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| author | Alexei Podtelezhnikov <apodtele@gmail.com> | 2021-12-10 22:05:51 -0500 |
|---|---|---|
| committer | Alexei Podtelezhnikov <apodtele@gmail.com> | 2021-12-10 22:05:51 -0500 |
| commit | 2e3455b135967b9e0e9d3cec52f0bb4a3da1f9e1 (patch) | |
| tree | b2ef3b304ade215832c472b874b3f22da844db1a | |
| parent | 34fc55de47a5abe310f3c5a3f7d8cf9c5443e07f (diff) | |
| download | freetype2-2e3455b135967b9e0e9d3cec52f0bb4a3da1f9e1.tar.gz | |
[truetype] Limit INSTCTRL appication within specs.
* src/truetype/ttinterp.c (Ins_INSTCTRL): Limit its global effects
to the CVT program and local effects to the glyph program.
| -rw-r--r-- | src/truetype/ttinterp.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/src/truetype/ttinterp.c b/src/truetype/ttinterp.c index ee8e1523f..cb17e25eb 100644 --- a/src/truetype/ttinterp.c +++ b/src/truetype/ttinterp.c @@ -5260,10 +5260,15 @@ } } - exc->GS.instruct_control &= ~(FT_Byte)Kf; - exc->GS.instruct_control |= (FT_Byte)L; + /* INSTCTRL should only be used in the CVT program */ + if ( exc->iniRange == tt_coderange_cvt ) + { + exc->GS.instruct_control &= ~(FT_Byte)Kf; + exc->GS.instruct_control |= (FT_Byte)L; + } - if ( K == 3 ) + /* except to change the subpixel flags temporarily */ + else if ( exc->iniRange == tt_coderange_glyph && K == 3 ) { #ifdef TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY /* INSTCTRL modifying flag 3 also has an effect */ |