--- ray/src/hd/holo.h 1997/12/12 19:52:31 3.7 +++ ray/src/hd/holo.h 2004/09/09 01:06:19 3.25 @@ -1,34 +1,35 @@ -/* Copyright (c) 1997 Silicon Graphics, Inc. */ - -/* SCCSid "$SunId$ SGI" */ - +/* RCSid: $Id: holo.h,v 3.25 2004/09/09 01:06:19 greg Exp $ */ /* * Header file for holodeck programs * * 9/29/97 GWLarson */ +#ifndef _RAD_HOLO_H_ +#define _RAD_HOLO_H_ #include "standard.h" #include "color.h" +#ifdef __cplusplus +extern "C" { +#endif + #ifndef HDMAX #define HDMAX 128 /* maximum active holodeck sections */ #endif -#ifndef int2 -#define int2 short + +#ifndef MAXDIRSE +#define MAXDIRSE 32 /* maximum seeks per directory write */ #endif -#ifndef int4 -#define int4 long -#endif #define DCINF (unsigned)((1L<<16)-1) /* special value for infinity */ #define DCLIN (unsigned)(1L<<11) /* linear depth limit */ typedef struct { BYTE r[2][2]; /* ray direction index */ - COLR v; /* value */ - unsigned int2 d; /* depth code */ -} RAYVAL; /* ray value (from second wall) */ + COLR v; /* color value */ + uint16 d; /* depth code (from entry wall) */ +} RAYVAL; /* ray value */ /* * Walls are ordered: X0 X1 X2 WN @@ -48,12 +49,12 @@ typedef struct { } GCOORD; /* grid coordinates (two for beam) */ typedef struct { - unsigned int4 nrd; /* number of beam rays bundled on disk */ - long fo; /* position in file */ + uint32 nrd; /* number of beam rays bundled on disk */ + off_t fo; /* position in file */ } BEAMI; /* beam index */ typedef struct { - unsigned int4 nrm; /* number of beam rays bundled in memory */ + uint32 nrm; /* number of beam rays bundled in memory */ unsigned long tick; /* clock tick for LRU replacement */ } BEAM; /* followed by nrm RAYVAL's */ @@ -63,47 +64,67 @@ typedef struct { typedef struct { FVECT orig; /* prism origin (first) */ FVECT xv[3]; /* side vectors (second) */ - int2 grid[3]; /* grid resolution (third) */ + int16 grid[3]; /* grid resolution (third) */ } HDGRID; /* holodeck section grid (must match HOLO struct) */ typedef struct holo { FVECT orig; /* prism origin (first) */ FVECT xv[3]; /* side vectors (second) */ - int2 grid[3]; /* grid resolution (third) */ + int16 grid[3]; /* grid resolution (third) */ int fd; /* file descriptor */ - short dirty; /* beam index needs update to file */ + struct { + int s, n; /* dirty section start, length */ + } dirseg[MAXDIRSE+1]; /* dirty beam index segments */ + short dirty; /* number of dirty segments */ double tlin; /* linear range for depth encoding */ - FVECT wn[3]; /* wall normals (derived) */ - double wg[3]; /* wall grid multipliers (derived) */ - double wo[6]; /* wall offsets (derived) */ + FVECT wg[3]; /* wall grid vectors (derived) */ int wi[6]; /* wall super-indices (derived) */ char *priv; /* pointer to private client data */ BEAM **bl; /* beam pointers (memory cache) */ BEAMI bi[1]; /* beam index (extends struct) */ } HOLO; /* holodeck section */ -#define nbeams(hp) (2*((hp)->wi[5]-1)) +typedef struct { + HOLO *h; /* pointer to holodeck */ + int b; /* beam index */ +} HDBEAMI; /* holodeck beam index */ + +#define nbeams(hp) (((hp)->wi[5]-1)<<1) #define biglob(hp) ((hp)->bi) #define blglob(hp) (*(hp)->bl) #define bnrays(hp,i) ((hp)->bl[i]!