There's a really interesting thread about Dx11.3 vs Dx12 in Windows 9 (now Windows 10) and why Dx11.3 will be ported to previous Windows but not Dx12: http://forums.mydigitallife.info/threads/56890-Info-Windows-9-WDDM-2-DirectX-12 Interesting part: So at the beginning, both Dx11.3 and Dx12 will have the same feature level, but obtained with different "technologies" which require different overhead. So... what do you think about all this?
http://forums.mydigitallife.info/th...rectX-12/page2?p=950340&viewfull=1#post950340 meh, not too worried if this guys comment is anything to go by.
The main thing interesting for me is the reduced driver overhead, and that won't change until full dx12 with win10 anyway, or am I wrong?
^^yeah, going by that article it seems that seems that 11.2 will have few bits and bobs, but dx12 is where its at. Though, none of it matter if dx12 gets treated like 11 and we only have...what 25 games i think some posted.
I just want to get one thing clarified: When Windows 10 ships with WDDMv2/DX12, can I still play older DX9 games with that?
No one can give you a concrete yes or no at this time. MS is known for good compatibility, I wouldn't really worry about it. If it worked in Windows 8.1, it will likely work in 10. Hopefully the issues introduced in 8.1 will also be rectified.
I think technically nothing prevents MS to extend or combine current WDDM implementation in Win8 to support a new level. I did not dive in subject but from a programmer generic point of view adding new mini- and/or usermode-driver which will support DX12 needs does not require full driver stack rework.
NVidia and AMD always, take advantage of there technologies which are all annoying. every day, every month - new products emerge - saying this products have new technology feature, but the truth is they already have this prior the released of new product, they all profiting by implementing piece by piece - can we consumer have a full bundle package?! the answer is NO. everyday I wake up, go to school browsing here, new product is on display - I'm tired looking at the specs, cause its only means MONEY. sometimes I wonder if there would be a man with a beautiful MIND, that he can make a program that my old Intel Pentium 4 with 256 RAM, 128 mb of graphic memory can run GAMES OF TODAY, (lol here) how I wish for that someone. cause NVIDIA and AMD sucks.. sorry but I think its true. I only want to play of todays games, but if you want to play their game - it looks like you have to upgrade your rig.. it looks like everyday upgrade.
We are talking about MS here. http://answers.microsoft.com/en-us/...-72b2-4688-95ed-c745ddd38825?tm=1401272934879 Old games are generally less compatible with Windows 8 than Windows 7 because of this.
The only games I myself had problems with in 8.1 were the old SAGE engine C&C games. The community has its own fixes .. just drop 3 dll files into Tiberian Sun's directory or add a line in a ini file for Red Alert 2. No big deal. Of course it would be appreciated if MS undid the damage of 8.1 in 10 because 8.0 had the same level of compatibility as 7. Not sure how much I care though. I've played those games to death well over a decade ago.