ViewVC Help
View File | Revision Log | Show Annotations | Download File | Root Listing
root/radiance/ray/src/util/ranimove1.c
Revision: 3.18
Committed: Fri Sep 28 22:20:49 2012 UTC (11 years, 7 months ago) by greg
Content type: text/plain
Branch: MAIN
Changes since 3.17: +72 -18 lines
Log Message:
Added MNAME and ZNAME variables to ranimove

File Contents

# User Rev Content
1 greg 3.1 #ifndef lint
2 greg 3.18 static const char RCSid[] = "$Id: ranimove1.c,v 3.17 2011/05/20 02:06:39 greg Exp $";
3 greg 3.1 #endif
4     /*
5     * ranimove1.c
6     *
7 greg 3.11 * Basic frame rendering routines for ranimove(1).
8 greg 3.1 *
9     * Created by Gregory Ward on Wed Jan 08 2003.
10     */
11    
12 greg 3.2 #include "copyright.h"
13 greg 3.1
14 schorsch 3.4 #include <string.h>
15    
16 schorsch 3.3 #include "platform.h"
17 greg 3.1 #include "ranimove.h"
18     #include "otypes.h"
19 schorsch 3.8 #include "source.h"
20 greg 3.1 #include "random.h"
21    
22     double acctab[256]; /* accuracy value table */
23    
24     int hres, vres; /* frame resolution (fcur) */
25     double pixaspect; /* pixel aspect ratio */
26    
27     VIEW vw; /* view for this frame */
28     COLOR *cbuffer; /* color at each pixel */
29     float *zbuffer; /* depth at each pixel */
30     OBJECT *obuffer; /* object id at each pixel */
31     short *xmbuffer; /* x motion at each pixel */
32     short *ymbuffer; /* y motion at each pixel */
33 greg 3.17 uby8 *abuffer; /* accuracy at each pixel */
34     uby8 *sbuffer; /* sample count per pixel */
35 greg 3.1
36     VIEW vwprev; /* last frame's view */
37     COLOR *cprev; /* last frame colors */
38     float *zprev; /* last frame depth */
39     OBJECT *oprev; /* last frame objects */
40 greg 3.17 uby8 *aprev; /* last frame accuracy */
41 greg 3.1
42     float *cerrmap; /* conspicuous error map */
43     COLOR *val2map; /* value-squared map for variance */
44    
45     double frm_stop; /* when to stop rendering this frame */
46    
47     double hlsmax; /* maximum high-level saliency this frame */
48    
49    
50 schorsch 3.8 static void next_frame(void);
51     static int sample_here(int x, int y);
52     static int offset_cmp(const void *p1, const void *p2);
53     static void setmotion(int n, FVECT wpos);
54     static void init_frame_sample(void);
55    
56    
57 greg 3.14 #if 0
58 schorsch 3.8 extern void
59     write_map( /* write out float map (debugging) */
60     float *mp,
61     char *fn
62     )
63 greg 3.1 {
64     FILE *fp = fopen(fn, "w");
65     COLOR scanbuf[2048];
66     int x, y;
67    
68     if (fp == NULL)
69     return;
70     newheader("RADIANCE", fp);
71     fputformat(COLRFMT, fp);
72     fputc('\n', fp); /* end header */
73     fprtresolu(hres, vres, fp);
74     for (y = vres; y--; ) { /* write scanlines */
75     float *bp = mp + (y+1)*hres - 1;
76     for (x = hres; x--; bp--)
77     setcolor(scanbuf[x], *bp, *bp, *bp);
78     if (fwritescan(scanbuf, hres, fp) < 0)
79     break;
80     }
81     fclose(fp);
82     }
