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engine: common: add function for compressing visdata

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This commit is contained in:
Alibek Omarov 2024-05-27 13:18:05 +03:00
parent e310c666b1
commit 6cbac51731
1 changed files with 28 additions and 0 deletions
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28
engine/common/mod_bmodel.c
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@ -625,6 +625,34 @@ static byte *Mod_DecompressPVS( const byte *in, int visbytes )
return g_visdata;
}
static size_t Mod_CompressPVS( byte *out, const byte *in, size_t inbytes )
{
size_t i;
byte *dst = out;
for( i = 0; i < inbytes; i++ )
{
size_t j = i + 1, rep = 1;
*dst++ = in[i];
// only compress zeros
if( in[i] )
continue;
for( ; j < inbytes && rep != 255; j++, rep++ )
{
if( in[j] )
break;
}
*dst++ = rep;
i = j - 1;
}
return dst - out;
}
/*
==================
Mod_PointInLeaf