[Devel] Re: Font transforms and autohinter...

[Tom Kacvinsky]

Hi,

On Fri, 22 Dec 2000, Werner LEMBERG wrote:

>
> > Anyway, I think I'll try to cook up a test in FT2 to make sure we
> > don't call FT_Matrix_Invert for a non-invertible matrix.  If the
> > matrix in question is non-invertible, make the glyph loader fail, or
> > some such.
>
> But the test whether a matrix can be inverted is already in
> FT_Matrix_Invert().  You probably mean to check for error codes,
> right?
>

After checking the code last night, I came to the conclusion you came to: check
for errors.  We have to do this in the native glyph loaders also, becuase they
too can apply a non-invertible glyph transform to the glyphs.

Tom