83 greg 3.14 #endif
84 greg 3.1
85    
86     static void
87 schorsch 3.8 next_frame(void) /* prepare next frame buffer */
88 greg 3.1 {
89     VIEW *fv;
90     char *err;
91     /* get previous view */
92     if (vw.type != 0)
93 schorsch 3.5 vwprev = vw;
94 greg 3.1 else if (fcur > 1 && (fv = getview(fcur-1)) != NULL) {
95 schorsch 3.5 vwprev = *fv;
96 greg 3.1 if (setview(&vwprev) != NULL)
97     vwprev.type = 0;
98     }
99     /* get current view */
100     if ((fv = getview(fcur)) == NULL) {
101     sprintf(errmsg, "cannot get view for frame %d", fcur);
102     error(USER, errmsg);
103     }
104 schorsch 3.5 vw = *fv;
105 greg 3.1 if ((err = setview(&vw)) != NULL) {
106     sprintf(errmsg, "view error at frame %d: %s", fcur, err);
107     error(USER, errmsg);
108     }
109     if (cbuffer == NULL) {
110 greg 3.16 int n;
111 greg 3.1 /* compute resolution and allocate */
112     switch (sscanf(vval(RESOLUTION), "%d %d %lf",
113     &hres, &vres, &pixaspect)) {
114     case 1:
115     vres = hres;
116     /* fall through */
117     case 2:
118     pixaspect = 1.;
119     /* fall through */
120     case 3:
121 schorsch 3.6 if ((hres > 0) & (vres > 0))
122 greg 3.1 break;
123     /* fall through */
124     default:
125     sprintf(errmsg, "bad %s value", vnam(RESOLUTION));
126     error(USER, errmsg);
127     }
128     normaspect(viewaspect(&vw), &pixaspect, &hres, &vres);
129     cbuffer = (COLOR *)malloc(sizeof(COLOR)*hres*vres);
130     zbuffer = (float *)malloc(sizeof(float)*hres*vres);
131     obuffer = (OBJECT *)malloc(sizeof(OBJECT)*hres*vres);
132     xmbuffer = (short *)malloc(sizeof(short)*hres*vres);
133     ymbuffer = (short *)malloc(sizeof(short)*hres*vres);
134 greg 3.17 abuffer = (uby8 *)calloc(hres*vres, sizeof(uby8));
135     sbuffer = (uby8 *)calloc(hres*vres, sizeof(uby8));
136 greg 3.1 cprev = (COLOR *)malloc(sizeof(COLOR)*hres*vres);
137     zprev = (float *)malloc(sizeof(float)*hres*vres);
138     oprev = (OBJECT *)malloc(sizeof(OBJECT)*hres*vres);
139 greg 3.17 aprev = (uby8 *)malloc(sizeof(uby8)*hres*vres);
140 schorsch 3.6 if ((cbuffer==NULL) | (zbuffer==NULL) | (obuffer==NULL) |
141     (xmbuffer==NULL) | (ymbuffer==NULL) |
142     (abuffer==NULL) | (sbuffer==NULL) |
143     (cprev==NULL) | (zprev == NULL) |
144     (oprev==NULL) | (aprev==NULL))
145 greg 3.1 error(SYSTEM, "out of memory in init_frame");
146 greg 3.16 for (n = hres*vres; n--; ) {
147     zprev[n] = -1.f;
148 greg 3.18 xmbuffer[n] = ymbuffer[n] = MO_UNK;
149 greg 3.16 oprev[n] = OVOID;
150     }
151 greg 3.1 frm_stop = getTime() + rtperfrm;
152     } else {
153     COLOR *cp; /* else just swap buffers */
154     float *fp;
155     OBJECT *op;
156 greg 3.17 uby8 *bp;
157 greg 3.1 cp = cprev; cprev = cbuffer; cbuffer = cp;
158     fp = zprev; zprev = zbuffer; zbuffer = fp;
159     op = oprev; oprev = obuffer; obuffer = op;
160     bp = aprev; aprev = abuffer; abuffer = bp;
161 greg 3.17 memset(abuffer, '\0', sizeof(uby8)*hres*vres);
162     memset(sbuffer, '\0', sizeof(uby8)*hres*vres);
