49 lines
2.3 KiB
HTML
49 lines
2.3 KiB
HTML
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<html>
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<head>
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<title>Bitmap Font Generator - Documentation</title>
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</head>
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<body>
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<h1>Bitmap Font Generator - Documentation</h1>
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<p><a href="../documentation.html">Back to main page</a></p>
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<h2>Known issues</h2>
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<h3>Rotated characters</h3>
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<p>Some font files have some but not all subsets with characters rotated by 90 degrees. For example @Arial Unicode MS,
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with subset Enclosed Alphanumerics. This is not an error, but a feature of that font file. With the font rotated
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like this it permits writing texts in normal text editors as if they were in vertical lines.</p>
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<p>As of version 1.13 the rotated fonts are no longer displayed in the font selection list.</p>
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<h3>Large bitmap fonts switch to Arial</h3>
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<p>Some bitmap fonts, e.g. FixedSys, may switch to Arial when generating very large fonts. This is a side effect of
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BMFont using GDI for rasterizing the fonts. As GDI doesn't support rendering these bitmap fonts at very large sizes it
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automatically switches to the default TrueType font, Arial, instead.</p>
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<h3>When executing BMFont from the command line the application returns before completing</h3>
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<p>This happens because BMFont is a GUI application and Windows automatically returns the control to the console
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after initiating the application. A console application, bmfont.com, has been created to allow the execution of the
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tool from the command line without immediate return to the console.</p>
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<h3>The bitmap font is generated with incorrect kerning pairs</h3>
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<p>For some TrueType fonts the kerning pairs that are saved into the bitmap font is obviously wrong, e.g. with
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duplicate entries, or offsets that are really large. This is usually a problem with the TrueType font itself, and not
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a bug in BMFont, as BMFont simply saves the kerning pairs it extracts from the TrueType font.</p>
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<p>BMFont provides an option to skip the kerning pairs when saving the bitmap font, which can be used when they are defunct and unusable.</p>
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<h3>Cropped character glyphs</h3>
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<p>When rendering the bitmap font using the Windows native font renderer, some TrueType fonts present cropped glyphs. This happens
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when the TrueType font has glyphs that go above or below the fonts cell height.</p>
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<p>To work around this, render the font from the TrueType outline instead.</p>
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</body>
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</html>
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