OpenJDK / amber / amber
changeset 59278:002b849de829
8214481: freetype path does not disable TrueType hinting with AA+FM hints
Reviewed-by: serb, psadhukhan
| author | prr |
|---|---|
| date | Wed, 04 Dec 2019 17:42:18 -0800 |
| parents | a680d0981607 |
| children | 269d810313dc |
| files | src/java.desktop/share/native/libfontmanager/freetypeScaler.c |
| diffstat | 1 files changed, 11 insertions(+), 0 deletions(-) [+] |
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--- a/src/java.desktop/share/native/libfontmanager/freetypeScaler.c Wed Dec 04 17:41:03 2019 -0800 +++ b/src/java.desktop/share/native/libfontmanager/freetypeScaler.c Wed Dec 04 17:42:18 2019 -0800 @@ -857,6 +857,17 @@ return ptr_to_jlong(getNullGlyphImage()); } + /* + * When using Fractional metrics (linearly scaling advances) and + * greyscale antialiasing, disable hinting so that the glyph shapes + * are constant as size increases. This is good for animation as well + * as being compatible with what happened in earlier JDK versions + * which did not use freetype. + */ + if (context->aaType == TEXT_AA_ON && context->fmType == TEXT_FM_ON) { + renderFlags |= FT_LOAD_NO_HINTING; + } + if (!context->useSbits) { renderFlags |= FT_LOAD_NO_BITMAP; }