[Git][freetype/freetype][master] [sfnt] 'COLR' v1 PaintTranslate and PaintScale precision

[Werner Lemberg (@wl)]

Werner Lemberg pushed to branch master at FreeType / FreeType

Commits:

• d7bdcb1b
  by Dominik Röttsches at 2021-07-29T05:56:15+00:00

  [sfnt] 'COLR' v1 PaintTranslate and PaintScale precision
  
  * src/sfnt/ttcolr.c (read_paint): Implement spec changes in
  PaintTranslate and PaintScale and friends.  Update parsing to read
  new shorter values.
  

1 changed file:

• src/sfnt/ttcolr.c

Changes:

src/sfnt/ttcolr.c

---

...	...	@@ -566,8 +566,8 @@
566	566	apaint->u.translate.paint.p = child_table_p;
567	567	apaint->u.translate.paint.insert_root_transform = 0;
568	568
569		- apaint->u.translate.dx = FT_NEXT_LONG( p );
570		- apaint->u.translate.dy = FT_NEXT_LONG( p );
	569	+ apaint->u.translate.dx = FT_NEXT_SHORT( p ) << 16;
	570	+ apaint->u.translate.dy = FT_NEXT_SHORT( p ) << 16;
571	571
572	572	return 1;
573	573	}
...	...	@@ -585,14 +585,14 @@
585	585	apaint->u.scale.paint.insert_root_transform = 0;
586	586
587	587	/* All scale paints get at least one scale value. */
588		- apaint->u.scale.scale_x = FT_NEXT_LONG( p );
	588	+ apaint->u.scale.scale_x = FT_NEXT_SHORT( p ) << 2;
589	589
590	590	/* Non-uniform ones read an extra y value. */
591	591	if ( apaint->format ==
592	592	FT_COLR_PAINTFORMAT_SCALE ||
593	593	(FT_PaintFormat_Internal)apaint->format ==
594	594	FT_COLR_PAINTFORMAT_INTERNAL_SCALE_CENTER )
595		- apaint->u.scale.scale_y = FT_NEXT_LONG( p );
	595	+ apaint->u.scale.scale_y = FT_NEXT_SHORT( p ) << 2;
596	596	else
597	597	apaint->u.scale.scale_y = apaint->u.scale.scale_x;
598	598
...	...	@@ -603,8 +603,8 @@
603	603	(FT_PaintFormat_Internal)apaint->format ==
604	604	FT_COLR_PAINTFORMAT_INTERNAL_SCALE_UNIFORM_CENTER )
605	605	{
606		- apaint->u.scale.center_x = FT_NEXT_LONG ( p );
607		- apaint->u.scale.center_y = FT_NEXT_LONG ( p );
	606	+ apaint->u.scale.center_x = FT_NEXT_SHORT ( p ) << 16;
	607	+ apaint->u.scale.center_y = FT_NEXT_SHORT ( p ) << 16;
608	608	}
609	609	else
610	610	{

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