Text anti-aliasing hint ANTIALIAS_ON not where the font contains embedded bitmaps

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    • Type: Bug
    • Resolution: Fixed
    • Priority: P2
    • 6
    • Affects Version/s: 6
    • Component/s: client-libs
    • 2d
    • b39
    • 6
    • b45
    • generic
    • windows_xp
    • Verified

      Text anti-aliasing hints for LCD_HRGB and ANTIALIAS_ON not enabled for some fonts/sizes on WinXP.

      For certain fonts and sizes on WinXP, the Text RenderingHints:

      VALUE_TEXT_ANTIALIAS_ON
      VALUE_TEXT_ANTIALIAS_LCD_HBGR

      become disabled, and no anti-aliasing is performed on a particular font. Examining the font with a magnifier application (at these sizes) shows no grey pixels (for ANTIALIAS_ON) or no colorized sub-pixels (for LCD_HBGR). Pixels will only be black and white.

      Here are some observed TrueType fonts where the bug occurs on WinXP. The bugs seems to only occur within the size range 11 - 21.

      Garamond, Albany, Andale Sans, Broadway, Cumberland, Palace Script, Sheffield, Thorndale, and some others.

      - Was not able to see this problem on other platforms.
      - The bug was introduced with 1.6.0-b39

      Steps to reproduce
      ==================
      1) Use build 1.6.0-b39 or later
      2) Launch Font2DTest and set Antialias Setting to "ON" or "LCD_HBGR"
      3) Select one of the fonts from the list above, say Garamond
      4) Set the font size to 11
      5) Observe that the characters will show no anti-aliasing, only black and white


      ###@###.### 2005-06-21 01:40:12 GMT

            Assignee:
            Philip Race
            Reporter:
            Rick Reynaga (Inactive)
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              Updated:
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