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author | Benji Dial <benji6283@gmail.com> | 2021-02-17 16:35:02 -0500 |
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committer | Benji Dial <benji6283@gmail.com> | 2021-02-17 16:35:02 -0500 |
commit | 3a3602861226e995d95a8898668cd559c3ca1cf6 (patch) | |
tree | 0d5bc0494297a12e9ccb76b31cb365c843216735 /doc | |
parent | 49d76d30a55707e2bf95fd9ba03296489fac8d1d (diff) | |
download | portland-os-3a3602861226e995d95a8898668cd559c3ca1cf6.tar.gz |
quick bitmap font format, borrowing new default font from X
Diffstat (limited to 'doc')
-rw-r--r-- | doc/pbf.txt | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/doc/pbf.txt b/doc/pbf.txt new file mode 100644 index 0000000..f42474c --- /dev/null +++ b/doc/pbf.txt @@ -0,0 +1,18 @@ +Portland Bitmap Font format + +This format is intended as a quickly readable font format. + +Header: + byte: character width + byte: character height + byte: horizontal padding + byte: vertical padding + dword: offset into file of default character bitmap + +For each character (255 of them, 0x01 to 0xff): + dword: offset into bitmap data area of character bitmap, + or 0xffffffff if the default should be used. + +Bitmap data area: + bitmaps are from left to right, then from top to bottom. + the least significant bit of a byte is the "first" one.
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