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/* Copyright (c) 1998 Silicon Graphics, Inc. */ |
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/* Copyright (c) 1999 Silicon Graphics, Inc. */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ SGI"; |
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#include "rholo.h" |
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#include "view.h" |
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#include <sys/types.h> |
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#ifndef NFRAG2CHUNK |
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#define NFRAG2CHUNK 4096 /* number of fragments to start chunking */ |
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ambient_list() /* compute ambient beam list */ |
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{ |
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long wtotal = 0; |
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int4 wtotal, minrt; |
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double frac; |
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int i; |
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register int j, k; |
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complist = (PACKHEAD *)malloc(complen*sizeof(PACKHEAD)); |
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CHECK(complist==NULL, SYSTEM, "out of memory in ambient_list"); |
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/* compute beam weights */ |
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k = 0; |
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k = 0; wtotal = 0; |
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for (j = 0; hdlist[j] != NULL; j++) { |
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frac = 512. * VLEN(hdlist[j]->wg[0]) * |
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VLEN(hdlist[j]->wg[1]) * |
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} |
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/* adjust sample weights */ |
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if (vdef(DISKSPACE)) |
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frac = 1024.*1024.*vflt(DISKSPACE) / |
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(wtotal*sizeof(RAYVAL)); |
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frac = 1024.*1024.*vflt(DISKSPACE) / (wtotal*sizeof(RAYVAL)); |
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else |
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frac = 1024.*1024.*16384. / (wtotal*sizeof(RAYVAL)); |
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if (frac > 1.11 || frac < 0.9) |
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for (k = complen; k--; ) |
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complist[k].nr = frac*complist[k].nr + 0.5; |
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frac = 1024.*1024.*2048. / (wtotal*sizeof(RAYVAL)); |
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minrt = .02*frac*wtotal/complen + .5; /* heuristic mimimum */ |
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if (minrt > RPACKSIZ) |
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minrt = RPACKSIZ; |
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for (k = complen; k--; ) |
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if ((complist[k].nr = frac*complist[k].nr + 0.5) < minrt) |
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complist[k].nr = minrt; |
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listpos = 0; lastin = -1; /* flag initial sort */ |
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} |
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