Artifacts in lower portion of image when generating images of size 1024x1024

leejet / stable-diffusion.cpp

Stable Diffusion in pure C/C++

MIT License

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Artifacts in lower portion of image when generating images of size 1024x1024 #187

Open phudtran opened 4 months ago

phudtran commented 4 months ago

Tried with different models (SDXL, SD1.5, etc) Only setting that reproduced the issue was resolution.

Known issue when decoding latents for image sizes larger than 512x512

Example

phudtran commented 4 months ago

Issue goes away when using taesd. Also need to test if the vae fix helps.

leejet commented 4 months ago

Please try the latest code and see if the issue persists.

phudtran commented 4 months ago

I'm still seeing it with the latest code. It could be a metal only issue. Will try on Cuda and report back.

FSSRepo commented 3 months ago

I'm still seeing it with the latest code. It could be a metal only issue. Will try on Cuda and report back.

You should have mentioned what was happening with the metal backend, as that doesn't happen with the cuda and cpu backend. Furthermore, the metal backend presents many known issues documented in the ggml repository, yet none of those maintaining that backend seem to give it importance