kc3-lang/freetype

diff --git a/ChangeLog b/ChangeLog
index b34a71d..05033bd 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,15 @@
 2020-09-08  Alexei Podtelezhnikov  <apodtele@gmail.com>
 
+	[raster] Tune SMART macro (#58352).
+
+	Windows seems to perform smart dropout control at 26.6 precision.
+	To mimick Windows independent of increased precision, we need to tweak
+	the macro so that some close calls break down rather than up.
+
+	* src/raster/ftraster.c (SMART): Tweak the macro.
+
+2020-09-08  Alexei Podtelezhnikov  <apodtele@gmail.com>
+
 	[raster] Introduce SMART macro.
 
 	* src/raster/ftraster.c (SMART): New macro for smart dropout rounding.
diff --git a/src/raster/ftraster.c b/src/raster/ftraster.c
index 14ff4d4..71fac3f 100644
--- a/src/raster/ftraster.c
+++ b/src/raster/ftraster.c
@@ -459,8 +459,9 @@
 #define IS_TOP_OVERSHOOT( x )    \
           (Bool)( x - FLOOR( x ) >= ras.precision_half )
 
-  /* smart dropout rounding */
-#define SMART( x1, x2 )  FLOOR( ( (x1) + (x2) - 1 ) / 2 + ras.precision_half )
+  /* smart dropout rounding to find which pixel is closer to span ends;    */
+  /* to mimick Windows, symmetric cases break down indepenent of precision */
+#define SMART( p, q )  FLOOR( ( (p) + (q) + ras.precision * 63 / 64 ) >> 1 )
 
 #if FT_RENDER_POOL_SIZE > 2048
 #define FT_MAX_BLACK_POOL  ( FT_RENDER_POOL_SIZE / sizeof ( Long ) )