The section explained the VAE's channel count, the autogrow mismatch and the mask-size
measurements before saying where the example was. Keep what a reader needs: the model is
supported, transparency is inpainted too, and here is how to point it at your own picture.
The workflow's own note gets the same treatment.
LanPaint runs on Qwen-Image 2.1 unchanged: it is a rectified-flow model, so the
existing Flux/Qwen-Image conversions apply. Example_31 uses a text-to-image render
of its own model as the before/after, generated with a transparent background, and
keeps the inpainting mask in a separate greyscale file rather than in the picture's
alpha - 2.1's alpha channel means transparency, so overloading it would make the
two indistinguishable.
The transparency is carried into the latent and edited along with the pixels: the
2.1 VAE is 4-in/4-out (encoder.conv1 takes 4 channels, the decoder head emits 4),
and LoadImage's MASK output re-attaches through Join Image With Alpha, since that
mask is already 1 - alpha. The rebuilt sole grows past the old outline, so the
alpha in that region is generated rather than copied.
LanPaint_ImageDecode now matches the decoded channels to the source image: the 2.1
VAE always emits a 4th channel, which the merge could not broadcast. It keeps the
input's channel count, so an RGBA source comes back RGBA and an RGB source still
comes back RGB.
scraed