[ft] differing advances

[Ryan Underwood]

When I do the following:

-------------------------------------------------------------
FT_Glyph tmpglyph;
err = FT_Glyph_Copy(m_glyph, &tmpglyph);
assert(err == FT_Err_Ok);

FT_Glyph_To_Bitmap(&tmpglyph, FT_RENDER_MODE_NORMAL, 0, true);
assert(tmpglyph->format == FT_GLYPH_FORMAT_BITMAP);
FT_BitmapGlyph bg = (FT_BitmapGlyph)tmpglyph;
-------------------------------------------------------------

The contents of tmpglyph->advance and bg->root.advance differ.

- Why is that?  It's only a typecast.
- What exactly is in tmpglyph->advance at this point?  For example,
  I have 0x00100000, which is far too large to be reasonable.

Just hoping I'm doing the right thing.

-- 
Ryan Underwood, <address@hidden>

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