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Unstable_Hero
08-14-08, 01:27 PM
Nvidia demonstrates ray tracing on the GPU
Aug 14, 2008 18:22 - Nvidia says to have demonstrated the first GPU only ray trace at Siggraph 2008.
The tech demo shows a sports car, which, according to Nvidia, contains up to two million polygons. The rendering performance is said to scale linear. The resolution is said to be 1,920 x 1,080. The demo shows ray tracing shadows, reflections and refractions as well as an anti-aliased image. The application is running on a Quadro Plex 2100 D4 with four GPUs.

http://www.pcgameshardware.com/aid,655883/News/Nvidia_demonstrates_ray_tracing_on_the_GPU/

edit: images scaled from 2560-1600 to 1920-1200
http://img124.imageshack.us/img124/6776/scaledraytrace1sp0.jpg

http://img47.imageshack.us/img47/9206/scaledimage2xc0.jpg

nekrosoft13
08-14-08, 01:34 PM
wow that looks really ugly

Bearclaw
08-14-08, 01:40 PM
It's a start. :) I love the reflections in the windows.

ViN86
08-14-08, 01:44 PM
wow that looks really ugly

Rome wasnt built in a day ;)

BronzeGod
08-14-08, 02:45 PM
wow that looks really ugly

PATIENCE PEON! (nana2)

CaptNKILL
08-14-08, 03:02 PM
Accurate reflections and shadows are good, but I have yet to see anything Ray Traced that looked impressive...

This is the closest I've seen, but it still doesn't look like much. Razor sharp shadows just look unnatural.

And there must be some pretty serious limitations with texturing becuase it always looks like ass.

I'd love to see ray tracing take off, but its going to take a hell of a lot more than pinpoint accurate reflections and shadows to make ray traced games look better than standard games. I'd just like to see ONE screenshot of a ray traced game or engine that actually looks better than a non-ray traced game. Even if its running at 1fps, I want to see it done... because at this point it looks like ray tracing is good at some things and incapable of doing other things.

Unstable_Hero
08-14-08, 03:43 PM
I think only the shadows/reflections/refractions on the car and buildings are ray traced. The textures are normal rasterisation.

lightman
08-14-08, 04:16 PM
I have yet to see anything Ray Traced that looked impressive...

http://hof.povray.org/images/mouille.jpg

Zeus666
08-14-08, 04:43 PM
It's a start. :) I love the reflections in the windows.


me too

http://www.pcgameshardware.com/screenshots/original/2008/08/NVIDIA_RT_demo1.jpg


impressive

CaptNKILL
08-14-08, 04:49 PM
http://hof.povray.org/images/mouille.jpg

I guess I worded my last post poorly... What I'm doubting is the ability for Ray Tracing "engines" to properly work with all of the high resolution visual effects we already have in real time.

Renders like the one you showed are obviously a lot different than real time rendering, since there is no limit to what can be shown in a picture when you're spending hours rendering a single frame in a proprietary environment like 3d Studio or Maya (rather than OpenGL or Direct3D).

It just seems odd that with all of the amazing advances in hardware and ray tracing technology over the years, real time ray tracing demos generally look like ass outside of the reflections...

crainger
08-14-08, 04:50 PM
You will never win!

CaptNKILL
08-14-08, 04:52 PM
Get out of here stalker...

crainger
08-14-08, 04:54 PM
http://img.photobucket.com/albums/v420/Orion682/russia.jpg

Noriega
08-14-08, 05:13 PM
http://i236.photobucket.com/albums/ff199/Offlian/fail-owned-disease-fail.jpg

Chernobyl is not in Russia.

PS NV demos rally never impressed me have y'all saw AMD demo?
http://www.pcgameshardware.com/aid,655742/News/Ruby_20_Screenshots_and_video_of_the_new_Radeon_te ch_demo/

crainger
08-14-08, 05:15 PM
Well I didn't make the pic. I found it.

So http://i236.photobucket.com/albums/ff199/Offlian/fail-owned-disease-fail.jpg

Back at you ::D:

Monolyth
08-14-08, 05:36 PM
I guess I worded my last post poorly... What I'm doubting is the ability for Ray Tracing "engines" to properly work with all of the high resolution visual effects we already have in real time.

Renders like the one you showed are obviously a lot different than real time rendering, since there is no limit to what can be shown in a picture when you're spending hours rendering a single frame in a proprietary environment like 3d Studio or Maya (rather than OpenGL or Direct3D).

It just seems odd that with all of the amazing advances in hardware and ray tracing technology over the years, real time ray tracing demos generally look like ass outside of the reflections...

I've found most ray-traced demo's don't get into textures much which is probably why it looks like a 10yr old CGI video (except for the reflections/lighting). Combine the power of ray-tracing with a fully HQ textured scene and you'll get something that looks damn near real (and probably not real-time). The very fact they can do some of this stuff real-time is a testament to the power of modern processors.

In our lifetime we are in for a treat consider the power of GPU's 10 years ago to their power today, if Moore's law keeps up consider the progress 10 years from now, and 10 years from then. We will see photo-realistic graphics in our lifetime if not within 10 years.

SH64
08-14-08, 06:19 PM
Good to see Nvidia pushing ray-tracing forward :thumbsup:

Ninja Prime
08-14-08, 07:06 PM
Interesting, wasn't Nvidia's PR telling us all how stupid ray tracing was about a month ago? :rolleyes:

Zeus666
08-14-08, 09:55 PM
PS NV demos rally never impressed me have y'all saw AMD demo?
http://www.pcgameshardware.com/aid,655742/News/Ruby_20_Screenshots_and_video_of_the_new_Radeon_te ch_demo/[/QUOTE]


oh finally thanks !

nekrosoft13
08-14-08, 10:26 PM
Interesting, wasn't Nvidia's PR telling us all how stupid ray tracing was about a month ago? :rolleyes:

it still might be, but if intel is going to push it they have to adopt and get ready

XDanger
08-15-08, 08:20 AM
Is it impossible to mix ray-traced scenes with regular stuff?

buicks suck
08-15-08, 01:23 PM
I love the total lack of jaggies.

The 2 main issues I have with rasterization are depth precision (in DX, not opengl) and aliasing; if those 2 could be abolished then I would be happier than ever before in my entire life.

They're using some excellent aa. I've never seen aa that good in a rasterized image.

buicks suck
08-15-08, 01:25 PM
I should note that I also see the Geforce FX mascot. What was her name?

Intel17
08-15-08, 01:56 PM
It's Dusk. Anyway, while that's interesting, I think it'll be a while before ray-tracing will be used in mainstream. Even if it is, it'll probably not be used exclusively, since there are things rasterization is just plain better at.

MaXThReAT
08-15-08, 02:31 PM
Just in case none of your realize this yet the NV Madusa demo, running in real time, uses raytracing.