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vkd3d/demos/etl16-unicode.h

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2025-06-19 23:03:27 +02:00
/*
* Copyright 2025 Henri Verbeet
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
/* The glyph data is derived from etl16-unicode.bdf as found on
* ftp://ftp.ring.gr.jp/pub/X/opengroup/contrib/fonts/etl-unicode.tar.gz
* with the following license:
*
* Public domain font. Share and enjoy.
*/
/* Each line in etl16_unicode[] below contains the bitmap data for a single
* 8x16 glyph, starting at ASCII 0x20 (space). Each byte corresponds to a
* single line in the glyph.
*
* The BDF bitmap data is essentially the same format we're using here, so we
* could have extracted the glyphs manually, or perhaps using a small script.
* However, bdf2psf can do most of the work for us, by creating a PSF1 font
* from the BDF.
*
* A PSF1 font has a 4 byte header, followed by at least 256 glyphs.
* For a 8x16 font, each glyph consists of 16 bytes, one byte for each row.
*
* We're not interested in control characters or extended ASCII, so we skip
* the first 0x4 (header) + 0x20 (control characters) * 0x10 = 516 bytes, and
* extract the next (0x80 - 0x20) * 0x10 = 1536 bytes:
*
* bdf2psf etl16-unicode.bdf standard.equivalents ascii.set 256 /dev/stdout | xxd -i -c 16 -s 516 -l 1536
*
* and we're done.
*/
static const uint8_t etl16_unicode[] =
{
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};