shithub: freetype+ttf2subf

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[truetype] Do not set any ClearType flags in v40 monochrome mode.

This fixes weird behavior of instructions that resulted in rendering
differences between v35 and v40 in monochrome mode, e.g., in
`timesbi.ttf'.

* src/truetype/ttinterp.c (Ins_GETINFO)
[TT_SUPPORT_SUBPIXEL_HINTING_MINIMAL]: Check
`subpixel_hinting_lean'.

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

--- a/ChangeLog

+++ b/ChangeLog

@@ -1,3 +1,15 @@

+2017-08-03  Nikolaus Waxweiler  <[email protected]>

+

+	[truetype] Do not set any ClearType flags in v40 monochrome mode.

+

+	This fixes weird behavior of instructions that resulted in rendering

+	differences between v35 and v40 in monochrome mode, e.g., in

+	`timesbi.ttf'.

+

+	* src/truetype/ttinterp.c (Ins_GETINFO)

+	[TT_SUPPORT_SUBPIXEL_HINTING_MINIMAL]: Check

+	`subpixel_hinting_lean'.

+

 2017-08-01  Werner Lemberg  <[email protected]>

 	* src/truetype/ttgxvar.c (TT_Get_MM_Var): Fix thinko.

--- a/src/truetype/ttinterp.c

+++ b/src/truetype/ttinterp.c

@@ -7357,7 +7357,11 @@

       K |= 1 << 12;

 #ifdef TT_SUPPORT_SUBPIXEL_HINTING_MINIMAL

-    if ( SUBPIXEL_HINTING_MINIMAL )

+    /* Toggle the following flags only outside of monochrome mode.      */

+    /* Otherwise, instructions may behave weirdly and rendering results */

+    /* may differ between v35 and v40 mode, e.g., in `Times New Roman   */

+    /* Bold Italic'. */

+    if ( SUBPIXEL_HINTING_MINIMAL && exc->subpixel_hinting_lean )

     {

       /********************************/

       /* HINTING FOR SUBPIXEL         */