animate-elem-15-t

83.6% of the ink matches
fail - measured over 39403 pixels carrying ink in either image.
These results are not meaningful. This check renders a single static frame, and nothing in a test document records which moment in time its reference image was captured at - so a correct SMIL implementation and a broken one are equally likely to mismatch. Animation behaviour is covered by dedicated unit tests instead; see ctgnz/foxglove#208 for a real measurement methodology, still to be worked out.

W3C reference (context only, see #200)

W3C reference (context only, see #200)

Foxglove

Foxglove

Difference

Difference
In the difference panel, red marks pixels that differ beyond tolerance and grey marks matching content. The tinted band, where present, is the <text id="revision"> legend every test carries: it renders in a fallback font this library cannot match, so it is excluded from the comparison entirely rather than failing every test.

What this test checks

The blue rectangle should animate its width at a constant speed so that the right edge of the rectangle lines up with the ruler line at the indicated times.

View the source document at W3C