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Make sure iso8859-1 displays with accentless ascii fallbacks, for people who insist on using quake's glyphs.

This commit is contained in:
Shpoike 2021-05-03 03:00:50 +01:00
parent aabf9b316d
commit f4d9df2b24
1 changed files with 50 additions and 47 deletions
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97
engine/gl/gl_font.c
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@ -1484,54 +1484,57 @@ static struct charcache_s *Font_GetChar(font_t *f, unsigned int codepoint)
//not cached, can't get.
c = Font_TryLoadGlyph(f, charidx);
if (!c && charidx >= 0x400 && charidx <= 0x45f)
{ //apparently there's a lot of russian players out there.
//if we just replace all their chars with a '?', they're gonna get pissed.
//so lets at least attempt to provide some default mapping that makes sense even if they don't have a full font.
//koi8-u is a mapping useful with 7-bit email because the message is still vaugely readable in latin if the high bits get truncated.
//not being a language specialist, I'm just going to use that mapping, with the high bit truncated to ascii (which mostly exists in the quake charset).
//this exact table is from ezquake. because I'm too lazy to figure out the proper mapping. (beware of triglyphs)
static char *wc2koi_table =
"?3??4?67??" "??" "??" ">?" //400
"abwgdevzijklmnop" //410
"rstufhc~{}/yx|`q" //420
"ABWGDEVZIJKLMNOP" //430
"RSTUFHC^[]_YX\\@Q" //440
"?#??$?&'??" "??" "??.?"; //450
charidx = wc2koi_table[charidx - 0x400];
if (charidx != '?')
{
c = Font_GetCharIfLoaded(f, charidx);
if (!c)
c = Font_TryLoadGlyph(f, charidx);
if (!c)
{
CHARIDXTYPE nc;
if (charidx >= 0xA0 && charidx <= 0x17F)
{ //latin-1 glyphs can mostly just drop their accents.
//should give a better fallback when people don't have these glyphs defined.
static char *latinfallback_table =
" !c###|S@c?<@-R@" //A0
"@@@@'u@.,@@>@@@?" //B0
"AAAAAAECEEEEIIII" //C0
"DNOOOOO*OUUUUYYs" //D0
"aaaaaaeceeeeiiii" //E0
"onooooo/ouuuuyyy" //F0
"AaAaAaCcCcCcCcDd" //100
"DdEeEeEeEeEeGgGg" //110
"GgGgHhHhIiIiIiIi" //120
"IiIiJjKkkLlLlLlL" //130
"lllNnNnNnnNnOoOo" //140
"OoEeRrRrRrSsSsSs" //150
"SsTtTtTtUuUuUuUu" //160
"UuUuWwYyYZzZzZzf"; //170
nc = latinfallback_table[charidx - 0xA0];
if (nc != '@')
{
c = Font_GetCharIfLoaded(f, nc);
if (!c)
c = Font_TryLoadGlyph(f, nc);
}
}
}
if (!c && charidx >= 0xA0 && charidx <= 0x17F)
{ //try to make sense of iso8859-1
//(mostly for zerstorer's o-umlout...)
static char *latin_table =
" ?c###|S?c?<??R?" //A0
"??""??""'u?.,??"">??""??" //B0
"AAAAAAECEEEEIIII" //C0
"DNOOOOO*OUUUUYYs" //D0
"aaaaaaeceeeeiiii" //E0
"onooooo/ouuuuyyy" //F0
"AaAaAaCcCcCcCcDd" //100
"DdEeEeEeEeEeGgGg" //110
"GgGgHhHhIiIiIiIi" //120
"IiIiJjKkkLlLlLlL" //130
"lllNnNnNnnNnOoOo" //140
"OoEeRrRrRrSsSsSs" //150
"SsTtTtTtUuUuUuUu" //160
"UuUuWwYyYZzZzZzf"; //170
charidx = latin_table[charidx - 0xA0];
if (charidx != '?')
{
c = Font_GetCharIfLoaded(f, charidx);
if (!c)
c = Font_TryLoadGlyph(f, charidx);
else if (charidx >= 0x400 && charidx <= 0x45f)
{ //apparently there's a lot of russian players out there.
//if we just replace all their chars with a '?', they're gonna get pissed.
//so lets at least attempt to provide some default mapping that makes sense even if they don't have a full font.
//koi8-u is a mapping useful with 7-bit email because the message is still vaugely readable in latin if the high bits get truncated.
//not being a language specialist, I'm just going to use that mapping, with the high bit truncated to ascii (which mostly exists in the quake charset).
//this exact table is from ezquake. because I'm too lazy to figure out the proper mapping. (beware of triglyphs)
static qbyte *wc2koi_table =
"?3??4?67??" "??" "??" ">?"
"abwgdevzijklmnop"
"rstufhc~{}/yx|`q"
"ABWGDEVZIJKLMNOP"
"RSTUFHC^[]_YX\\@Q"
"?#??$?&'??" "??" "??.?";
nc = wc2koi_table[charidx - 0x400];
if (nc != '?')
{
c = Font_GetCharIfLoaded(f, nc);
if (!c)
c = Font_TryLoadGlyph(f, nc);
}
}
}