AMD: Navi Speculation, Rumours and Discussion [2019-2020]
- Thread starter Kaotik
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Raytracing seems to be as much of a parallellable task as rasterization, so I'd bet that in the end what counts is throuhgput, or units x clock speed.
Otherwise the lower clocked 2080 Ti would suffer in comparison to the 2080.
But I guess in a comparison of two GPUs with equivalent architecture and same RT throughput / bandwidth / etc., but one is wider but the other is clocked faster, the later may have some advantage due to higher clocked caches. That was Cerny's point yesterday, at least.
I think between wide and slow vs. narrow and fast, the better RT will end up coming of the one with higher memory bandwith, aka Xboy
Bondrewd
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Yeah, kinda.
Think of Sapphire Toxic kind of SKU.
And even higher on LN2.
Bondrewd
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Obviously, but we're talking exotic SKUs, not exotic cooling.
We may see AMD RT in action today here: https://mixer.com/DirectX
^^^^^^^ that would be wonderful!
Yesterday I heard from other devs that some good info will be released from the DirectX Developer Day with "DXR Tier 1.1 Running on RDNA2 Hardware – Dave Oldcorn (AMD)".
DavidGraham
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Just a catch phrase for hardware that supports: Texture Space Shading, VRS , Ray Tracing and Mesh Shaders. DirectML is omitted for now.
Quite a bad demo. Looks like they wanted to show off with all these reflections.
Nice write up on the features https://devblogs.microsoft.com/directx/announcing-directx-12-ultimate/
Bondrewd
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DirectStorage (the newest thing so far) is also not there.
thatsthepoint.png
Oh ... now I get it. This is actually very cool. Gpu can figure out which texels will be sampled without actually sampling them, so a virtual texturing system can then proceed to only load the exact tiles that are needed into vram. On top of that you can use it the same way in texture space shading to only shade the parts of the texture that are necessary.
https://devblogs.microsoft.com/dire...edback-some-useful-once-hidden-data-unlocked/
https://devblogs.microsoft.com/dire...edback-some-useful-once-hidden-data-unlocked/
DavidGraham
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Seems AMD is interested in doing RT with simple shaders, preferably one single shader using DXR1.1, as opposed to the many shader approach in DXR1.0, AMD says single shader provides better performance. Microsoft says both approaches have their uses, advantages and disadvantages.Oh no... more shiny robots
Artistically this demo might be quite garish, but at least it does the job of showing off the kind of things only RT can do. In that reggard, I think that was the most un-umbiguous demos of that thus far. Like: Yes, the whole fucking screen can be covered with reflective surfaces of both specular and glossy variety and things will look right. That means artists can throw watever content at this and you will get proper reflections there.
I'd rather get ugly but didactic demos than "what am I supposed to see here" ones like Metro's.
I'd rather get ugly but didactic demos than "what am I supposed to see here" ones like Metro's.
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