[HarfBuzz] Some experiments with harfbuzz/OpenGL

[Khaled Hosny]

On Fri, Apr 12, 2013 at 07:44:17PM +0200, Nicolas Rougier wrote:
> 
> 
> Hi,
> 
> Thanks to the great example available at https://github.com/lxnt/ex-sdl-freetype-harfbuzz, I did some experiments to render
> some Arabic text using OpenGL/Freetype/Harfbuzz.
> 
> You can find a screenshot here: http://freetype-gl.googlecode.com/svn/wiki/images/arabic.png
> 
> Sources are available in http://code.google.com/p/freetype-gl/source/browse/trunk/harfbuzz.
> It's quite experimental though...
> 
> I hope the text is ok since I don't read Arabic (google helped me on this).

The text is fine (it poem pangram), but the positioning of combining
marks does not seem quite right, some of them are shifted horizontally
by a small amount, sometimes to the left and others to the right.

Regards,
Khaled