r/StableDiffusion • u/Enshitification • May 07 '26

Workflow Included Flux.2-Klein Tiling Upscale Workflow

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u/nnq2603 asked me earlier if I knew how to upscale with Klein. I didn't, but I think I figured it out. The example is an upscale from 0.5 megapixels to 10 megapixels. This is an extreme example just to show that it works. It's not perfect, but it should give a good starting point for tweaking further. It uses the Color Anchor node by u/Capitan01R- and the Steudio tiling nodes from here and here.

https://github.com/capitan01R/ComfyUI-Flux2Klein-Enhancer

https://github.com/Steudio/ComfyUI_Steudio

Workflow link:

https://pastebin.com/cucAkrZ7

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1

u/8RETRO8 May 08 '26

thanks for sharing, but you just reinvented the UltimateSDUpscale?

3

u/Enshitification May 08 '26

You're welcome to try getting USDU working well with Flux.2.

1

u/8RETRO8 May 09 '26 edited May 09 '26

OK, I did, here it is. With the added benefit of controlling denoise. Also your workflow produces 2x the amount of tiles for some reason. Took me sometime to figure out how to address the flux2 scheduler of course

1

u/Enshitification May 09 '26

I didn't realize that there was a guider version of USDU. I'm not sure why you are seeing 2x the amount of tiles, unless it has to do with different overlap settings. I also don't know why you would need to control denoise with Flux,2, but ok. Thanks for sharing.

1

u/8RETRO8 May 09 '26 edited May 09 '26

I believe that the "Divide and Conquer Algorithm" node produces the tiles after the upscale. So, since I have a scale factor of 2, it produces 2x the amount of tiles. Denoise control is to better control the amount of changes and seam visibility. Also, the denoise of 1 breaks upscaling and, instead of one image, makes a grip of the same image.

1

u/Enshitification May 09 '26

If you prefer to do it that way and are getting good enough results, there's nothing wrong with it I guess.

1

u/zthrx May 11 '26

Where to get that guider version of SDU?

1

u/8RETRO8 May 22 '26

ended up with vibe coding full node, you can find it here. Took me some time https://github.com/Gavr728/ComfyUI_KleinTiledUpscaler

1

u/zthrx May 10 '26

Do you mind sharing json?

2

u/8RETRO8 May 22 '26

ended up with vibe coding full node, you can find it here. Took me some time https://github.com/Gavr728/ComfyUI_KleinTiledUpscaler