163 greg 3.1 frm_stop += rtperfrm;
164     }
165     cerrmap = NULL;
166     val2map = NULL;
167     }
168    
169    
170     #define SAMPDIST 3 /* Maximum distance to neighbor sample */
171     #define SAMPDIST2 (SAMPDIST*SAMPDIST)
172    
173    
174     static int
175 schorsch 3.8 sample_here( /* 4x4 quincunx sample at this pixel? */
176 greg 3.18 int x,
177     int y
178 schorsch 3.8 )
179 greg 3.1 {
180     if (y & 0x1) /* every other row has samples */
181     return(0);
182     if (y & 0x3) /* every fourth row is offset */
183     x += 2;
184     return((x & 0x3) == 0); /* every fourth column is sampled */
185     }
186    
187    
188 schorsch 3.8 extern void
189     sample_pos( /* compute jittered sample position */
190     double hv[2],
191     int x,
192     int y,
193     int sn
194     )
195 greg 3.1 {
196     int hl[2];
197    
198     hl[0] = x; hl[1] = y;
199     multisamp(hv, 2, urand(ilhash(hl,2) + sn));
200     hv[0] = ((double)x + hv[0]) / (double)hres;
201     hv[1] = ((double)y + hv[1]) / (double)vres;
202     }
203    
204    
205 schorsch 3.8 extern double
206     sample_wt( /* compute interpolant sample weight */
207     int xo,
208     int yo
209     )
210 greg 3.1 {
211     static double etab[400];
212 schorsch 3.7 /* we can't use the name rad2 here, for some reason Visual C
213     thinks that is a constant (compiler bug?) */
214     int rad_2 = xo*xo + yo*yo;
215 greg 3.1 int i;
216    
217     if (etab[0] <= FTINY) /* initialize exponent table */
218     for (i = 400; i--; )
219     etab[i] = exp(-0.1*i);
220    
221     /* look up Gaussian */
222 schorsch 3.7 i = (int)((10.*3./(double)SAMPDIST2)*rad_2 + .5);
223 greg 3.1 if (i >= 400)
224     return(0.0);
225     return(etab[i]);
226     }
227    
228    
229     static int
230 schorsch 3.8 offset_cmp( /* compare offset distances */
231     const void *p1,
232     const void *p2
233     )
234 greg 3.1 {
235     return(*(const int *)p1 - *(const int *)p2);
236     }
237    
238    
239 schorsch 3.8 extern int
240     getclosest( /* get nc closest neighbors on same object */
241     int *iarr,
242     int nc,
243     int x,
244     int y
245     )
246 greg 3.1 {
247     #define NSCHECK ((2*SAMPDIST+1)*(2*SAMPDIST+1))
248     static int hro, vro;
249     static int ioffs[NSCHECK];
250     OBJECT myobj;
251     int i0, nf;
252 greg 3.18 int i, j;
253 greg 3.1 /* get our object number */
254     myobj = obuffer[fndx(x, y)];
255     /* special case for borders */
256 schorsch 3.6 if ((x < SAMPDIST) | (x >= hres-SAMPDIST) |
257     (y < SAMPDIST) | (y >= vres-SAMPDIST)) {
258 greg 3.1 int tndx[NSCHECK][2];
259     nf = 0;
260     for (j = y - SAMPDIST; j <= y + SAMPDIST; j++) {
261     if (j >= vres) break;
262     if (j < 0) j = 0;
263     for (i = x - SAMPDIST; i <= x + SAMPDIST; i++) {
264     if (i >= hres) break;
265     if (i < 0) i = 0;
266     i0 = fndx(i, j);
267     if (!sbuffer[i0])
268     continue;
269 schorsch 3.6 if ((myobj != OVOID) & (obuffer[i0] != myobj))
270 greg 3.1 continue;
