Details
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Type:
Bug
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Status: Resolved
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Priority:
Major
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Resolution: Fixed
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Affects Version/s: 6.3
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Fix Version/s: 6.3.1
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Component/s: Font Engine
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Labels:None
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Environment:PRO
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Support Case References:Support Case 14302:- https://icesoft.my.salesforce.com/5000g00001rMWpo
Description
A client has submitted a sample file that uses fonts that require font hinting. The are sometimes seeing glyphs that are rendered with black spots.
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This appears to have been a bug since the first release of font hinting. The Interpreter class has a few static data stores which work OK when only one font is being read at at time. However if one more threads are loading font data we can get in a situation where the cache data is in an incorrect state for the given font.
I've refactored the Interpreter to avoid the static caches and touched a few other constructs that were suspect.
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Patrick Corless
added a comment - This appears to have been a bug since the first release of font hinting. The Interpreter class has a few static data stores which work OK when only one font is being read at at time. However if one more threads are loading font data we can get in a situation where the cache data is in an incorrect state for the given font.
I've refactored the Interpreter to avoid the static caches and touched a few other constructs that were suspect.
Marking as fixed.