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  1. JDK
  2. JDK-8220231

Cache HarfBuzz face object for same font's text layout calls

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    • Subcomponent:
      2d
    • Resolved In Build:
      b18

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        Description

        Currently each text layout operation includes the creation of Harfbuzz face object (hb_face_t). By creating it
        only once per Font2D instance, a notable (couple of times) speedup of repeated layout operations for the same font can be achieved.
        Harfbuzz face object is claimed to be 'threadsafe beyond construction'
        (https://lists.freedesktop.org/archives/harfbuzz/2009-August/000359.html), so there shouldn't be a problem with
        concurrent layout operations.

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                Assignee:
                dbatrak Dmitry Batrak
                Reporter:
                dbatrak Dmitry Batrak
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