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INQ -DX10.1 not compatible with current DX10 hardware

SteveOBHave

SteveOBHave

SteveOBHave

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Doh - if true this is an apalling lapse on MS part.

http://www.theinquirer.net/?article=41577

INQ said:
Here's the thing. DX10 hardware - such as the GeForce 8800 or the Radeon 2900 - won't work with the new 10.1 features. The 0.1 revision requires completely new hardware for support, thus royally cheesing off many gamers who paid top whack for their new hardware over the last few months on the basis of future game compatibility
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knowledge123 said:
Somehow, I very much doubt it, INQ going overboard again, DX10 is/was designed for this specifically not to happen, iirc.
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It's deffo a really big call and would be a pretty astounding oversight. Astoundingly arrogant if it's the case.
 
I distinctly remember reading the 2900 was compatible with dx10.1 maybe not the full api spec but it was definitely compatible. This would be an extreme oversight if this was true which i strongly doubt considering all DX apis have been backwards compatible.
 
SS-89 said:
I distinctly remember reading the 2900 was compatible with dx10.1 maybe not the full api spec but it was definitely compatible. This would be an extreme oversight if this was true which i strongly doubt considering all DX apis have been backwards compatible.
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only 2900? not 2600 also?
 
jaykay said:
Its true. The r600 is dx10.1 compatable, while the g80 isn't.
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Anything to back that up?

There's quite a bit to 10.1, some of the functions meantioned.

Updated shader model 4.1
Improved shadow filtering
Cube mapping
Better floating point blending
Better multi-core CPU support
Full application AA control
FP32 filtering
Double precision math FP64
Min 4xMSAA caps
WDDM 2.1
Custom downsampling filters
Page level context switching
Pixel coverage mask

No mentioned of Tessellation, which is the one thing the XT does have.

http://msdn2.microsoft.com/de-de/xna/aa937789.aspx



ref

10.1 speculation from 2006
Game Developers Conference 2007
D3D10
Desktop And Presentation Impact On Hardware Design
Future Directions In Graphics
 
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Direct3D 10.1 Tech Preview

Direct3D 10.1 is an incremental, side-by-side update to Direct3D 10.0 that provides a series of new rendering features that will be available in an upcoming generation of graphics hardware.

* TextureCube Arrays which are dynamically indexable in shader code.
* An updated shader model (shader model 4.1).
* The ability to select the MSAA sample pattern for a resource from a palette of patterns, and retrieve the corresponding sample positions.
* The ability to render to block-compressed textures.
* More flexibility with respect to copying of resources.
* Support for blending on all unorm and snorm formats.

This tech preview provides an early look at these features and the handful of new APIs that support them. The August 2007 Direct3D 10.1 Tech Preview requires the Windows Vista SP1 Beta which will be available to MSDN subscribers once it is publicly released.
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Some of the features of DX10.1 from microsoft.

Edit: Awww beaten too it.
 
fornowagain said:
Anything to back that up?
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http://www.xbitlabs.com/news/video/display/20070403235139.html
It was also reported that the next-generation graphics chip from AMD’s graphics division formerly known as ATI Technologies will support so-called GPU clustering, which allows to install 2ⁿ number of GPUs (4, 8, 16, 32, etc), though it is unclear whether this is something new, as ATI’s graphics chips supported multi-GPU capability for professional solutions from companies like Evans & Sutherland for many years now. In addition, it was revealed that the R600 chip is compatible with “draft DX10.1 vendor-specific cap removal” application programming interface, something, which is unlikely to be utilized for a substantial amount of time.
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gareth170 said:
http://www.xbitlabs.com/news/video/display/20070403235139.html
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That's not DX10.1, it's just the removal of capability bits in the API.

Something they started in DX10. D3D9 and below used "capability bits" indicating which features were active on the card. Now they just say all or nothing, the card must have all the minimum set of capabilities supported or it drops back to the lower spec.
 
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Who cares even if it is true?

Did anyone seriously buy an 8800 or 2900 for the DX10 compatibility?

I bought mine because it offered great DX9 performance. By the time DX10 (or DX10.1) games are common place, then these cards will be on their knees begging you to run the game on low settings. If anyone was desperate for decent DX10 performance then they shouldn't have bought an 8800/2900 anyway and should have waited for the next gen of cards.

IF the 8800/2900's give good DX10 performance in games, then that's a bonus. But if DX10 games run like **** on them, then I won't care. I didn't buy mine for DX10 support and no-one else should have either. There were no benchmarks available, so DX10 performance is a total unknown - so buying one and hoping it works well in DX10 was a total gamble anyway.
 
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By the time more DX10 games are even out it'll be time to upgrade, I do feel a bit sorry for the people with SLi/XFire G80/2900 though.
 
div0 said:
Who cares even if it is true?

Did anyone seriously buy an 8800 or 2900 for the DX10 compatibility?

I bought mine because it offered great DX9 performance. By the time DX10 (or DX10.1) games are common place, then these cards will be on their knees begging you to run the game on low settings. If anyone was desperate for decent DX10 performance then they shouldn't have bought an 8800/2900 anyway and should have waited for the next gen of cards.

IF the 8800/2900's give good DX10 performance in games, then that's a bonus. But if DX10 games run like **** on them, then I won't care. I didn't buy mine for DX10 support and no-one else should have either. There were no benchmarks available, so DX10 performance is a total unknown - so buying one and hoping it works well in DX10 was a total gamble anyway.
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theres no real directx 10 game yet. crysis will be a real directx 10 game not just patch to directx 10... u'll see a big improve performance in crysis in dx 10 than lost planet
 
errm, old hardware, doesn't support new spec, i'm trying to find out where the interesting news is in that?

did the first dx9 cards support later updates in dx9? no.

either way, nvidia will just fail to meet expectations and have MS drop certain bits of the DX10 spec so that nvidia still manage to meet a lowered dx10 spec and are allowed to advertise as DX10. Talking about, damn it, forgot the name of it. one of the memory/driver bits DX10 was supposed to support, nvidia couldn't get it to work in drivers so pushed MS to drop it as a requirement for DX10. though, they really should have asked MS to drop whatever else it was that caused them so much difficulty getting out stable drivers for so long, then the other problem thats causing them issues with memory leaking now. anyone else think nvidia's driver team is utterly useless.
 
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