jpgd::jpeg_decoder::check_sample_buf_ofs(int) const: Assertion `ofs >= 0' failed.

[arpu]

Hey,

get this error on wolf3d Avatars (https://readyplayer.me/)

toktx --t2 --2d --genmipmap --nowarn --bcmp --clevel 1 --qlevel 192 --srgb -- /tmp/gltfpack-pufIhl.ktx2 /tmp/gltfpack-DCgM4j.jpg => 0
toktx --t2 --2d --genmipmap --nowarn --bcmp --clevel 1 --qlevel 192 --normal_map --linear -- /tmp/gltfpack-eEVzpk.ktx2 /tmp/gltfpack-m5JxEn.jpg => 0
toktx: /home/arpu/Work/githubsources/KTX-Software/lib/basisu/encoder/jpgd.h:275: int jpgd::jpeg_decoder::check_sample_buf_ofs(int) const: Assertion `ofs >= 0' failed.
toktx --t2 --2d --genmipmap --nowarn --resize 4x4 --bcmp --clevel 1 --qlevel 192 --srgb -- /tmp/gltfpack-tloSko.ktx2 /tmp/gltfpack-uq23Hk.jpg => 134
Warning: unable to encode image 2, skipping

using KTX-Software master and meshoptimizer master

[arpu]

the problematic file is body_texture.jpg

toktx --t2 --2d --genmipmap --nowarn --bcmp --clevel 1 --qlevel 192 --normal_map --linear /home/arpu/Downloads/wolf/boots_Gloss_01.ktx2 /home/arpu/Downloads/wolf/body_texture.jpg -vv
toktx: /home/arpu/Work/githubsources/KTX-Software/lib/basisu/encoder/jpgd.h:275: int jpgd::jpeg_decoder::check_sample_buf_ofs(int) const: Assertion `ofs >= 0' failed.
[1]    1691918 IOT instruction (core dumped)  toktx --t2 --2d --genmipmap --nowarn --bcmp --clevel 1 --qlevel 192  --linear

files attached

[MarkCallow]

The attached file shows up as black in my web browser when I click the image. Is that correct? Since it is a 1x1 image its kind of hard to tell. It's barely visible in the issue comment. Finder shows it as brown.

[arpu]

yes this is correct

[arpu]

anything i can provide to fix this?

[MarkCallow]

No. It's a problem with the jpeg decoder I am using which comes from the basis_universal repo. I've filed (issue 229)[https://github.com/BinomialLLC/basis_universal/issues/229] over there.

You can use the Release configuration instead of Debug so there is no assert. The result appears to be valid.

[arpu]

thx, @MarkCallow with the Release Build i get a valid viewable glb now!

[arpu]

this should be fixed with new basisu release 1.16