of expensive silver screen you must again buy from Stewart a special non-depolarazing back projection material. You have a bit bigger chance with solid back projection desks ... 3) Your nubers tell nothing if you do not give screen size on witch you want to make the projection, the screen gain, the type of projector you use, the method of light polarization ... All this factors should be put in a matematicla model of your projection system to get the answer .... | ||
| clydd (Clyde) New member Username: Clyde Post Number: 3 Registered: 4-2006 Rating: N/A |
Hi Michal, Thanks for the nice reply. So I guess the only way is to use Nvidi Interlace mode and then use a hardware demultiplexer to give out two vga or composite video streams? Do you know of any reasonably priced hardware to do this? - This means that till today there isnt anyone using a passive 3D setup for gaming? 2) So I guess its a front projection silver screen setup only then  (was trying hard to avoid getting into active stereo setup as this is cost prohibitive to manage) Looking to a reply, Clyde | ||
| clydd (Clyde) New member Username: Clyde Post Number: 4 Registered: 4-2006 Rating: N/A |
yup there is a cost effective way i guess ...but too much trouble. ie. use a second PC with stereoscopic player, feed it an interlaced live video feed (from the previous pc) and then output the interlaced feed as dual screen out. ...but this is cumversome  hope theres a cheap demultiplexer around Regards | ||
| John Miller (Dep3d) New member Username: Dep3d Post Number: 1 Registered: 4-2006 Rating: N/A |
dual output works fine for gaming you can contact me directly to discuss john@dep3d.com | ||
| Michal Husak (Husakm) New member Username: Husakm Post Number: 7 Registered: 4-2006 Rating: N/A |
clyde: If the wrapers can not create dual output, they can not create interlaced output as well. So it work as you describe (no demultiplexor neccesary, dual output), or it does not work at all ... You must simply chose games (probably not the latest) witch works O.K. ... According point 2) - try some hard (desk) rear projection materials. They often work as I had mentioned. But you should test them ... | ||
| clydd (Clyde) New member Username: Clyde Post Number: 5 Registered: 4-2006 Rating: N/A |
Thanks for replies Michal and John, I was reading other boards and find that the latest Nvidia 7800 series etc will give decent fps of about 25-30 fps which to my understanding is what smooth motion should be (I still dont understand why 60 fps is considered great in the gaming world) Michal .. can you give me an example of a good "desk rear projection material" I didnt quite understand what desk material is. Regards. | ||
| Michal Husak (Husakm) New member Username: Husakm Post Number: 8 Registered: 4-2006 Rating: N/A |
clydd: For rear projection you can use 2 sorts of materilas: 1) flexible plastic foils witch need to be put in a frame. For transportation purpose they can be roled .... 2) rigid desks, simply big desk made from a special plastic. Meterial mentioned in 2 often works O.K. for 3D nad it is non depolarizing. The disadvantage are problems during transportation - the desk is rigid. We have a supply of such material working O.K. with polrized prjection (2 versions: gain 2 and another material with gain 1.3 with enhanced contrast) ... Eventual supply will require transportation from Czech Republic ... | ||
| clydd (Clyde) New member Username: Clyde Post Number: 6 Registered: 4-2006 Rating: N/A |
Ok thanks Michal, Im assuming we cant get the flexible plastic foils in the local market? If so then can you send me via email a price for the flexible material for screen size of 9 feet x 6 feet Many Thanks. Clyde (clyde@3dco.com) | ||
| Michal Husak (Husakm) New member Username: Husakm Post Number: 10 Registered: 4-2006 Rating: N/A |
clydd: flexible plastic foil from local market will not work for sure :-(. We do not have availabe flexible non-dpeolarizing foil at all - the only one company in the world having this material availabe is Stewart (be preapred for horribel high price) ... We have availabe only non-fexible rigid desks made from non-deopalrizing material ... | ||
| John Miller (Dep3d) New member Username: Dep3d Post Number: 2 Registered: 4-2006 Rating: N/A |
clyde, stereo 3d is my business and believe I can easily answer your questions I work directly with nvidia and many screen/projector vendors and have proven solutions it is for the benefit of both of our interests not to discuss it in this public forum where is your company? | ||
| Ron Martens (Equo) New member Username: Equo Post Number: 1 Registered: 10-2006 Rating: N/A |
Michal, Can you tell me where I can find "Stewart"? I am looking for this foil but cannot find a producer/supplier in Holland. Thanks, Ron | ||
| Maarten van Grinsven (Maart) New member Username: Maart Post Number: 5 Registered: 4-2006 Rating: N/A |
I'm locatd in the netherlands, drop me an email @ info@visionair3d.com | ||
| Michal Husak (Husakm) Member Username: Husakm Post Number: 54 Registered: 4-2006  Rating: N/A |
Ron: http://www.stewartfilmscreen.com/ I do not know about redistributor in your country ... | ||
| Ron Martens (Equo) New member Username: Equo Post Number: 2 Registered: 10-2006 Rating: N/A |
Thanks, Will check out. I am able to import myself, no problem. Ron |
