kpathsea: Basic glyph lookup
6.3.1 Basic glyph lookup
------------------------
When Kpathsea looks for a bitmap font NAME at resolution DPI in a format
FORMAT, it first checks each directory in the search path for a file
'NAME.DPIFORMAT'; for example, 'cmr10.600pk'. Kpathsea looks for a PK
file first, then a GF file.
If that fails, Kpathsea looks for 'dpiDPI/NAME.FORMAT'; for example,
'dpi600/cmr10.pk'. This is how fonts are typically stored on
filesystems (such as DOS) that permit only three-character extensions.
If that fails, Kpathsea looks for a font with a close-enough DPI.
"Close enough" is defined by the macro 'KPSE_BITMAP_TOLERANCE' in
'kpathsea/tex-glyph.h' to be 'DPI / 500 + 1'. This is slightly more
than the 0.2% minimum allowed by the DVI standard
(<CTAN:/dviware/driv-standard/level-0>).
Info Catalog
kpathsea: Glyph lookup
kpathsea: Fontmap