commit 1d6fa961d4a4787bf9444e2c0e42591236cfcab2
author Victoria Lease <violets@google.com> Thu Jul 26 15:50:40 2012 -0700
committer Victoria Lease <violets@google.com> Fri Jul 27 14:06:38 2012 -0700
tree 21018810259fbfb64d75dc064282f6ce1a4932dd
parent ec1ad08b13b4034af0ae2e65da7803250a7eece3

Reduce embolden effect. DO NOT MERGE

Cherry-pick of Iec1c478171e33751be1cddbaae6a8ec30bb6cbab

Certain CJK glyphs become essentially unreadable when emboldened at
sizes used by common apps like News/Weather. Reducing embolden
strength slightly makes these glyphs much more readable without
sacrificing bold/normal weight differentiation.

Bug: 6712857
Change-Id: I1025f72b5ed07f0a65924ba58aa19511bc417eb1

src/ports/SkFontHost_FreeType.cpp

diff --git a/src/ports/SkFontHost_FreeType.cpp b/src/ports/SkFontHost_FreeType.cpp
index 621c94a..fc60ef9 100644
--- a/src/ports/SkFontHost_FreeType.cpp
+++ b/src/ports/SkFontHost_FreeType.cpp
@@ -63,6 +63,16 @@
     #define SK_GAMMA_EXPONENT   2.2
 #endif
 
+// hand-tuned value to reduce outline embolden strength
+#ifndef SK_OUTLINE_EMBOLDEN_DIVISOR
+    #ifdef SK_BUILD_FOR_ANDROID
+        #define SK_OUTLINE_EMBOLDEN_DIVISOR   34
+    #else
+        #define SK_OUTLINE_EMBOLDEN_DIVISOR   24
+    #endif
+#endif
+
+
 #ifdef SK_DEBUG
     #define SkASSERT_CONTINUE(pred)                                                         \
         do {                                                                                \
@@ -892,7 +902,7 @@
 void SkScalerContext_FreeType::emboldenOutline(FT_Outline* outline) {
     FT_Pos strength;
     strength = FT_MulFix(fFace->units_per_EM, fFace->size->metrics.y_scale)
-               / 24;
+               / SK_OUTLINE_EMBOLDEN_DIVISOR;
     FT_Outline_Embolden(outline, strength);
 }