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[varLib] omit optional COLR.VarIndexMap for identity mapping

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Fixes #2800
This commit is contained in:
Cosimo Lupo 2022-09-05 17:18:29 +01:00
parent 964df076e1
commit e4b3394a38
1 changed files with 4 additions and 1 deletions
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5
Lib/fontTools/varLib/__init__.py
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@ -722,8 +722,11 @@ def _add_COLR(font, model, master_fonts, axisTags, colr_layer_reuse=True):
if store:
mapping = store.optimize()
colr.VarStore = store
# don't add DeltaSetIndexMap for identity mapping
colr.VarIndexMap = None
varIdxes = [mapping[v] for v in merger.varIdxes]
colr.VarIndexMap = builder.buildDeltaSetIndexMap(varIdxes)
if any(i != varIdxes[i] for i in range(len(varIdxes))):
colr.VarIndexMap = builder.buildDeltaSetIndexMap(varIdxes)
def load_designspace(designspace):