From d8e3f99cdf46297afeb26fe15ad30f7c6de8ee7c Mon Sep 17 00:00:00 2001
From: marha <marha@users.sourceforge.net>
Date: Mon, 18 Jul 2011 08:30:47 +0200
Subject: Switched to freetype 2.4.5

---
 freetype/src/raster/ftraster.c | 42 ++++++++++++++++++++++++++++++++++++++++--
 freetype/src/raster/ftrend1.c  |  8 ++++++++
 freetype/src/raster/rules.mk   |  5 +++--
 3 files changed, 51 insertions(+), 4 deletions(-)

(limited to 'freetype/src/raster')

diff --git a/freetype/src/raster/ftraster.c b/freetype/src/raster/ftraster.c
index 9638dfb02..55e2d0d75 100644
--- a/freetype/src/raster/ftraster.c
+++ b/freetype/src/raster/ftraster.c
@@ -4,7 +4,7 @@
 /*                                                                         */
 /*    The FreeType glyph rasterizer (body).                                */
 /*                                                                         */
-/*  Copyright 1996-2001, 2002, 2003, 2005, 2007, 2008, 2009, 2010 by       */
+/*  Copyright 1996-2001, 2002, 2003, 2005, 2007, 2008, 2009, 2010, 2011 by */
 /*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
 /*                                                                         */
 /*  This file is part of the FreeType project, and may only be used,       */
@@ -651,11 +651,33 @@
   static void
   Set_High_Precision( RAS_ARGS Int  High )
   {
+    /*
+     * `precision_step' is used in `Bezier_Up' to decide when to split a
+     * given y-monotonous Bezier arc that crosses a scanline before
+     * approximating it as a straight segment.  The default value of 32 (for
+     * low accuracy) corresponds to
+     *
+     *   32 / 64 == 0.5 pixels ,
+     *
+     * while for the high accuracy case we have
+     *
+     *   256/ (1 << 12) = 0.0625 pixels .
+     *
+     * `precision_jitter' is an epsilon threshold used in
+     * `Vertical_Sweep_Span' to deal with small imperfections in the Bezier
+     * decomposition (after all, we are working with approximations only);
+     * it avoids switching on additional pixels which would cause artifacts
+     * otherwise.
+     *
+     * The value of `precision_jitter' has been determined heuristically.
+     *
+     */
+
     if ( High )
     {
       ras.precision_bits   = 12;
       ras.precision_step   = 256;
-      ras.precision_jitter = 50;
+      ras.precision_jitter = 30;
     }
     else
     {
@@ -2403,6 +2425,14 @@
           return;  /* no drop-out control */
         }
 
+        /* undocumented but confirmed: If the drop-out would result in a  */
+        /* pixel outside of the bounding box, use the pixel inside of the */
+        /* bounding box instead                                           */
+        if ( pxl < 0 )
+          pxl = e1;
+        else if ( TRUNC( pxl ) >= ras.bWidth )
+          pxl = e2;
+
         /* check that the other pixel isn't set */
         e1 = pxl == e1 ? e2 : e1;
 
@@ -2579,6 +2609,14 @@
           return;  /* no drop-out control */
         }
 
+        /* undocumented but confirmed: If the drop-out would result in a  */
+        /* pixel outside of the bounding box, use the pixel inside of the */
+        /* bounding box instead                                           */
+        if ( pxl < 0 )
+          pxl = e1;
+        else if ( TRUNC( pxl ) >= ras.target.rows )
+          pxl = e2;
+
         /* check that the other pixel isn't set */
         e1 = pxl == e1 ? e2 : e1;
 
diff --git a/freetype/src/raster/ftrend1.c b/freetype/src/raster/ftrend1.c
index 1ed8af612..d8a89f28a 100644
--- a/freetype/src/raster/ftrend1.c
+++ b/freetype/src/raster/ftrend1.c
@@ -161,10 +161,18 @@
     /* compute the control box, and grid fit it */
     FT_Outline_Get_CBox( outline, &cbox );
 
+    /* undocumented but confirmed: bbox values get rounded */
+#if 1
+    cbox.xMin = FT_PIX_ROUND( cbox.xMin );
+    cbox.yMin = FT_PIX_ROUND( cbox.yMin );
+    cbox.xMax = FT_PIX_ROUND( cbox.xMax );
+    cbox.yMax = FT_PIX_ROUND( cbox.yMax );
+#else
     cbox.xMin = FT_PIX_FLOOR( cbox.xMin );
     cbox.yMin = FT_PIX_FLOOR( cbox.yMin );
     cbox.xMax = FT_PIX_CEIL( cbox.xMax );
     cbox.yMax = FT_PIX_CEIL( cbox.yMax );
+#endif
 
     width  = (FT_UInt)( ( cbox.xMax - cbox.xMin ) >> 6 );
     height = (FT_UInt)( ( cbox.yMax - cbox.yMin ) >> 6 );
diff --git a/freetype/src/raster/rules.mk b/freetype/src/raster/rules.mk
index 9703b1298..0e0b5e4eb 100644
--- a/freetype/src/raster/rules.mk
+++ b/freetype/src/raster/rules.mk
@@ -3,7 +3,7 @@
 #
 
 
-# Copyright 1996-2000, 2001, 2003, 2008, 2009 by
+# Copyright 1996-2000, 2001, 2003, 2008, 2009, 2011 by
 # David Turner, Robert Wilhelm, and Werner Lemberg.
 #
 # This file is part of the FreeType project, and may only be used, modified,
@@ -25,7 +25,8 @@ RASTER_COMPILE := $(FT_COMPILE) $I$(subst /,$(COMPILER_SEP),$(RASTER_DIR))
 # raster driver sources (i.e., C files)
 #
 RASTER_DRV_SRC := $(RASTER_DIR)/ftraster.c \
-                  $(RASTER_DIR)/ftrend1.c
+                  $(RASTER_DIR)/ftrend1.c  \
+                  $(RASTER_DIR)/rastpic.c
 
 
 # raster driver headers
-- 
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