From dbf4cef0e03ba1342f451df07f26e97b6814298c Mon Sep 17 00:00:00 2001
From: prr <unknown>
Date: Wed, 4 Dec 2019 17:42:18 -0800
Subject: [PATCH] 8214481: freetype path does not disable TrueType hinting with
 AA+FM hints Reviewed-by: serb, psadhukhan

---
 .../share/native/libfontmanager/freetypeScaler.c      | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/java.desktop/share/native/libfontmanager/freetypeScaler.c b/src/java.desktop/share/native/libfontmanager/freetypeScaler.c
index ac60a06da6..f5f7d2f280 100644
--- a/src/java.desktop/share/native/libfontmanager/freetypeScaler.c
+++ b/src/java.desktop/share/native/libfontmanager/freetypeScaler.c
@@ -859,6 +859,17 @@ static jlong
         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;
     }
-- 
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