Author Topic: NVIDIA will bring Ray Tracing Support (DXR) to GTX 10 and 16 Series  (Read 620 times)

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JeGX

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DXR support on GTX 10 / 16 Series not before April 2019.

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When Microsoft first announced the DirectX Raytracing API just over a year ago, they set out a plan for essentially two tiers of hardware. The forward-looking plan (and long-term goal) was to get manufacturers to implement hardware features to accelerate raytracing. However in the shorter term, and owing to the fact that the API doesn't say how ray tracing should be implemented, DXR would also allow for software (compute shader) based solutions for GPUs that lack complete hardware acceleration. In fact, Microsoft had been using their own internally-developed fallback layer to allow them to develop the API and test against it internally, but past that they left it up to hardware vendors if they wanted to develop their own mechanisms for supporting DXR on pre-raytracing GPUs.

NVIDIA for their part has decided to go ahead with this, announcing that they will support DXR on many of their GeForce 10 (Pascal) and GeForce 16 (Turing GTX) series video cards. Specifically, the GeForce GTX 1060 6GB and higher, as well as the new GTX 1660 series video cards.

Now, as you might expect, raytracing performance on these cards is going to be much (much) slower than it is on NVIDIA's RTX series cards, all of which have hardware raytracing support via NVIDIA's RTX backend. NVIDIA's official numbers are that the RTX cards are 2-3x faster than the GTX cards, however this is going to be workload-dependent. Ultimately it's the game and the settings used that will determine just how much of an additional workload raytracing will place on a GTX card.

Complete story: https://www.anandtech.com/show/14100/nvidia-april-driver-to-support-ray-tracing-on-pascal-gpus-dxr-support-in-unity-and-unreal