=NULL ? (hp)->bl[i]->nrm : (hp)->bi[i].nrd) -#define hdflush(hp) (hdfreebeam(hp,0) && hdsync(hp,0)) -#define hdclobber(hp) (hdkillbeam(hp,0) && hdsync(hp,0)) +#define hdflush(hp) (hdfreebeam(hp,0), hdsync(hp,0)) +#define hdclobber(hp) (hdkillbeam(hp,0), hdsync(hp,0)) +/* extern HOLO *hdinit(), *hdalloc(); extern BEAM *hdgetbeam(); extern RAYVAL *hdnewrays(); -extern long hdmemuse(), hdfiluse(); +extern unsigned hdmemuse(); +extern off_t hdfiluse(), hdfilen(), hdallocfrag(); extern double hdray(), hdinter(); extern unsigned hdcode(); +extern int hdfilord(); +*/ -extern int hdcachesize; /* target cache size (bytes) */ +#define FF_NEVER 0 /* never free fragments */ +#define FF_WRITE 01 /* free fragment on write */ +#define FF_ALLOC 02 /* free fragment on ray alloc */ +#define FF_READ 04 /* free fragment on read */ +#define FF_KILL 010 /* free fragment on beam kill */ + +extern int hdfragflags; /* tells when to free fragments */ +extern unsigned hdcachesize; /* target cache size (bytes) */ extern unsigned long hdclock; /* holodeck system clock */ extern HOLO *hdlist[HDMAX+1]; /* holodeck pointers (NULL term.) */ extern float hd_depthmap[]; /* depth conversion map */ +extern int hdwg0[6]; /* wall grid 0 index */ +extern int hdwg1[6]; /* wall grid 1 index */ + #define hddepth(hp,dc) ( (dc) >= DCINF ? FHUGE : \ (hp)->tlin * ( (dc) >= DCLIN ? \ hd_depthmap[(dc)-DCLIN] : \ @@ -111,7 +132,7 @@ extern float hd_depthmap[]; /* depth conversion map * #define HOLOFMT "Holodeck" /* file format identifier */ #define HOLOVERS 0 /* file format version number */ -#define HOLOMAGIC (327+HOLOVERS) /* file magic number */ +#define HOLOMAGIC (323+sizeof(off_t)+8*HOLOVERS) /* file magic number */ /* * A holodeck file consists of an information header terminated by a @@ -131,3 +152,39 @@ extern float hd_depthmap[]; /* depth conversion map * * in future versions, but we thought this would be best for paging speed * in our initial implementation. */ + + /* clumpbeams.c */ +extern void clumpbeams(HOLO *hp, int maxcnt, int maxsiz, +int (*cf)(HOLO *hp, int *bqueue, int bqlen)); + /* holo.c */ +extern void hdcompgrid(HOLO *hp); +extern int hdbcoord(GCOORD gc[2], HOLO *hp, int i); +extern int hdbindex(HOLO *hp, GCOORD gc[2]); +extern void hdcell(FVECT cp[4], HOLO *hp, GCOORD *gc); +extern int hdlseg(int lseg[2][3], HOLO *hp, GCOORD gc[2]); +extern unsigned int hdcode(HOLO *hp, double d); +extern void hdgrid( FVECT gp, HOLO *hp, FVECT wp); +extern void hdworld(FVECT wp, HOLO *hp, FVECT gp); +extern double hdray(FVECT ro, FVECT rd, HOLO *hp, GCOORD gc[2], BYTE r[2][2]); +extern double hdinter(GCOORD gc[2], BYTE r[2][2], double *ed, HOLO *hp, + FVECT ro, FVECT rd); + /* holofile.c */ +extern HOLO * hdinit(int fd, HDGRID *hproto); +extern void hddone(HOLO *hp); +extern int hdsync(HOLO *hp, int all); +extern off_t hdfilen(int fd); +extern off_t hdfiluse(int fd); +extern RAYVAL * hdnewrays(HOLO *hp, int i, int nr); +extern BEAM * hdgetbeam(HOLO *hp, int i); +extern void hdloadbeams(HDBEAMI *hb, int n, void (*bf)(BEAM *bp, HDBEAMI *hb)); +extern int hdfreebeam(HOLO *hp, int i); +extern int hdfreefrag(HOLO *hp, int i); +extern int hdfragOK(int fd, int *listlen, int32 *listsiz); +extern int hdkillbeam(HOLO *hp, int i); + + +#ifdef __cplusplus +} +#endif +#endif /* _RAD_HOLO_H_ */ +