271     tndx[nf][0] = (i-x)*(i-x) + (j-y)*(j-y);
272     tndx[nf][1] = i0;
273     nf++;
274     }
275     }
276     qsort((void *)tndx, nf, 2*sizeof(int), offset_cmp);
277     if (nf > nc)
278     nf = nc;
279     for (i = nf; i--; )
280     iarr[i] = tndx[i][1];
281     return(nf);
282     }
283     /* initialize offset array */
284 schorsch 3.6 if ((hres != hro) | (vres != vro)) {
285 greg 3.1 int toffs[NSCHECK][2];
286     i0 = fndx(SAMPDIST, SAMPDIST);
287     nf = 0;
288     for (i = 0; i <= 2*SAMPDIST; i++)
289     for (j = 0; j <= 2*SAMPDIST; j++) {
290     toffs[nf][0] = (i-SAMPDIST)*(i-SAMPDIST) +
291     (j-SAMPDIST)*(j-SAMPDIST);
292     toffs[nf][1] = fndx(i, j) - i0;
293     nf++;
294     }
295     qsort((void *)toffs, nf, 2*sizeof(int), offset_cmp);
296     for (i = NSCHECK; i--; )
297     ioffs[i] = toffs[i][1];
298     hro = hres;
299     vro = vres;
300     }
301     /* find up to nc neighbors */
302     i0 = fndx(x, y);
303 schorsch 3.6 for (j = 0, nf = 0; (j < NSCHECK) & (nf < nc); j++) {
304 greg 3.1 i = i0 + ioffs[j];
305 schorsch 3.6 if (sbuffer[i] && (myobj == OVOID) | (obuffer[i] == myobj))
306 greg 3.1 iarr[nf++] = i;
307     }
308     /* return number found */
309     return(nf);
310     #undef NSCHECK
311     }
312    
313    
314     static void
315 schorsch 3.8 setmotion( /* compute motion vector for this pixel */
316 greg 3.18 int n,
317 schorsch 3.8 FVECT wpos
318     )
319 greg 3.1 {
320     FVECT ovp;
321     int moi;
322     int xp, yp;
323     /* ID object and update maximum HLS */
324     moi = getmove(obuffer[n]);
325     if (moi >= 0 && obj_move[moi].cprio > hlsmax)
326     hlsmax = obj_move[moi].cprio;
327     if (vwprev.type == 0) /* return leaves MO_UNK */
328     return;
329     if (moi >= 0) { /* move object point back */
330     multp3(ovp, wpos, obj_move[moi].bxfm);
331     wpos = ovp;
332     }
333     viewloc(ovp, &vwprev, wpos);
334     if (ovp[2] <= FTINY)
335     return;
336     xp = (int)(ovp[0]*hres);
337     yp = (int)(ovp[1]*vres);
338     xmbuffer[n] = xp - (n % hres);
339     ymbuffer[n] = yp - (n / hres);
340 schorsch 3.6 if ((xp < 0) | (xp >= hres))
341 greg 3.1 return;
342 schorsch 3.6 if ((yp < 0) | (yp >= vres))
343 greg 3.1 return;
344     n = fndx(xp, yp);
345 schorsch 3.6 if ((zprev[n] < 0.97*ovp[2]) | (zprev[n] > 1.03*ovp[2]))
346 greg 3.1 oprev[n] = OVOID; /* assume it's a bad match */
347     }
348    
349    
350     static void
351 schorsch 3.8 init_frame_sample(void) /* sample our initial frame */
352 greg 3.1 {
353     RAY ir;
354     int x, y;
355 greg 3.18 int n;
356 greg 3.1
357     if (!silent) {
358     printf("\tComputing initial samples...");
359     fflush(stdout);
360     }
361     hlsmax = CSF_SMN;
362     for (y = vres; y--; )
363     for (x = hres; x--; ) {
364     double hv[2];
365     n = fndx(x, y);
366     xmbuffer[n] = MO_UNK;
367     ymbuffer[n] = MO_UNK;
368     sample_pos(hv, x, y, 0);
369     ir.rmax = viewray(ir.rorg, ir.rdir, &vw, hv[0], hv[1]);
370     if (ir.rmax < -FTINY) {
