Subject: General Tech | July 1, 2013 - 02:20 PM | Tim Verry
Tagged: xbox one, Windows 8.1, tiled resources, microsoft, gaming, directx 11.2, DirectX
The release of a Direct X 12 API may still be uncertain, but that has not stopped Microsoft from building upon the existing DX 11 API. Specifically, Microsoft has announced an update in the form of DirectX 11.2, which makes some back-end tweaks and adds some new gaming-related features.
First shown off at BUILD last month, Antoine Leblond demonstrated Direct X 11.2, and one of the API's major features: tiled resources. He did not go into specifics, and Microsoft has not yet released documentation on DX 11.2, but during the presentation Leblond described tiled resources as a mechanism for supporting very high resolution texutres by allowing the game engine to use both dedicated graphics memory and system memory to store and read texture data. The demo reportedly featured 9GBs of texture data, which was shared between GDDR5 and DDR3 memory.
I am not certain on exactly how this "tiled resource" technology differs from what current games and hardware is already capable of, where the graphics card can use some amount of system RAM for its own purposes when it has data that cannot be stored in the limited GDDR5 space. Perhaps Microsoft has found a way to make the swapping process more efficient, or it could be a completely new way of enabling shared memory that would support HUMA/HSA-like strategies behind the DX abstraction layer to make it easier for game developers. This is all speculation, however.
The other major takeaway from the announcement is that the new DirectX 11.2 API will be exclusive to Windows 8.1 PCs and the company's Xbox One gaming console. It is suprising that Windows 8 is not included, but seeing as Windows 8.1 will be a free update it is not that big of a deal. Windows 7 users are not likely to be pleased with Microsoft witholding it as an incentive to get gamers to upgrade to its latest operating system. Hopefully some good will still come out of the exclusivity in the form of better ported games. Because the Xbox One supports DX 11.2, I'm hopeful that it will encourage game developers to take advantage of the latest technology and support it on the PC version as well when they do the port of the game.
Subject: Editorial, General Tech, Graphics Cards, Systems, Mobile | April 7, 2013 - 10:21 PM | Scott Michaud
Tagged: DirectX, DirectX 12
Microsoft DirectX is a series of interfaces for programmers to utilize typically when designing gaming or entertainment applications. Over time it became synonymous with Direct3D, the portion which mostly handles graphics processing by offloading those tasks to the video card. At one point, DirectX even handled networking through DirectPlay although that has been handled by Games for Windows Live or other APIs since Vista.
AMD Corporate Vice President Roy Taylor was recently interviewed by the German press, "c't magazin". When asked about the future of "Never Settle" bundles, Taylor claimed that games such as Crysis 3 and Bioshock: Infinite keep their consumers happy and also keep the industry innovating.
Keep in mind, the article was translated from German so I might not be entirely accurate with my understanding of his argument.
In a slight tangent, he discussed how new versions of DirectX tends to spur demand for new graphics processors with more processing power and more RAM. He has not heard anything about DirectX 12 and, in fact, he does not believe there will be one. As such, he is turning to bundled games to keep the industry moving forward.
Neowin, upon seeing this interview, reached out to Microsoft who committed to future "innovation with DirectX".
This exchange has obviously sparked a lot of... polarized... online discussion. One claimed that Microsoft is abandoning the PC to gain a foothold in the mobile market which it has practically zero share of. That is why they are dropping DirectX.
Unfortunately this does not make sense: DirectX would be one of the main advantages which Microsoft has in the mobile market. Mobile devices have access to fairly decent GPUs which can use DirectX to draw web pages and applications much smoother and much more power efficiently than their CPU counterparts. If anything, DirectX would be increased in relevance if Microsoft was blindly making a play for mobile.
The major threat to DirectX is still quite off in the horizon. At some point we might begin to see C++Amp or OpenCL nibble away at what DirectX does best: offload highly-parallel tasks to specialized processing units.
Still, releases such as DirectX 11.1 are quite focused on back-end tweaks and adjustments. What do you think a DirectX 12 API would even do, that would not already be possible with DirectX 11?
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