shithub: freetype+ttf2subf

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[smooth] Attempt to mitigate bug #54019.

The robust rendering of estra large glyphs came with unbearable cost.
The old way of bisecting should fail but fail faster.

* src/smooth/ftgrays.c (gray_convert_glyph): Switch back to bisecting
in y-direction.

git/fs: mount .git/fs: mount/attach disallowed

--- a/ChangeLog

+++ b/ChangeLog

@@ -1,3 +1,13 @@

+2018-06-02  Alexei Podtelezhnikov  <[email protected]>

+

+	[smooth] Attempt to mitigate bug #54019.

+

+	The robust rendering of estra large glyphs came with unbearable cost.

+	The old way of bisecting should fail but fail faster.

+

+	* src/smooth/ftgrays.c (gray_convert_glyph): Switch back to bisecting

+	in y-direction.

+

 2018-06-02  Werner Lemberg  <[email protected]>

 	* src/truetype/ttinterp.c (Ins_MIRP): Use SUB_LONG; avoid FT_ABS.

--- a/src/smooth/ftgrays.c

+++ b/src/smooth/ftgrays.c

@@ -1767,8 +1767,8 @@

       ras.max_ey = FT_MIN( y, yMax );

       band    = bands;

-      band[1] = xMin;

-      band[0] = xMax;

+      band[1] = ras.min_ey;

+      band[0] = ras.max_ey;

       do

       {

@@ -1780,8 +1780,8 @@

         ras.num_cells = 0;

         ras.invalid   = 1;

-        ras.min_ex    = band[1];

-        ras.max_ex    = band[0];

+        ras.min_ey    = band[1];

+        ras.max_ey    = band[0];

         error = gray_convert_glyph_inner( RAS_VAR );