transformed_sweep and composite_colr_glyph sample images are flipped with fonttools 4.38.0

[danc86]

In requirements.txt there is currently fonttools==4.34.4 pinned, but I'm working on packaging this in nixpkgs and we have fonttools 4.38.0 there. When I run the tests, two sample images are failing because their outputs look different on the cairo and skia backends: transformed_sweep and composite_colr_glyph.

Expected:

Actual:

Expected:

Actual:

I confirmed that switching back to fonttools 4.34.4 fixes the test failures so it seems to be due to some change in fonttools.

You might know about this already, I guess it's (one of the) issues afflicting PR #146, if so I apologise for the extra noise.

[justvanrossum]

Thanks for the report! Yes, this is unfortunately a known issue, and no worries about the noise. If you'd see a quick way to fix this: I'm open to a PR.

[anthrotype]

a known issue

I'd be curious to know what exactly changed in fonttools that triggers this issue

[justvanrossum]

I'd be curious to know what exactly changed in fonttools that triggers this issue

Don't worry, it's an older change: blackrenderer just needs some attention.