- Jun 2, 2020
As I said, RT hardware step alone doesn't produce anything palatable, you can't disable everything else and get it rendered, you could, perhaps, disable some of the "other steps".
That's curious, ignoring what wccf is, but far from obvious, what it is being tested to begin with.
It's the demo that was first shown on Vega GPU, with no hardware RT being used, I'm puzzled if it is used in this demo at all.
The hardware intersection bit I'm referring to, is about "up to" number, of NV claimed "up to 10 billion intersection" for Ampere (which is 10 times more than Tesla ) per second, vs AMD's... 380 billion on XSeX. (again: up to)
Microsoft has said that the XSX can do 380 billion intersections per second. "RDNA 2 fully supports the latest DXR Tier 1.1 standard, and similar to the Turing RT core, it accelerates the creation of the so-called BVH structures required to accurately map ray traversal and intersections, tested...www.neogaf.com
Fishiness of "up to" aside (e.g. imagine "it's that many if all structures fit into LL1 cache") "It is largely not about intersections at all" explains, why we do not see even remotely as major RT perf jump as it is claimed.
Last, but not least, how many Crytek RT engine based games are out there? Not even one, right?
They gave a breakdown of the specs. Besides, if as you suggest there no was RT in the demo at all, AMD would win anyway because they have better raster performance, no?
Note: This product comes with a custom EULA. You will find it in your download folder. We are delighted to share ‘Neon Noir,’ a free ray tracing benchmark based on the ray tracing demo of the same name, which was made available as a video during GDC 2019. Neon Noir was developed on a bespoke...
You can find the details here. I personally don't care to read it.
DF did their own video on it anwyay. The RTX cards clearly beat the RDNA cards and again if you look at the WCCF video, the new RTX cards beat the RDNA2 cards.
I'm not entirely what you're criticizing about the ray tracing demo to be honest. In the DF video they explain that it's using "SVOGI" or some sort of method of using a simplified version of the geometry to generate ray tracing information (which is not as accurate as "proper" ray tracing) and then adds additional ray tracing info on top for moving objects.
Either way, the NVIDIA cards seem to win.
I think I sort of get what you're trying to say but the whole "in theory AMD should be better" counts for very little until AMD is actually (consistently) better.