371     setcolor(cbuffer[n], 0., 0., 0.);
372     zbuffer[n] = FHUGE;
373     obuffer[n] = OVOID;
374     abuffer[n] = ADISTANT;
375     continue;
376     }
377     if (!sample_here(x, y)) { /* just cast */
378 greg 3.10 rayorigin(&ir, PRIMARY, NULL, NULL);
379 greg 3.1 if (!localhit(&ir, &thescene)) {
380 greg 3.16 if (ir.ro != &Aftplane && sourcehit(&ir)) {
381     rayshade(&ir, ir.ro->omod);
382     rayparticipate(&ir);
383     }
384 greg 3.1 copycolor(cbuffer[n], ir.rcol);
385     zbuffer[n] = ir.rot;
386     obuffer[n] = ir.robj;
387     abuffer[n] = ADISTANT;
388     sbuffer[n] = 1;
389     } else {
390     zbuffer[n] = ir.rot;
391     obuffer[n] = ir.robj;
392     setmotion(n, ir.rop);
393     }
394     continue;
395     }
396     if (nprocs > 1) { /* get sample */
397     int rval;
398 greg 3.10 rayorigin(&ir, PRIMARY, NULL, NULL);
399 greg 3.1 ir.rno = n;
400     rval = ray_pqueue(&ir);
401     if (!rval)
402     continue;
403     if (rval < 0)
404     quit(1);
405     n = ir.rno;
406     } else
407     ray_trace(&ir);
408     copycolor(cbuffer[n], ir.rcol);
409     zbuffer[n] = ir.rot;
410     obuffer[n] = ir.robj;
411     sbuffer[n] = 1;
412 greg 3.16 if (ir.rot >= 0.99*FHUGE)
413 greg 3.1 abuffer[n] = ADISTANT;
414     else {
415     abuffer[n] = ALOWQ;
416     setmotion(n, ir.rop);
417     }
418     }
419     if (nprocs > 1) /* get stragglers */
420     while (ray_presult(&ir, 0)) {
421     n = ir.rno;
422     copycolor(cbuffer[n], ir.rcol);
423     zbuffer[n] = ir.rot;
424     obuffer[n] = ir.robj;
425     sbuffer[n] = 1;
426     if (ir.rot >= FHUGE)
427     abuffer[n] = ADISTANT;
428     else {
429     abuffer[n] = ALOWQ;
430     setmotion(n, ir.rop);
431     }
432     }
433     /* ambiguate object boundaries */
434     for (y = vres-1; y--; )
435     for (x = hres-1; x--; ) {
436     OBJECT obj;
437     n = fndx(x, y);
438     if ((obj = obuffer[n]) == OVOID)
439     continue;
440 schorsch 3.6 if ((obuffer[n+1] != OVOID) & (obuffer[n+1] != obj)) {
441 greg 3.1 obuffer[n] = OVOID;
442     obuffer[n+1] = OVOID;
443     }
444 schorsch 3.6 if ((obuffer[n+hres] != OVOID) & (obuffer[n+hres] != obj)) {
445 greg 3.1 obuffer[n] = OVOID;
446     obuffer[n+hres] = OVOID;
447     }
448     }
449    
450     if (!silent)
451     printf("done\n");
452     }
453    
454    
455 schorsch 3.8 extern int
456     getambcolor( /* get ambient color for object if we can */
457     COLOR clr,
458     int obj
459     )
460 greg 3.1 {
461 greg 3.18 OBJREC *op;
462 greg 3.1
463     if (obj == OVOID)
464     return(0);
465 greg 3.16 op = objptr(obj); /* search for material */
466     if (op->omod == OVOID)
467     return(0);
468     op = findmaterial(objptr(op->omod));
469     if (op == NULL)
470 greg 3.1 return(0);
471     /*
472     * Since this routine is called to compute the difference
473     * from rendering with and without interreflections,
474     * we don't want to return colors for materials that are
475     * explicitly excluded from the HQ ambient calculation.
