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[varLib] Do not encode gvar deltas that are all zeroes

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Behdad Esfahbod 2017-04-03 18:04:26 +02:00
parent 33d57dc2c3
commit b572ae6c5b
1 changed files with 2 additions and 0 deletions
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2
Lib/fontTools/varLib/__init__.py
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@ -186,6 +186,8 @@ def _add_gvar(font, model, master_ttfs):
supports = model.supports supports = model.supports
assert len(deltas) == len(supports) assert len(deltas) == len(supports)
for i,(delta,support) in enumerate(zip(deltas[1:], supports[1:])): for i,(delta,support) in enumerate(zip(deltas[1:], supports[1:])):
if not delta:
continue
var = TupleVariation(support, delta) var = TupleVariation(support, delta)
gvar.variations[glyph].append(var) gvar.variations[glyph].append(var)