New Nvidia Tech Demos On Ati Cards

[Kallidoan]

Why doesnt someone download the new Tech Demos from nvidia, DAWN, ORGE, TOYS, and TIME MACHINE and run them on ATI cards, I want to know if the NVIDIA demos look good on ATI hardware. Test on the new hardware and the old hardware. Ya know 9800, 9700, and the whole lot.

The links are here

ftp://download.nvidia.com/downloads/GeForceFX_Demos/Dawn.exe

ftp://download.nvidia.com/downloads/GeForceFX_Demos/Ogre_1.1.exe

ftp://download.nvidia.com/downloads/GeForceFX_Demos/Time_Machine.exe

ftp://download.nvidia.com/downloads/GeForceFX_Demos/Toys.exe



For that matter, why not test the ATI demos on Geforce hardware, the TIs and the FXs

here are the links to the ATI demos:

http://pdownload.mii.instacontent.net/ati/misc/demos/ATI-9800-Chimp-Demo-v1.0.exe

http://pdownload.mii.instacontent.net/ati/misc/demos/ATI-9800-Caves-SS-v1.0.exe

lets see how each one handles.

[jjjayb]

The ati demos should run fine on the fx cards, they are written with dx9 and no proprietary extensions. The nvidia demos won't work on ati cards, they are written in ogl with Nvidia extensions I believe.

[Kallidoan]

belive, or fact. dont tell me what your beliefs are. If I had an ati card id try running the nvidia demos right now... but i dont, so go to it and tell me what happens

[Nv40]

according to some quadro users the
Nvdia demos runs all at FP32 PS color precision ,
so you will need to reprogram all the shaders
used by NVidia to ATi FP24 mode , and
some demos (time machine) according to
Nvidia runs at 350+ long intructions .

ati ANimusic demo run fine on quadro boards,
but the sport car demo crash in Nvidia cards..

this info comes from B3d forum.

[jjjayb]

belive, or fact. dont tell me what your beliefs are

Ok Mr. Rude one. Fact. When you try to run them on a 9700 you get an error with a list of NV extensions you need to run them. They are written with proprietary Nvidia open gl extensions.

[euan]

If you go to http://www.tommti-systems.com and download 3DAnalyse it has an option to make the DirectX demos run. It turns out Nvidia have simply picked caps (capabilities) that are not on the Radeon family. The even stranger thing is the caps aren't even used by the demos. They are simply picked to stop the Radeon cards running them without having code in the program that says if (3dcard == Radeon) exit demo;

[Hellbinder]

according to some quadro users the
Nvdia demos runs all at FP32 PS color precision ,
so you will need to reprogram all the shaders
used by NVidia to ATi FP24 mode , and
some demos (time machine) according to
Nvidia runs at 350+ long intructions .

Complete BS...

As just one example At the ATi presentation for teh 9800pro they showed an OpenGL dynamic light demo programed in OpenGL by an outside source. It was 256 instructions and barely got 5 FPS on the Quadro FX ocerclocked to 500. It was also running in FP16 mode.

AS slow as FP32 tests run (even doom-III) it is utterly ABSURD, to try to push the idea that the FX can run ANYTHING EVER in FP32 at anything close to a reasonable frame rate. Let alone a supposed 356 instruction shader.

Its completely utterly preposterous.

[kyleb]

Originally posted by euan
If you go to http://www.tommti-systems.com and download 3DAnalyse it has an option to make the DirectX demos run. It turns out Nvidia have simply picked caps (capabilities) that are not on the Radeon family. The even stranger thing is the caps aren't even used by the demos. They are simply picked to stop the Radeon cards running them without having code in the program that says if (3dcard == Radeon) exit demo;


which demos are d3d though?

