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post #31 of 33
Quote:
Originally Posted by Iceman23 View Post
You said "There's a huge difference between DX9 and DX11". One would logically apply that to its application in games. Now if you said that there's a huge difference in the capabilities of DX9 and DX11 I would agree.
I'd say that saying there's a huge difference between DX9 and DX11 is the same as saying there's a huge difference between their capabilities.
I'd also have said that there is a huge difference between SATA 3 Gbps and SATA 6 Gbps even if we hadn't invented HDD's or SSD's that could use it, because the difference is there, it's just not being used. Would you argue that there would be no difference between SATA 3 Gbps and SATA 6 Gbps just because we didn't have any HW that could use 6 Gbps bandwidth? No, there is a difference. A big one at that.

Quote:
Originally Posted by lyster View Post
It does in Metro 2033. Playing in DX10 i get a pretty big jump in FPS. Same goes for Dirt 2 and Bad Comapny 2 (not that FPS is a problem for either of these games).

Tessalation also has quite a big impact on performance - unless i'm mistaken!
Yes, but it's not DX11 that causes the drop in performance, it's the features being used. Metro 2033 applies AAA, tessellation, and motion blur to objects when using DX11 with no way of turning them off AFAIK.

Also, if DX11 is added as an afterthought (or for some other reason not optimized properly) it won't increase performance.
Edited by B!0HaZard - 5/20/11 at 7:13am
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post #32 of 33
Quote:
Originally Posted by B!0HaZard View Post
Yes, but it's not DX11 that causes the drop in performance, it's the features being used. Metro 2033 applies AAA, tessellation, and motion blur to objects when using DX11 with no way of turning them off AFAIK.
So what's the difference between DX11 and the 'features being used'?

If turning on DX11 requires certain features to be enabled then isn't enabling DX11 responsible for the drop in performance?
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post #33 of 33
Quote:
Originally Posted by lyster View Post
So what's the difference between DX11 and the 'features being used'?

If turning on DX11 requires certain features to be enabled then isn't enabling DX11 responsible for the drop in performance?
No, because DX11 in itself does not require certain features to run, only the game does. The developers have made it like this, not DX11.
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