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[Microsoft] DirectX12 Announced - Page 24

post #231 of 267
Quote:
Originally Posted by EVGA-JacobF View Post

Depends, in the old/old days the API was not tied so closely to hardware.

What do you mean? DX9 and prior had cap bits that each hardware had to support. The support of the API features was closely tied to the hardware.
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post #232 of 267
Quote:
Originally Posted by DuckieHo View Post

What do you mean? DX9 and prior had cap bits that each hardware had to support. The support of the API features was closely tied to the hardware.
He said old/old. I am guessing he is talking about days of the voodoo or the RAGE etc. DX9 is what, 10-11 years old? But back in dx9 days I believe the DX support was tied to shader model support. SM2.0 cards were dx 9.0a and 9.0b, and SM3.0 cards were dx 9.0c. Correct me if I am wrong, I am going off what I think I remember.
Edited by 8800GT - 3/20/14 at 10:21pm
post #233 of 267
Quote:
Originally Posted by 8800GT View Post

He said old/old. I am guessing he is talking about days of the voodoo or the RAGE etc. DX9 is what, 10-11 years old? But back in dx9 days I believe the DX support was tied to shader model support. SM2.0 cards were dx 9.0a and 9.0b, and SM3.0 cards were dx 9.0c. Correct me if I am wrong, I am going off what I think I remember.

No, it was vastly more complex that..... it was tied to the capability bits. For example, a DX9 card may support only some features of DX9 but was still considered DX9-capable. Developers had to write their code that checked the cap bits and branch their code to support/disable features.
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post #234 of 267
Pre DX9, like DX7/DX6 if I remember correctly. There were multiple version of each, 7.1, etc, that did not always require new hardware for the features to be utilized. Similar to OpenGL.

After DX8 (and especially DX9) there were stricter hardware requirements on DX/Shader level.
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post #235 of 267
Quote:
Originally Posted by SlackerITGuy View Post

Johan Andersson during his DirectX12 talk just a few minutes ago: "DX12 support on Windows 7 critical for us."

Source: https://twitter.com/ryanshrout/status/446816948618158080

Interesting..

As I stated in another article, if MS doesnt support Win 7 it will just drive people to Mantle, and also possibly to SteamOS or other Linux solutions in the future. Microsoft cant play the same way of "We're number 1, we're too big to fall" anymore lest they lose MORE marketshare.. Win 8 has NOT performed well if you look at the adoption figures (with a lot of folks downgrading to 7)

Because Mantle will run on anything theoretically. AMD is also likely not particularly picky because they win in the end...
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post #236 of 267
So what i got from the article is that Dx12 is basically Mantle + DX11 for all cards. there are no new "eye candy" features, just low level API for reduced CPU usage.

Am i missing something here?
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post #237 of 267
Quote:
Originally Posted by Zaid View Post

So what i got from the article is that Dx12 is basically Mantle + DX11 for all cards. there are no new "eye candy" features, just low level API for reduced CPU usage.

Am i missing something here?

No but hey, thats not a bad thing, It means those of us who dont upgrade as often could be able to get by a bit longer with our current GPUs as graphics improve.. Especially since AMD and nVidia said most of their recent GPUs will be DX12 capable, Future DX12 games could also just be better optimized out of the gate and run better without needing to wait for 5 patches and 16 driver updates to get working. Would be nice if it also simplified SLI and Crossfire implementation.

Now the question is how much performance improvement can we see? Mantle does give a respectable improvement in the two titles ive seen using it (And its in its infancy)
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post #238 of 267
Quote:
Originally Posted by KenjiS View Post

No but hey, thats not a bad thing, It means those of us who dont upgrade as often could be able to get by a bit longer with our current GPUs as graphics improve.. Especially since AMD and nVidia said most of their recent GPUs will be DX12 capable, Future DX12 games could also just be better optimized out of the gate and run better without needing to wait for 5 patches and 16 driver updates to get working. Would be nice if it also simplified SLI and Crossfire implementation.

Now the question is how much performance improvement can we see? Mantle does give a respectable improvement in the two titles ive seen using it (And its in its infancy)

well i guess more performance would allow developer to increase graphics "quality" while keeping the same requirements. hopefully win7 support is there, otherwise it will take years to be of any use,hopefully mantle can put enough pressure on MSFT or win7 dx12 support.
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post #239 of 267
Quote:
Originally Posted by Zaid View Post

So what i got from the article is that Dx12 is basically Mantle + DX11 for all cards. there are no new "eye candy" features, just low level API for reduced CPU usage.

Am i missing something here?

Better performance allows developer to implement better eye candy and/or use CPU more efficiently smile.gif
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post #240 of 267
Quote:
Originally Posted by Zaid View Post

So what i got from the article is that Dx12 is basically Mantle + DX11 for all cards. there are no new "eye candy" features, just low level API for reduced CPU usage.

Am i missing something here?

Seems you're not alone in thinking it, there are some jumped up opinions here.

http://forums.overclockers.co.uk/showthread.php?p=26040677#post26040677


Mantle is definitely not DX12. They are both out to achieve the same goal, but are both completely different.

Most of the API / Driver work is carried out by XBOX1 OS driver team which is based in Redmond. They work along side AMD as obviously they're the ones who built the hardware. However it is Microsoft, not AMD that evolves the drivers and incremental updates to both the API and the drivers for PC and XBOX1

These opinions that DX12 is based on Mantle are totally misinformed. It may however be the case that Mantle is incorporated into DX12 entirely at some point in the not so distance future, but both APIs as it stand are not the same beast.
Edited by Silent Scone - 3/21/14 at 7:01am
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