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Code Issues 4 Releases Wiki Activity

* src/truetype/ttobjs.c (tt_size_run_prep): Reset more GS variables. 

BTW, Greg agrees that the OpenType specification is missing the list
of GS variables which will always be reset to the default values
after the `prep' table has been executed.
This commit is contained in:
Werner Lemberg 2013-02-07 19:49:12 +01:00
parent bfcc375b06
commit a2c7eb1888
2 changed files with 24 additions and 1 deletions
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ChangeLog
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@ -1,3 +1,11 @@
2013-02-07 Werner Lemberg <wl@gnu.org>
* src/truetype/ttobjs.c (tt_size_run_prep): Reset more GS variables.
BTW, Greg agrees that the OpenType specification is missing the list
of GS variables which will always be reset to the default values
after the `prep' table has been executed.
2013-02-06 Werner Lemberg <wl@gnu.org>
* src/truetype/ttobjs.c (tt_size_run_prep): Reset reference points.

17
src/truetype/ttobjs.c
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@ -878,11 +878,26 @@
else
error = TT_Err_Ok;
/* UNDOCUMENTED! Reference points are reset to zero. */
/* UNDOCUMENTED! The MS rasterizer doesn't allow the following */
/* graphics state variables to be modified by the CVT program. */
exec->GS.dualVector.x = 0x4000;
exec->GS.dualVector.y = 0;
exec->GS.projVector.x = 0x4000;
exec->GS.projVector.y = 0x0;
exec->GS.freeVector.x = 0x4000;
exec->GS.freeVector.y = 0x0;
exec->GS.rp0 = 0;
exec->GS.rp1 = 0;
exec->GS.rp2 = 0;
exec->GS.gep0 = 1;
exec->GS.gep1 = 1;
exec->GS.gep2 = 1;
exec->GS.loop = 1;
/* save as default graphics state */
size->GS = exec->GS;