Nvidia Brings DXR Raytracing to Pascal, Turing and Volta

[randomhkkid]

Starting with a driver in April DXR capabilities will be enabled on non-RTX cards from the current and previous generation.

 

 

Non-RTX Turing amd Volta will utilise INT32 + FP32. Pascal series cards will use FP32 only.

 

 

Nvidia gives us an indication of the performance we can expect rendering a single frame of Metro Exodus. They compare roughly equivalent cards in the RTX 2080 and the GTX 1080Ti.

 

A rough visual estimate gives:

* INT 32 + FP32 - 2.5x slower

* FP32 - 3.2x slower

 

Converting this to frametimes and framerate assuming the bottom one is 16.66ms 60fps gives:

* INT 32 + FP32 - 41.65ms, 24fps (cinematic af)

* FP32 - 53.31ms, 19fps

 

A second visualisation shows that DLSS provides a roughly 20% boost to the RTX card's performance. Without it the 1080ti is still around 2.8x slower at the same settings.

 

 

 

Hopefully this does pave the way for more adoption of DXR in the industry. With AMD incoming with DXR support there should be a good number of users with access to the technology. Unity and Unreal have announced support for DXR in upcoming releases of their engines.

 

 

Beyond games this is also great news for a range of 3D rendering applications.

[Taf the Ghost]

Because its a DX12 feature. Not that running any DXR approaches on a GPU without Async would be a great idea.

[callumggibson]

Sure I'll play 480p@60fps!  Jokes aside, good move.

[TrigrH]

OMFG 3 TIMES FASTER USING A SETTING THE GIMPS THE FRAMERATE AND BLURS THE IMAGE WOOO!!!!!!!!

Seriously though, i'm happy that i opted for a cheaper 1080ti with more vram thats faster in workloads that actually matter to me.

[Mira Yurizaki]

I'm curious what this really means, considering that people have been running DXR on earlier cards using its fallback layer since the (stable) launch of 1809 (https://www.reddit.com/r/nvidia/comments/9lcs4u/microsoft_dxr_demos_compiled_for_windows_10/)

 

33 minutes ago, randomhkkid said:

Non-RTX Turing amd Volta will utilise INT32 + FP32 async compute mode. Pascal series cards will use FP32 only.

Turing can do INT32 + FP32 at the same time regardless of asynchronous compute. This is one of the architectural improvements they did over Pascal.

[RejZoR]

So, technically I could play BF5 with GTX 1080Ti and ray tracing enabled. I missed watching slideshows in recent 3DMarks that run too well. This sure as hell won't lol

[Jurrunio]

I know the 1060 6G in my laptop and 1070 in my desktop have no hope in running DXR with playable frame rates, but I wonder if Nvidia will implement this as a part of Ansel?

 

To those who didn't know, Ansel is basically a screenshot function. Unlike screenshot though, it can freeze in-game time to let you set up the camera correctly before taking the picture. What I'm thinking is that the GPU can keep DXR disabled when I'm adjusting the camera, but when I click the "snap" button it could render my screenshot with full DXR. At that point a SLOW card is still fine, I can wait for that.

[Jito463]

Not terribly surprising, to be honest.  If Nvidia wants to increase the number of developers utilizing their RTX implementation, then they need to increase the number of cards capable of running it.  Their older cards are already capable of RT (via DX12), so it only makes sense that they'd want a light version of their proprietary RTX, to draw away developers from using the hardware agnostic DXR.

[Pachyderm]

https://www.nvidia.com/en-us/geforce/news/geforce-gtx-ray-tracing-coming-soon/

 

That's right -- you'll soon be able to bork cripple your fps by enabling those sweet, sweet rays on your high end GTX Pascal and Turing based cards. But how did you ever live without it?

 

Here's my favorite quote from the announcement of Nvidia's site:

Quote

GeForce GTX gamers will have an opportunity to use ray tracing at lower RT quality settings and resolutions, while GeForce RTX users will experience up to 2-3x faster performance thanks to the dedicated RT Cores on their GPUs, enabling the use of higher-quality settings and resolutions at higher framerates.

 

Is it a coincidence that Nvidia waited until Linus was on vacation to announce this? I think not. Still looking forward to WAN show on Friday.

 

[Jurrunio]

too late

 

 

[Cyracus]

Hey some people need that 480p ray traced goodness on the 1080s they picked up used

[Trik'Stari]

1 hour ago, RejZoR said:

So, technically I could play BF5 with GTX 1080Ti and ray tracing enabled. I missed watching slideshows in recent 3DMarks that run too well. This sure as hell won't lol

The problem there is you'd be playing Battlefield 5.

 

And no one, should be playing Battlefield 5. DICE completely fumbled this game chasing the arcade shooting and battle royale craze.

 

And no one should reward that behavior.

[Derangel]

1 hour ago, Jito463 said:

Not terribly surprising, to be honest.  If Nvidia wants to increase the number of developers utilizing their RTX implementation, then they need to increase the number of cards capable of running it.  Their older cards are already capable of RT (via DX12), so it only makes sense that they'd want a light version of their proprietary RTX, to draw away developers from using the hardware agnostic DXR.

RTX is built off of DXR. According to Gamers Nexus this is basically Nvidia “flipping a switch” in their drivers to enable DXR support on non-RTX cards.

[Billy Pilgrim]

3 hours ago, randomhkkid said:

With AMD incoming with DXR support

did I miss something?

[BananaInSandals]

One more reason to tell my teammates why I suck/screwed up. Instead of saying "I lagged", now it's "I turned on RTX on my 1060"

[williamcll]

Would it work on the 970M?

[Bcat00]

Oh boy if I was a animation artist right now I be leaping with joy.

 

this is obviously aimed at the professional segment

[Syntaxvgm]

9 minutes ago, williamcll said:

Would it work on the 970M?

that's maxwell. 

[aezakmi]

And as always the brainwashed fanboys will buy it no matter the cost/performance ratio.

[dgsddfgdfhgs]

3 hours ago, randomhkkid said:

driver in April DXR capabilities will be enabled on non-RTX cards

so  another promising news that AMD supports RTX.

it even have shorter lifespan than g-sync

[Jito463]

3 hours ago, Derangel said:

RTX is built off of DXR.

Except that RTX is a proprietary implementation, like most everything that Nvidia does.

6 hours ago, randomhkkid said:

Starting with a driver in April DXR capabilities will be enabled on non-RTX cards from the current and previous generation.

However, I admittedly misread this line and thought it said that RTX was being enabled on the listed cards.

[Derangel]

55 minutes ago, Jito463 said:

Except that RTX is a proprietary implementation, like most everything that Nvidia does.

However, I admittedly misread this line and thought it said that RTX was being enabled on the listed cards.

RTX is ray-tracing processed via the tensor cores. Both DXR and Vulkan ray-tracing can use the tensor cores. The proprietary implementation of the tech likely has more to do with the use and optimization of the tensor cores as both BFV and Metro use DXR.

[Mira Yurizaki]

5 hours ago, Derangel said:

RTX is built off of DXR. According to Gamers Nexus this is basically Nvidia “flipping a switch” in their drivers to enable DXR support on non-RTX cards.

That doesn't seem to make sense when there are DXR demos that exist already that can run on non-RTX cards, as I pointed out earlier.

[dgsddfgdfhgs]

Nvidia dont care about Maxwell anymore

[ne0tic]

WHAT?