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https://git.code.sf.net/p/quake/quakeforge
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b9d2882e02
The output fat-pvs data is the *difference* between the base pvs and fat pvs. This currently makes for about 64kB savings for marcher.bsp, and about 233MB savings for ad_tears.bsp (or about 50% (470.7MB->237.1MB)). I expect using utf-8 encoding for the run lengths to make for even bigger savings (the second output fat-pvs leaf of marcher.bsp is all 0s, or 6 bytes in the file, which would reduce to 3 bytes using utf-8).
64 lines
1.5 KiB
C
64 lines
1.5 KiB
C
/*
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pvsfile.h
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External pvs file support
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Copyright (C) 2021 Bill Currie <bill@taniwha.org>
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Author: Bill Currie <bill@taniwha.org>
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Date: 2021/07/27
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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*/
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#ifndef __QF_pvsfile_h
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#define __QF_pvsfile_h
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#include <stdint.h>
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#include "QF/qtypes.h"
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/** \defgroup pvsfile External PVS
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\ingroup utils
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External PVS data.
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*/
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///@{
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#define PVS_MAGIC "QF PVS\r\n\x1a\x04"
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#define PVS_VERSION 1
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#define PVS_IS_FATPVS 1 ///< data is for fat pvs (phs, lighting, etc)
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///< otherwise it's the base pvs
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#define PVS_UTF8_RLE 2 ///< 0-byte run length encoding uses utf-8
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typedef struct pvsfile_s {
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char magic[16];
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uint32_t version;
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uint32_t md4_offset; ///< offset of md4 sum, or 0 if not present
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uint32_t flags;
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uint32_t visleafs; ///< does NOT include leaf-0
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uint32_t visoffsets[]; ///< does NOT include leaf-0
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} pvsfile_t;
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///@}
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#endif//__QF_pvsfile_h
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