Gamers looking forward to using the PlayStation 3 as a 3D Blu-ray player could be faced with a few limitations when the systemâ€™s BD 3D capabilities go live in October.
A piece in the Blu-ray 3D spec contains language that indicates the PS3 cannot handle 3D playback and BD-J at the same time:
[QUOTE][B] As defined in Part 3-1 Section 8.2.4, the Existing Game Console does not support the BD-J application environment during Stereoscopic Output Mode. Therefore, in order to maintain compatibility with the Existing Game Console, the First Playback Title will be authored such that:
1) it will not execute a BD-J application that depends on Stereoscopic Output Mode for successful execution; and
2) it will execute a BD-J or HDMV application that, when run on a 3D Game Console, directly or indirectly(*) activates an HDMV Title to play the relevant Stereoscopic PlayList(s) in Stereoscopic Mode.[/B]
The document goes on to describe how developers can fake 3D menus and subtitles using 2D with a 3D depth value (â€œ1plane+offsetâ€), instead of a true 3D experience.
So why is this necessary, given the high performance of the PS3 when it comes to Blu-ray playback?
The most likely answer, based on discussions Iâ€™ve had with developers, comes down to the Cell Processorâ€™s chip design. One of the secrets behind the PS3â€™s pep has been the Cell Processorâ€™s helper cores. The main CPU core takes care of the 1080p video decode while the 8 smaller ones have plenty of bandwidth to handle lossless audio and BD-Java. When you introduce the load of a second 1080p stream to the mix, something has to go and it looks like itâ€™s going to be BD-Java. Of course, there is a possibility that by refining and optimizing their code Sony may be able to add these features in the future, but as it stands itâ€™s not looking good. While this may be a cause for celebration for some home theater enthusiasts who are always annoyed by Java loading time, I have to wonder how this will affect Foxâ€™s output, since for them Java-based BD+ copy protection is mandatory.
Does this matter for the bigger Blu-ray 3D picture? Maybe; maybe not. Most users probably wonâ€™t even notice on the current titles, but with more elaborate 3D features on the horizon, itâ€™s certainly something that could tarnish the PS3â€™s reputation as one of the best Blu-ray players on the market.
We reached out to representatives of Sony Computer Entertainment for clarification on the matter, but havenâ€™t gotten a response yet. If they have any further insights, comments, or rebuttals, weâ€™ll be sure to report them here. [/QUOTE]Link: http://www.hometechtell.com/hometechnologytell/comment/PlayStation-3-unable-to-handle-bd-java-3D-menus-subtitles-simultaneously/