alternate CAS as found in SweetFX feasible to avoid RCAS artifacts?

aufkrawall commented

2024-08-02 10:21:06 +00:00

(Migrated from github.com)

When applying RCAS with high strength, it can cause weird artifacts (as described in Config.md). The CAS shader in ReShade SweetFX can apply quite strong sharpen with e.g. a strength of 2.0, but doesn't seem to have this issue. Which is why I wonder if applying CAS like that could be feasible inside OptiScaler too?

cdozdil commented

2024-08-02 11:13:20 +00:00

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Hi,

Funny thing is we started with CAS, because of these artifacts I have adapted RCAS (which prevented these issues.

Need to update issues page 😊

Hi, Funny thing is we started with CAS, because of these artifacts I have adapted RCAS (which prevented these issues. Need to update issues page 😊

aufkrawall commented

2024-08-02 11:24:16 +00:00

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With high RCAS sharpen strength, I'm getting weird bright image areas:

Seems to be more distinct with FSR 3.1 than with XeSS. This doesn't occur with the SweetFX shader via ReShade.

With high RCAS sharpen strength, I'm getting weird bright image areas: ![witcher3_2024_08_02_12_13_57_446](https://github.com/user-attachments/assets/5aa951ef-e4c2-4994-9749-e69dd498c706) Seems to be more distinct with FSR 3.1 than with XeSS. This doesn't occur with the SweetFX shader via ReShade.

cdozdil commented

2024-08-02 11:48:44 +00:00

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I have used this shader as referance, could you check if it's producing similar issues?

https://github.com/RdenBlaauwen/RCAS-for-ReShade/blob/main/RCAS.fx

I have used this shader as referance, could you check if it's producing similar issues? https://github.com/RdenBlaauwen/RCAS-for-ReShade/blob/main/RCAS.fx

aufkrawall commented

2024-08-02 12:47:57 +00:00

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The issue does not occur with that RCAS shader used in ReShade.

cdozdil commented

2024-08-02 18:03:28 +00:00

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Hi,

Could you try this build?

nvngx.zip

Hi, Could you try this build? [nvngx.zip](https://github.com/user-attachments/files/16473727/nvngx.zip)

aufkrawall commented

2024-08-02 21:02:15 +00:00

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It doesn't seem to occur with this build, but the sharpen effectiveness of RCAS also seems to be reduced to (almost?) non-existent.

cdozdil commented

2024-08-03 07:48:22 +00:00

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Hi,

I just checked on some games on my notebook, RCAS seems to be working?

Hi, I just checked on some games on my notebook, RCAS seems to be working?

aufkrawall commented

2024-08-03 08:40:39 +00:00

(Migrated from github.com)

Yeah, however with that new build, it looks way softer than RCAS via ReShade at the same strength:

Yeah, however with that new build, it looks way softer than RCAS via ReShade at the same strength: ![witcher3_2024_08_03_10_36_03_447](https://github.com/user-attachments/assets/de034436-52e7-480f-9238-3a2cd21c1b81) ![witcher3_2024_08_03_10_36_26_858](https://github.com/user-attachments/assets/a14dadda-65fb-4f7e-8348-46e8e5b1b23b)

cdozdil commented

2024-08-03 09:59:43 +00:00

(Migrated from github.com)

Hi,

Thanks for pointing this out, I found a mistake on my shader code (multiplied with denoise value twice).
Could you check if this build fixes the issue?

nvngx.zip

Hi, Thanks for pointing this out, I found a mistake on my shader code (multiplied with denoise value twice). Could you check if this build fixes the issue? [nvngx.zip](https://github.com/user-attachments/files/16479016/nvngx.zip)

aufkrawall commented

2024-08-03 14:46:19 +00:00

(Migrated from github.com)

Thanks! They are closer to each other now (I also forgot to re-enable the denoiser in the ReShade shader for the previous screenshots...), but I think ReShade is still a tad sharper?

The ReShade shader also allows to enter a sharpen strength of up to 1.3 (I used 1.0 though), maybe that would be the cheapest way to get to higher sharpen strength in OptiScaler? 🐸 As FSR 3.1 also is quite soft.

Thanks! They are closer to each other now (I also forgot to re-enable the denoiser in the ReShade shader for the previous screenshots...), but I think ReShade is still a tad sharper? ![witcher3_2024_08_03_16_36_21_731](https://github.com/user-attachments/assets/235b524e-c80c-4741-bf17-08c92bf801b3) ![witcher3_2024_08_03_16_37_22_772](https://github.com/user-attachments/assets/b30fadc0-d56a-4271-bf1d-8d77fa3e6ad7) The ReShade shader also allows to enter a sharpen strength of up to 1.3 (I used 1.0 though), maybe that would be the cheapest way to get to higher sharpen strength in OptiScaler? 🐸 As FSR 3.1 also is quite soft.

cdozdil commented

2024-08-03 14:50:12 +00:00

(Migrated from github.com)

Yeah, that was in my mind too. I will check and adapt it later today 👍🏻

❤️ 2

cdozdil commented

2024-08-03 20:44:34 +00:00

(Migrated from github.com)

Ok, prepared another test build.

nvngx.zip

Ok, prepared another test build. [nvngx.zip](https://github.com/user-attachments/files/16482852/nvngx.zip)

👍 1

aufkrawall commented

2024-08-04 10:50:00 +00:00

(Migrated from github.com)

Thanks, it definitely works now to get higher sharpen without the previous artifacts! :)
If I were nitpicky, I'd say the shader via ReShade still sharpens the image a bit more evenly. But you probably have far more exciting stuff on your agenda. Thanks again!

Thanks, it definitely works now to get higher sharpen without the previous artifacts! :) If I were nitpicky, I'd say the shader via ReShade still sharpens the image a bit more evenly. But you probably have far more exciting stuff on your agenda. Thanks again!

👍 1

cdozdil commented

2024-08-04 11:01:37 +00:00

(Migrated from github.com)

Thanks for helping me to sort out this issue 👍

❤️ 1

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alternate CAS as found in SweetFX feasible to avoid RCAS artifacts? #32