shithub: freetype+ttf2subf

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ref: 21472de11dab106cf9f34415b343172ccd695016
parent: c017f072e477aa306f6301f7049dbe699613996e
author: Tobias Ringström <[email protected]>
date: Wed Jan 4 13:27:16 EST 2012 

[truetype] Fix IP instruction if x_ppem != y_ppem.

* src/truetype/ttinterp.c (Ins_IP): Scale `orus' coordinates
properly.

git/fs: mount .git/fs: mount/attach disallowed 
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2012-01-04  Tobias Ringström  <[email protected]>
+
+	[truetype] Fix IP instruction if x_ppem != y_ppem.
+
+	* src/truetype/ttinterp.c (Ins_IP): Scale `orus' coordinates
+	properly.
+
 2012-01-02  Werner Lemberg  <[email protected]>
 
 	Fix tracing message for `loca' table.
--- a/src/truetype/ttinterp.c
+++ b/src/truetype/ttinterp.c
@@ -4,7 +4,7 @@
 /*                                                                         */
 /*    TrueType bytecode interpreter (body).                                */
 /*                                                                         */
-/*  Copyright 1996-2011                                                    */
+/*  Copyright 1996-2012                                                    */
 /*  by David Turner, Robert Wilhelm, and Werner Lemberg.                   */
 /*                                                                         */
 /*  This file is part of the FreeType project, and may only be used,       */
@@ -6575,10 +6575,22 @@
       if ( twilight )
         old_range = CUR_Func_dualproj( &CUR.zp1.org[CUR.GS.rp2],
                                        orus_base );
-      else
+      else if ( CUR.metrics.x_scale == CUR.metrics.y_scale )
         old_range = CUR_Func_dualproj( &CUR.zp1.orus[CUR.GS.rp2],
                                        orus_base );
+      else
+      {
+        FT_Vector  vec;
 
+
+        vec.x = TT_MULFIX( CUR.zp1.orus[CUR.GS.rp2].x - orus_base->x,
+                           CUR.metrics.x_scale );
+        vec.y = TT_MULFIX( CUR.zp1.orus[CUR.GS.rp2].y - orus_base->y,
+                           CUR.metrics.y_scale );
+
+        old_range = CUR_fast_dualproj( &vec );
+      }
+
       cur_range = CUR_Func_project ( &CUR.zp1.cur[CUR.GS.rp2], cur_base );
     }
 
@@ -6601,8 +6613,20 @@
 
       if ( twilight )
         org_dist = CUR_Func_dualproj( &CUR.zp2.org[point], orus_base );
-      else
+      else if ( CUR.metrics.x_scale == CUR.metrics.y_scale )
         org_dist = CUR_Func_dualproj( &CUR.zp2.orus[point], orus_base );
+      else
+      {
+        FT_Vector  vec;
+
+
+        vec.x = TT_MULFIX( CUR.zp2.orus[point].x - orus_base->x,
+                           CUR.metrics.x_scale );
+        vec.y = TT_MULFIX( CUR.zp2.orus[point].y - orus_base->y,
+                           CUR.metrics.y_scale );
+
+        org_dist = CUR_fast_dualproj( &vec );
+      }
 
       cur_dist = CUR_Func_project ( &CUR.zp2.cur[point], cur_base );