Handling of internationalization in CGUIFont

[MartinVee]

I used Irrlicht Font Maker to generate a PNG image of a font (Lucida Handwriting, if it's important). I loaded the PNG with a CGUIFont and I drew the string "Iñtërnâtiônàlizætiøn". All those characters are on the PNG.

It outputs "Iñòtëìrnâãtiôõnàálizæçtiøùn".

There's a few extra characters here. I looked at the code, and I can't understand why it's happening.

Where does the problem come from? Is CGUIFont capable of handling this kind of string? Does Irrlicht Font Maker produce incorrect character sheets?

[Rayshader]

Hi,
You wrote CGUIFont, it isn't IGUIFont ? (Cannot find CGUIFont in the API documentation...)
I've tested your string "Iñtërnâtiônàlizætiøn" with the default font :

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env->getBuiltInFont();
 

And the output is correct.
Could you show the generated PNG you load ?

[MartinVee]

No problem! I don't think there's copyright issues with Lucida anyway.



EDIT :
What I actually meant is that I check the implementation of the IGUIFont. That's why I talked about CGUIFont. But you're right ; what I'm really doing is :

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IGUIFont font * = env->getFont(filename);
 

[MartinVee]

Oh! I just realized that I had a message in the log :

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The amount of upper corner pixels and the lower corner pixels is not equal, font file may be corrupted.
 

So, there maybe a problem with either Lucide Handwriting, or Irrlicht Font Maker. I'm trying a more common font.

[MartinVee]

Oh, I tried with Segoe UI, and it worked! What the...?

EDIT :

Okay, I tried Nikolay Atanassov's Very Advanced irrFontTool, and when I try to load "Lucida Handwriting", I get the folowing warning :

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Could not get lower surface level for mip map generation
 

And the tool refuses to generate a font PNG. Irrlicht Font Maker didn't complain.

So it seems that the problem came from Lucida Handwriting.

Thanks a lot!

[CuteAlien]

Hm, irrlicht font tool shouldn't really produce invalid fonts I guess. On which operating system did you use it (it's implemented slightly different for Windows&Linux).

[MartinVee]

On Windows 10. I used Irrlicht Font Maker. I generated a font using Lucida Handwriting, with a map of 512x512 and a font size of 10.

[CuteAlien]

Thanks (Irrlicht also comes with a fontmaker tool, so I thought it was about that one).