We Tested Intel's XeSS in Shadow of the Tomb Raider XeSS on Multiple GPUs
Benefits Pascal and later, RDNA 2 and Arc — most of the time
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Intel XeSS anti-aliasing discussion
- Thread starter BRiT
- Start date
DegustatoR
Legend
RPM is only for FP16 in these two I believe?
Vega 64 is the 14nm one, Radeon VII is the 7nm one.
At least for RDNA, I think not, but I'm not sure
They do but the performance on the low end RDNA2 cards is troubling when thinking about the Series S. Though we have to also remember that with this running on basically everything, I doubt it is optimized for any dp4a GPUs outside of Intel's.
We have to see how the non SM6.4 DP4a kernel performs on Intel igpu's to get a better indication of how it may perform on XSS.
The XS would get that version if intel and ms work on bringing it to the GDK.
Much like how amd worked to optimize FSR2.0 for it.
I think all RDNA/RDNA2 GPUs except for Navi10 also have INT8/INT4 support and Radeon VII/Vega20 has it as well.
I think so, not sure about the PS5
Sorry to disappoint you...
Let's open RDNA1 ISA and vega7nm(Radeon VII)
But in RDNA1...
Oh, I'm sorry. I read it wrong, you meant int4/8, not dot4
Then you're right, all current gpu architectures support these instructions
BUT, xess doesn't use "regular" int, it uses dot4(4-dimensional int, https://learn.microsoft.com/en-us/w...lsl-shader-model-6-4-features-for-direct3d-12)
And they are supported in AMD GPUs only in RDNA 2 and Vega 7nm
Then you're right, all current gpu architectures support these instructions
BUT, xess doesn't use "regular" int, it uses dot4(4-dimensional int, https://learn.microsoft.com/en-us/w...lsl-shader-model-6-4-features-for-direct3d-12)
And they are supported in AMD GPUs only in RDNA 2 and Vega 7nm
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Yeah, that's because it doesn't exist in Navi10, which came out first. I'm guessing it was borked since Navi10 was a buggy mess in general and both Navi12 (GFX1011) and Navi14 (GFX1012) both support it.
https://llvm.org/docs/AMDGPU/AMDGPUAsmGFX1011.html
As for semicustom parts, it's too bad the PS5 doesn't support it. Still, I'm interested if XeSS might perform well on the Xbox.
I meant dot4 INT8 and dot8 INT4, indeed
Honestly, XeSS is already a lot faster than I thought. The last gpgpu based ml temporal upscale method I can recall is Facebook's paper from 2020, which requires 24.42ms to output to 1080p on Titan V and they don't even release the figures for 4k (though this is for 16x supersampling). At least XeSS is still usable and provides much better results than hand-crafted heuristics like fsr 2.0 (that is, if we ignore the transparency jitter issue)
DegustatoR
Legend
Death Stranding DC is the new champ for upscaling options comparisons. No competition
XeSS is again the softest here when comparing them all at default sharpness at least (which you can adjust for DLSS and FSR2). Intel really should've added user controllable sharpening from the start.
Performance is about the same as in SoTTR I'd say here on a 3080.
That is DLSS>FSR2>XeSS>Native+TAA
But none of the upscaling options load 3080 to 100% per GPU monitoring.
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Xboxes are full fat RDNA2 (sans I$), it goes all the way down to int4 @ 8:1 FP32
Only Xbox consoles.
