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#ifndef lint |
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static const char RCSid[] = "$Id: preload.c,v 2.19 2025/06/20 23:47:43 greg Exp $"; |
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#endif |
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/* |
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* Preload associated object structures to maximize memory sharing. |
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* |
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* External symbols declared in ray.h |
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*/ |
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|
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#include "copyright.h" |
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|
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#include "ray.h" |
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#include "otypes.h" |
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#include "face.h" |
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#include "cone.h" |
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#include "instance.h" |
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#include "mesh.h" |
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#include "data.h" |
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#include "func.h" |
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#include "bsdf.h" |
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|
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char *shm_boundary = NULL; /* boundary of shared memory */ |
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|
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|
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/* KEEP THIS ROUTINE CONSISTENT WITH THE DIFFERENT OBJECT FUNCTIONS! */ |
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|
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|
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int |
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load_os( /* load associated data for object */ |
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OBJREC *op |
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) |
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{ |
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DATARRAY *dp; |
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SDData *sd; |
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|
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SDretainSet = SDretainAll; |
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|
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switch (op->otype) { |
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case OBJ_FACE: /* polygon */ |
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getface(op); |
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return(1); |
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case OBJ_CONE: /* cone */ |
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case OBJ_RING: /* disk */ |
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case OBJ_CYLINDER: /* cylinder */ |
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case OBJ_CUP: /* inverted cone */ |
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case OBJ_TUBE: /* inverted cylinder */ |
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getcone(op, 1); |
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return(1); |
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case OBJ_INSTANCE: /* octree instance */ |
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getinstance(op, IO_ALL); |
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return(1); |
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case OBJ_MESH: /* mesh instance */ |
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getmeshinst(op, IO_ALL); |
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return(1); |
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case PAT_CPICT: /* color picture */ |
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if (op->oargs.nsargs < 4) |
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goto sargerr; |
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getpict(op->oargs.sarg[3]); |
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getfunc(op, 4, 0x3<<5, 0); |
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return(1); |
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case PAT_CDATA: /* color data */ |
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if (op->oargs.nsargs < 4) |
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goto sargerr; |
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dp = getdata(op->oargs.sarg[3]); |
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getdata(op->oargs.sarg[4]); |
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getdata(op->oargs.sarg[5]); |
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getfunc(op, 6, ((1<<dp->nd)-1)<<7, 0); |
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return(1); |
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case PAT_BDATA: /* brightness data */ |
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if (op->oargs.nsargs < 2) |
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goto sargerr; |
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dp = getdata(op->oargs.sarg[1]); |
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getfunc(op, 2, ((1<<dp->nd)-1)<<3, 0); |
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return(1); |
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case PAT_BFUNC: /* brightness function */ |
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getfunc(op, 1, 0x1, 0); |
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return(1); |
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case PAT_CFUNC: /* color function */ |
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getfunc(op, 3, 0x7, 0); |
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return(1); |
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case PAT_SPECFUNC: /* spectral function */ |
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getfunc(op, 1, 0, 0); |
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return(1); |
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case PAT_SPECFILE: /* spectrum file */ |
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if (op->oargs.nsargs < 1) |
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goto sargerr; |
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getdata(op->oargs.sarg[0]); |
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return(1); |
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case PAT_SPECDATA: /* spectral data file */ |
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if (op->oargs.nsargs < 2) |
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goto sargerr; |
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dp = getdata(op->oargs.sarg[1]); |
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getfunc(op, 2, ((1<<(dp->nd-1)) - 1)<<3, 0); |
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return(1); |
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case PAT_SPECPICT: /* spectral picture */ |
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if (op->oargs.nsargs < 2) |
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goto sargerr; |
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getspec(op->oargs.sarg[1]); |
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getfunc(op, 2, 0x3<<3, 0); |
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return(1); |
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case TEX_DATA: /* texture data */ |
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if (op->oargs.nsargs < 6) |
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goto sargerr; |
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dp = getdata(op->oargs.sarg[3]); |