[Hanners]

Originally posted by euan
If you go to http://www.tommti-systems.com and download 3DAnalyse it has an option to make the DirectX demos run. It turns out Nvidia have simply picked caps (capabilities) that are not on the Radeon family. The even stranger thing is the caps aren't even used by the demos. They are simply picked to stop the Radeon cards running them without having code in the program that says if (3dcard == Radeon) exit demo;

That worked for the nVidia-only Gun Metal demo, but these nVidia tech demos are OpenGL, and use nVidia extensions, so short of reprogamming the demos I don't see that there is a way around it.

[euan]

Originally posted by Hanners
That worked for the nVidia-only Gun Metal demo, but these nVidia tech demos are OpenGL, and use nVidia extensions, so short of reprogamming the demos I don't see that there is a way around it.

bah!

[Dazz]

I belive GunMetal is DX 9 game and not OpenGL and people have said they have had it working on R300 based video cards.

[Hanners]

Originally posted by Dazz
I belive GunMetal is DX 9 game and not OpenGL and people have said they have had it working on R300 based video cards.

That's correct, but the initial demo which was released was set to check for certain DirectX caps that only nVidia cards used, and would refuse to run on anything else.

A version was later released that would run on all cards, but in the meantime people used a piece of software called 3DAnalyze to emulate those DirectX caps so that the game would run on all hardware.

[euan]

The great part was that the Demo didn't use nor require the caps in the first place. :angel2:

[nvnuser]

If you go to http://www.tommti-systems.com and download 3DAnalyse it has an option to make the DirectX demos run. It turns out Nvidia have simply picked caps (capabilities) that are not on the Radeon family. The even stranger thing is the caps aren't even used by the demos. They are simply picked to stop the Radeon cards running them without having code in the program that says if (3dcard == Radeon) exit demo;

I've got the demos specified at the start of the thread and have a 128MB ATI Radeon 9800 Pro card.

The NVidia Dawn demo and the 2 ATI demos work fine. There's mention that 3DAnalyze might get other demos running. I've got version 2.36 but need to know what settings I have to use to get the other demos running. Can anyone help please?

[fivefeet8]

You're about 2 years late.

[Abba Zabba]

Complete BS...

As just one example At the ATi presentation for teh 9800pro they showed an OpenGL dynamic light demo programed in OpenGL by an outside source. It was 256 instructions and barely got 5 FPS on the Quadro FX ocerclocked to 500. It was also running in FP16 mode.

AS slow as FP32 tests run (even doom-III) it is utterly ABSURD, to try to push the idea that the FX can run ANYTHING EVER in FP32 at anything close to a reasonable frame rate. Let alone a supposed 356 instruction shader.

Its completely utterly preposterous.

Wow, I guess you just missed the clue bus dude.
I write shaders that run full precision on both ATi and Nvidia cards all the time and the framerate is reasonably high.
Phong, Reflection & Refraction, video filtering etc... all could be done using the FP32 precision at extremely high frame rates on the GF 6800+ series, as a matter of fact, switching to FP16 in some shaders barely yield any performance gains.
I'll put up few screenshots to back up my claims.

[fivefeet8]

:eek: :afro2: um... 2 years old.... Thread.. Hellbinder.... BAnned 2 years ago... Nv3x timeline...

[Abba Zabba]

http://www.realityflux.com/abba/C++/GLSLReflRefrChrm/FP16.jpg

http://www.realityflux.com/abba/C++/GLSLReflRefrChrm/FP32.jpg

Not hardly a performance hit but the frame rate is still up and high :)

[fivefeet8]

:rolleyes: :eek: :eek: :eek: :eek: :p

[Subtestube]

Abba: Bear in mind that that chap posted that 2 years ago - on FX class hardware there WAS a big perf hit from moving from FP16->FP32. We're all very well aware that one of the nice (and true) claims to fame of the NV40 class hardware is that the increased precision calculations come at almost no extra cost.

[Abba Zabba]

Silly me, I just noticed that :p

[ChrisRay]

I am going to close this thread.. it's kinda comical it got bumped :)