DirectX10 backward compatibility

Hi,

I read on the official vista page that Vista will come with DX10 and DX9.0L
for backward compatibility, but DX10 will not be backward compatible.
Supposing I may use a DX10 compatible graphic card (Nvidia G80 for example)
with DirectX10 drivers on Vista and want to play an "old" game using DX9, can
I play this game without booting on an other partition, without installing
older GPU drivers for DX9 or even without rebooting ? Will an emulation layer
be present in Vista ?

(thanks and sorry if this was already answered)

geoffgrif wrote:
> Hi,
>
> I read on the official vista page that Vista will come with DX10 and
> DX9.0L for backward compatibility, but DX10 will not be backward
> compatible. Supposing I may use a DX10 compatible graphic card
> (Nvidia G80 for example) with DirectX10 drivers on Vista and want to
> play an "old" game using DX9, can I play this game without booting on
> an other partition, without installing older GPU drivers for DX9 or
> even without rebooting ?

Long story short, Yes you can. It will just work, you shouldn't have to do
anything weird because of DirectX issues on your system.

Whether or not the game itself will be compatible with Vista properly (or
even at all) is quite another question, of course.

Direct3D 9 works on Windows Vista, XP, etc.

Direct3D9Ex and Direct3D 10 only works on Windows Vista.

Since most existing games use Direct3D 9 or earlier, if they worked on XP
they should work on Windows Vista. Of course they may have varying levels of
compability issues due to things other than Direct3D, may have bugs that XP
tolerated will result in the applicatoin being shutdown on Windows Vista, or
may have relied on driver hacks to function that are not present in the new
WDDM drivers.

--
Chuck Walbourn
SDE, Game Technology Group

This posting is provided "AS IS" with no warranties, and confers no rights.

ea sports nascar simracing said operating system unknown an would not play
but can install it . want good is it to install a game if it can't play i
read that not ea sports games will play on vista

"Chuck Walbourn [MSFT]" wrote:

> Direct3D 9 works on Windows Vista, XP, etc.
>
> Direct3D9Ex and Direct3D 10 only works on Windows Vista.
>
> Since most existing games use Direct3D 9 or earlier, if they worked on XP
> they should work on Windows Vista. Of course they may have varying levels of
> compability issues due to things other than Direct3D, may have bugs that XP
> tolerated will result in the applicatoin being shutdown on Windows Vista, or
> may have relied on driver hacks to function that are not present in the new
> WDDM drivers.
>
> --
> Chuck Walbourn
> SDE, Game Technology Group
>
> This posting is provided "AS IS" with no warranties, and confers no rights.
>
>
>

lvlman.1998 wrote:
> ea sports nascar simracing said operating system unknown an would not
> play but can install it . want good is it to install a game if it
> can't play i read that not ea sports games will play on vista

EA Games stuff had the same problem with XP when XP was new.

They had the same problem with 2000 when 2000 was new.

They release yearly updates to their sports games that they want everyone to
rush out and buy.

Hmmm....

Actually that is not true.

The Nascar racing game that he is talking about is from 2003, and has not
been updated since. I would GLADLY pay for a version that works for Vista.

The last OS change was 5 years ago...so I am not sure that EA has been able
to "break" their applications for quite some time to make people buy
upgrades....


"Robert Moir" <robspamtrap@gmail.com> wrote in message
news:eNQSvl3GHHA.2456@TK2MSFTNGP06.phx.gbl...
> lvlman.1998 wrote:
>> ea sports nascar simracing said operating system unknown an would not
>> play but can install it . want good is it to install a game if it
>> can't play i read that not ea sports games will play on vista
>
> EA Games stuff had the same problem with XP when XP was new.
>
> They had the same problem with 2000 when 2000 was new.
>
> They release yearly updates to their sports games that they want everyone
> to rush out and buy.
>
> Hmmm....
>

Vista Newsgroups wrote:
> Actually that is not true.
>
> The Nascar racing game that he is talking about is from 2003, and has
> not been updated since. I would GLADLY pay for a version that works
> for Vista.
> The last OS change was 5 years ago...so I am not sure that EA has
> been able to "break" their applications for quite some time to make
> people buy upgrades....

Fair enough, but they did this during the change to XP, as I said.

One of the things the "XP Compatability Mode" does is to lie to the
application about the OS version. Have you tried that?

--
Chuck Walbourn
SDE, Game Technology Group

This posting is provided "AS IS" with no warranties, and confers no rights.

actually your wrong I was talking about ea sports simracing 2005 it will
install, but will not play on vista. but sierra/papyrus nascar racing 2003
season will install and play just great on vista and it look great too.

"Vista Newsgroups" <johnny@jonestown.com> wrote in message
news:%23hOBiG8GHHA.4712@TK2MSFTNGP04.phx.gbl...
> Actually that is not true.
>
> The Nascar racing game that he is talking about is from 2003, and has not
> been updated since. I would GLADLY pay for a version that works for Vista.
>
> The last OS change was 5 years ago...so I am not sure that EA has been
> able to "break" their applications for quite some time to make people buy
> upgrades....
>
>
> "Robert Moir" <robspamtrap@gmail.com> wrote in message
> news:eNQSvl3GHHA.2456@TK2MSFTNGP06.phx.gbl...
>> lvlman.1998 wrote:
>>> ea sports nascar simracing said operating system unknown an would not
>>> play but can install it . want good is it to install a game if it
>>> can't play i read that not ea sports games will play on vista
>>
>> EA Games stuff had the same problem with XP when XP was new.
>>
>> They had the same problem with 2000 when 2000 was new.
>>
>> They release yearly updates to their sports games that they want everyone
>> to rush out and buy.
>>
>> Hmmm....
>>
>

I tried the BF2142 and it griped about not having a Directx9.dll.
So I installed 9 and the game works now.
My question is should I have had to install 9 and will it be ok that I did?

Thanks

"Chuck Walbourn [MSFT]" wrote:

> Direct3D 9 works on Windows Vista, XP, etc.
>
> Direct3D9Ex and Direct3D 10 only works on Windows Vista.
>
> Since most existing games use Direct3D 9 or earlier, if they worked on XP
> they should work on Windows Vista. Of course they may have varying levels of
> compability issues due to things other than Direct3D, may have bugs that XP
> tolerated will result in the applicatoin being shutdown on Windows Vista, or
> may have relied on driver hacks to function that are not present in the new
> WDDM drivers.
>
> --
> Chuck Walbourn
> SDE, Game Technology Group
>
> This posting is provided "AS IS" with no warranties, and confers no rights.
>
>
>