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getdata(op->oargs.sarg[4]); |
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getdata(op->oargs.sarg[5]); |
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getfunc(op, 6, ((1<<dp->nd)-1)<<7, 1); |
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return(1); |
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case TEX_FUNC: /* texture function */ |
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getfunc(op, 3, 0x7, 1); |
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return(1); |
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case MIX_DATA: /* mixture data */ |
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dp = getdata(op->oargs.sarg[3]); |
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getfunc(op, 4, ((1<<dp->nd)-1)<<5, 0); |
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return(1); |
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case MIX_PICT: /* mixture picture */ |
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getpict(op->oargs.sarg[3]); |
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getfunc(op, 4, 0x3<<5, 0); |
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return(1); |
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case MIX_FUNC: /* mixture function */ |
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getfunc(op, 3, 0x4, 0); |
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return(1); |
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case MAT_PLASTIC2: /* anisotropic plastic */ |
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case MAT_METAL2: /* anisotropic metal */ |
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getfunc(op, 3, 0x7, 1); |
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return(1); |
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case MAT_WGMDF: /* WGMDfunc material */ |
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getfunc(op, 12, 0xEEE, 1); |
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return(1); |
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case MAT_BRTDF: /* BRDTfunc material */ |
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getfunc(op, 9, 0x3f, 0); |
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return(1); |
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case MAT_BSDF: /* BSDF material */ |
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if (op->oargs.nsargs < 6) |
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goto sargerr; |
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getfunc(op, 5, 0x1d, 1); |
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sd = loadBSDF(op->oargs.sarg[1]); |
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if (sd != NULL) SDfreeCache(sd); |
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return(1); |
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case MAT_ABSDF: /* aBSDF material */ |
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if (op->oargs.nsargs < 5) |
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goto sargerr; |
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getfunc(op, 4, 0xe, 1); |
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sd = loadBSDF(op->oargs.sarg[0]); |
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if (sd != NULL) SDfreeCache(sd); |
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return(1); |
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case MAT_PDATA: /* plastic BRDF data */ |
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case MAT_MDATA: /* metal BRDF data */ |
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case MAT_TDATA: /* trans BRDF data */ |
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if (op->oargs.nsargs < 2) |
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goto sargerr; |
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getdata(op->oargs.sarg[1]); |
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getfunc(op, 2, 0, 0); |
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return(1); |
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case MAT_PFUNC: /* plastic BRDF func */ |
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case MAT_MFUNC: /* metal BRDF func */ |
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case MAT_TFUNC: /* trans BRDF func */ |
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getfunc(op, 1, 0, 0); |
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return(1); |
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case MAT_DIRECT1: /* prism1 material */ |
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getfunc(op, 4, 0xf, 1); |
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return(1); |
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case MAT_DIRECT2: /* prism2 material */ |
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getfunc(op, 8, 0xff, 1); |
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return(1); |
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} |
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/* nothing to load for the remaining types */ |
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return(0); |
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sargerr: |
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objerror(op, USER, "too few string arguments"); |
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return 0; /* pro forma return */ |
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} |
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|
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|
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void |
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preload_objs(void) /* preload object data structures */ |
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{ |
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OBJECT on; |
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/* note that nobjects may change during loop */ |
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for (on = 0; on < nobjects; on++) |
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load_os(objptr(on)); |
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} |
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|
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|
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void |
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cow_memshare(void) /* set up copy-on-write memory sharing */ |
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{ |
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if (shm_boundary != NULL) |
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return; /* assume we're good */ |
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|
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preload_objs(); /* preload auxiliary data */ |
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/* set shared memory boundary */ |
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shm_boundary = (char *)malloc(16); |
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strcpy(shm_boundary, "SHM_BOUNDARY"); |
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} |
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|
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|
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void |
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cow_doneshare(void) /* clear memory sharing boundary */ |
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{ |
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if (shm_boundary == NULL) |
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return; |
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/* clear shared memory boundary */ |
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free((void *)shm_boundary); |
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shm_boundary = NULL; |
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} |
