by cybx on Wed Jul 02, 2008 3:45 pm
The XNA team shared some of their goals for the next iteration of the API, DirectX 10.1, as well as a few of the longer-term aims for the progression of gaming on the PC.
10.1 will aim to eliminate some programmability limitations when it comes to the unified shader architecture established in 10, as well as laying down a minimum capability for anti-aliasing in hardware. 4x Multi-Sampling AA will be minimum for 10.1 - although we suspect that there will be many cards that can theoretically tick the box, yet are totally useless at this in practice. The new iteration will also add better support for arrays of textures using cube maps, with the aim of acceleration texture processing.
Looking forward to DirectX 11, which is surely a few years away yet, the Vole's stated high-end goals are to bring down the cost of authoring art for games, integrating with new PC hardware better, and enabling more interaction between the user and the game in the form of better physics, AI and other such gameplay functions.
To help with art costs - which are swiftly spiralling upwards, as games get bigger, longer and more detailed, thanks to next generation consoles - Microsoft will be implementing procedural content generation to help create larger textures. The API could also adjust image quality on the fly, within an engine - so if a game started to slow down as a level got more and more complex and busy, DirectX could scale back the detail level on screen to up the frame rate.
In terms of hardware integration, the XNA team pointed out that a number of hardware trends will need to be looked at. CPUs are adopting more and more parallel cores, and DX11+ will sport better support for parallel resource creation on threads, and a more friendly driver interface for working with parallel threading.
Stream processing and GPGPU are big movers and shakers in the graphics world, and DX11+ will bring in support for this functionality. Since GPUs are massively parallel processors, they could be potentially used for super-high precision arithmetic, which is much slower than the floating point single precision currently used.
From what we are told by reliable sources. MS was keen on having DX11 be part of Windows 7. DX10, which while technically pretty nifty, is saddled with Vista as an arm twist mechanism, so it is taking off like a water buffalo with bunions and a weight problem.
For Windows 7, MS basically pulled the mandatory DX11 requirement at the behest of one company that basically whined a lot. History tells us that if you throw a hissy fit, MS will screw itself over and cave in, look what they did to neuter DX10 when NV got all pouty. Now DX11 is gone, and the debate is about DX10, and whether it will even be mandatory.
If this sounds so absurd it borders on the surreal, think about this. Computers need to run Windows, and if MS specs the minimum reqs so high that the low end can't run it, well, they will turn 7 into MeIII just like Vista is becoming MeII. About half of PCs are sold with those crappy integrated graphics, and there is one company that won't make the cut there, so they cried to MS.
With three GPU vendors out there, this means that if DX11 is mandated, at least a quarter of the PCs won't run it, not to mention laptops, and that can't happen. The DX9 vs 10 as standard debate is also about the same thing, one company doesn't think they will have enough horsepower by then, so they moan.
In the end, it basically says that 7 is going to be an unlucky number. If they are already hacking at the few expected features now, imagine how much more is going to be cut when they are facing real deadlines?
Microsoft is giving DirectX 11 the boot from its next version of Windows to keep hardware requirements down -- apparently the DirectX 10 requirements of Vista were enough of that sort of trouble for one decade. Obviously there's no official word on Microsoft at the moment, so we'll reserve judgment for the time being -- and hey, maybe no DirectX 11 wouldn't ruin our year -- but with the endless quantity of features cut from Vista still fresh in our memory, this is certainly not an encouraging sign if true.
Well I hope it will be better than DX9 and DX10.
I didn't really see too much different between 9 and 10 apart from odd-one-out graphics that crash your PC.
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