ICEpdf
  1. ICEpdf
  2. PDF-1242

Font hinting initialization resulting in some glyph rendering artifacts.

          Details

          • Type: Bug Bug
          • Status: Resolved
          • Priority: Major Major
          • Resolution: Fixed
          • Affects Version/s: 6.3
          • Fix Version/s: 6.3.1
          • Component/s: Font Engine
          • Labels:
            None
          • Environment:
            PRO

            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.

              Activity

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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.

              Show
              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.
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              Patrick Corless added a comment -

              Marking as fixed.

              Show
              Patrick Corless added a comment - Marking as fixed.

                People

                • Assignee:
                  Patrick Corless
                  Reporter:
                  Patrick Corless
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                  Dates

                  • Created:
                    Updated:
                    Resolved: