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Raytracing without RTX: Nvidia Pascal receives DXR support via driver
Nvidia announced that it will bring support for Microsoft's DXR-API (the API responsible for real-time ray tracing), to older GPUs. This invokes the 10-series and recently introduced 16-series GPUs series.
The new driver thus makes it possible to use real-time raytracing in games via DXR as part of DirectX 12 without exclusive RT cores and thus on the traditional computing cores. However, with DXR effects enabled, performance will be significantly lower than Turing's counterparts with specialized RT cores - so the purpose remains to be seen. Also AMD could use DXR on its Radeon graphics cards, if supported by the driver. AMD has not yet released an official raytracing driver.
A new GeForce driver is due to be released in April, that one will add the compatibility. The Titan X, Titan V and Titan XP would also get supported. It is good to note that laptops with similar GPUs may also expect to get DX-R with the new driver, including the more economical Max-Q versions. Performance can be disappointing, NVIDIA mentions. Only very basic raytracing effects would work.
DLSS remains exclusively for Turing RTX
From now on Raytracing will no longer be available exclusively on GeForce RTX at Nvidia. But with DLSS (Deep Learning Super Sampling) it is different. The alternative AI-based antialiasing will continue to be provided only with the dedicated tensor cores of the RTX family, Nvidia said in the Q & A after the GDC presentation to media representatives.
At least theoretically, it would be possible to create a counterpart to the proprietary DLSS via the Microsoft API Windows Machine Learning (WinML) or DirectML. DirectML takes advantage of the unified compute units of GPUs, with which even Radeon graphics cards from AMD could offer such a function, as an AMD employee had already suggested in an interview.
So in short, people can enable DirectX Raytracing ( DXR ) on GeForce GTX 1060 6GB and higher graphics cards via a Game Ready Driver update, expected in April. DLSS, no bueno.
supported GPUs
Caesar
Senior Member
Posts: 1532
Joined: 2015-06-18
Senior Member
Posts: 1532
Joined: 2015-06-18
#5651716 Posted on: 03/19/2019 07:20 PM
NOTE:
Nvidia's Turing architecture includes a reworked pipeline that allows for concurrent FP (Floating point operations) and INT (integer operations) execution.
In the past, a lot of graphics work relied purely on FP calculations, but INT calculations are becoming increasingly common, particularly with ray tracing algorithms.
Depending on the game and the DXR implementation, Nvidia's data shows that the Turing architecture without its RT cores (which is what you'll get in the GTX 1660 Ti and GTX 1660) is still better than Pascal.
And depending on how much ray tracing is being done, Turing RTX 2080 may be anywhere from 1.3x-4.0x faster than a Pascal GTX 1080 Ti (and 1.6x-5.0x faster if DLSS OFF).
NOTE:
Nvidia's Turing architecture includes a reworked pipeline that allows for concurrent FP (Floating point operations) and INT (integer operations) execution.
In the past, a lot of graphics work relied purely on FP calculations, but INT calculations are becoming increasingly common, particularly with ray tracing algorithms.
Depending on the game and the DXR implementation, Nvidia's data shows that the Turing architecture without its RT cores (which is what you'll get in the GTX 1660 Ti and GTX 1660) is still better than Pascal.
And depending on how much ray tracing is being done, Turing RTX 2080 may be anywhere from 1.3x-4.0x faster than a Pascal GTX 1080 Ti (and 1.6x-5.0x faster if DLSS OFF).
jbscotchman
Senior Member
Posts: 5872
Joined: 2004-01-28
Senior Member
Posts: 5872
Joined: 2004-01-28
#5651722 Posted on: 03/19/2019 07:24 PM
Well this is surprising but good news. Definitely looking forward to see how the 16 series will benefit from this.
Well this is surprising but good news. Definitely looking forward to see how the 16 series will benefit from this.
Caesar
Senior Member
Posts: 1532
Joined: 2015-06-18
Senior Member
Posts: 1532
Joined: 2015-06-18
#5651731 Posted on: 03/19/2019 07:36 PM
Hi guru,
did you finally go with the Gtx1660 ventus?
Ray tracing coming soon.
Well this is surprising but good news. Definitely looking forward to see how the 16 series will benefit from this.
Hi guru,
did you finally go with the Gtx1660 ventus?
Ray tracing coming soon.
jbscotchman
Senior Member
Posts: 5872
Joined: 2004-01-28
Senior Member
Posts: 5872
Joined: 2004-01-28
#5651736 Posted on: 03/19/2019 07:49 PM
Hi guru,
did you finally go with the Gtx1660 ventus?
Ray tracing coming soon.
Yep. I'm hoping these new drivers unlock some of turing's power.
Hi guru,
did you finally go with the Gtx1660 ventus?
Ray tracing coming soon.
Yep. I'm hoping these new drivers unlock some of turing's power.
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Senior Member
Posts: 14614
Joined: 2014-07-21
Yes that's true, we shall see if it pulls them in... one thing though, RTX / DXR only runs under DX12 (win10 1809) afaik, so the devs playing around with it is like playing around with DX12... we aren't there yet, again. Sadly.
One other thing I just wondered, if RTX comes down and does make any sense on the lower end cards in terms of showing something playable, that could indeed be a feature added to the 1660TI... hard to be sure about that though.