Could someone please explain what the Upscaling using AMD FidelityFX CAS setting does?

Andro

Andro
"AMD FidelityFX Contrast Adaptive Sharpening (CAS) provides a mixed ability to sharpen and optionally scale an image. The algorithm adjusts the amount of sharpening per pixel to target an even level of sharpness across the image."

So it's upscaling like DLSS.

Speccy said:
Thanks.

I have an Intel processor and Nvidia GPU, is this setting of any use to me?
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"More importantly, the technology can be enabled on almost any hardware from any vendor, including Nvidia and Intel."
 

Altarf

Altarf
I have tested this feature, but it doesnt bring the benefit it should. There is no difference at 4k with or without Fidelity FX enabled. I dont understand why!? It should work similar to DLSS and produce a lot more fps. The CAS difference i can see, it's working. Have anyone tested this as well and have made the same experience?
 

Vardaugas

Vardaugas
Altarf said:
I have tested this feature, but it doesnt bring the benefit it should. There is no difference at 4k with or without Fidelity FX enabled. I dont understand why!? It should work similar to DLSS and produce a lot more fps. The CAS difference i can see, it's working. Have anyone tested this as well and have made the same experience?
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You reduce super sampling below 1 for performance and then fix the blur with CAS. For example, if I use 0.75 supersampling with full CAS, I go from 38 fps to 53 fps and still have a mostly acceptable picture instead of a blurry mess.
 

Northpin

Northpin
Speccy said:
Thanks.

I have an Intel processor and Nvidia GPU, is this setting of any use to me?
Click to expand...

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I'm using it meself too, 0.75 supersampling and Fidelity FX CAS at about 40-45%
 

Altarf

Altarf
Vardaugas said:
You reduce super sampling below 1 for performance and then fix the blur with CAS. For example, if I use 0.75 supersampling with full CAS, I go from 38 fps to 53 fps and still have a mostly acceptable picture instead of a blurry mess.
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This makes no sense to me! It usally should reduce a resolution internally and upscale it again which should bring fps similar to DLSS from nVidia. But in this case you say you reduce your resolution your own and the feature avoid a bad picture quality? In all the reviews i've read about FSR it's like i've explained. So it should give a performance boost at 4k If you enable the FSR but it doesnt work...
 

hunvagy

hunvagy
Altarf said:
This makes no sense to me! It usally should reduce a resolution internally and upscale it again which should bring fps similar to DLSS from nVidia. But in this case you say you reduce your resolution your own and the feature avoid a bad picture quality? In all the reviews i've read about FSR it's like i've explained. So it should give a performance boost at 4k If you enable the FSR but it doesnt work...
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Yes, but this is not FSR, nor is it DLSS.
 

Altarf

Altarf
Ah ok so it's just CAS like AMDs RIS and nVidias NIS to sharpen the image? Ok sorry so misunderstood this feature completly. Thought the Fidelity FX says always the same. So i dont need this feature. Ist there no plan to integrate FSR or DLSS? That would be nice for Odyssey and it's performance issues....
 

ebbrell

ebbrell
Correct, its not FSR
FsR is the latest solution from AMD which also works on Nvidia.

This CAS is predominantly for image sharpening it can boost a lower rendered image and upscale. But it's not that good, it is technology before FSR.
 

Altarf

Altarf
ebbrell said:
Correct, its not FSR
FsR is the latest solution from AMD which also works on Nvidia.

This CAS is predominantly for image sharpening it can boost a lower rendered image and upscale. But it's not that good, it is technology before FSR.
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Yeah i've got it now. Would be nice If FDEV can say something about FSR or DLSS but i think we have to live with bad performance in Odyssey :-(
 

ferus

ferus
Vardaugas said:
You reduce super sampling below 1 for performance and then fix the blur with CAS. For example, if I use 0.75 supersampling with full CAS, I go from 38 fps to 53 fps and still have a mostly acceptable picture instead of a blurry mess.
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That actually sounds fair, I will give this a try.
Pity I have to resort to this on a RTX 2060 if I want more than 40 FPS in concourse and settlements.
 

Altarf

Altarf
ferus said:
That actually sounds fair, I will give this a try.
Pity I have to resort to this on a RTX 2060 if I want more than 40 FPS in concourse and settlements.
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It's not that fair as you think. CAS cant give a wonder after lowering a native resolution!
 

muhhy

muhhy
It would have been very nice if they had an Intro/explanation/demo to this feature for 15 minutes, instead of the crappy shared missions demo for the whole 2 hours in the Thursday stream, you know.
 
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