476     */
477     if (hirendparams.ambincl >= 0) {
478     int i;
479     char *lv;
480     for (i = 0; (lv = rpambmod(&hirendparams,i)) != NULL; i++)
481     if (lv[0] == op->oname[0] &&
482     !strcmp(lv+1, op->oname+1))
483     break;
484 greg 3.16 if ((lv != NULL) ^ hirendparams.ambincl)
485 greg 3.1 return(0);
486     }
487     switch (op->otype) {
488     case MAT_PLASTIC:
489     case MAT_METAL:
490     case MAT_PLASTIC2:
491     case MAT_METAL2:
492     case MAT_PFUNC:
493     case MAT_MFUNC:
494     case MAT_PDATA:
495     case MAT_MDATA:
496     case MAT_TRANS:
497     case MAT_TRANS2:
498     case MAT_TFUNC:
499     case MAT_TDATA:
500     if (op->oargs.nfargs < 3)
501     return(0);
502     setcolor(clr, op->oargs.farg[0], op->oargs.farg[1],
503     op->oargs.farg[2]);
504     return(1);
505     case MAT_BRTDF:
506     if (op->oargs.nfargs < 6)
507     return(0);
508     setcolor(clr, op->oargs.farg[0]+op->oargs.farg[3],
509     op->oargs.farg[1]+op->oargs.farg[4],
510     op->oargs.farg[2]+op->oargs.farg[5]);
511     scalecolor(clr, 0.5);
512     return(1);
513     case MAT_LIGHT:
514     case MAT_GLOW:
515     case MAT_ILLUM:
516     setcolor(clr, 0., 0., 0.);
517     return(1);
518     }
519     return(0);
520     }
521    
522    
523 schorsch 3.8 extern double
524     estimaterr( /* estimate relative error from samples */
525     COLOR cs,
526     COLOR cs2,
527     int ns,
528     int ns0
529     )
530 greg 3.1 {
531     double d, d2, brt;
532    
533     if (ns <= 1 || (brt = bright(cs)/ns) < 1e-14)
534     return(1.0);
535     /* use largest of RGB std. dev. */
536     d2 = colval(cs2,RED) - colval(cs,RED)*colval(cs,RED)/ns;
537     d = colval(cs2,GRN) - colval(cs,GRN)*colval(cs,GRN)/ns;
538     if (d > d2) d2 = d;
539     d = colval(cs2,BLU) - colval(cs,BLU)*colval(cs,BLU)/ns;
540     if (d > d2) d2 = d;
541     /* use s.d. if <= 1 central sample */
542     if (ns0 <= 1)
543     return(sqrt(d2/(ns-1))/brt);
544     /* use s.d./sqrt(ns0) otherwise */
545     return(sqrt(d2/((ns-1)*ns0))/brt);
546     }
547    
548    
549 schorsch 3.8 extern double
550     comperr( /* estimate relative error in neighborhood */
551     int *neigh,
552     int nc,
553     int ns0
554     )
555 greg 3.1 {
556     COLOR csum, csum2;
557     COLOR ctmp;
558     int i;
559     int ns;
560 greg 3.18 int n;
561 greg 3.1 /* add together samples */
562     setcolor(csum, 0., 0., 0.);
563     setcolor(csum2, 0., 0., 0.);
564 schorsch 3.6 for (i = 0, ns = 0; (i < nc) & (ns < NSAMPOK); i++) {
565 greg 3.1 n = neigh[i];
566     addcolor(csum, cbuffer[n]);
567     if (val2map != NULL) {
568     addcolor(csum2, val2map[n]);
569     ns += sbuffer[n];
570     continue;
571     }
572     if (sbuffer[n] != 1)
573     error(CONSISTENCY, "bad count in comperr");
574     setcolor(ctmp,
575     colval(cbuffer[n],RED)*colval(cbuffer[n],RED),
576     colval(cbuffer[n],GRN)*colval(cbuffer[n],GRN),
577     colval(cbuffer[n],BLU)*colval(cbuffer[n],BLU));
578     addcolor(csum2, ctmp);
579     ns++;
580     }
581     return(estimaterr(csum, csum2, ns, ns0));
582     }
583    
584    
585 schorsch 3.8 extern void
586     comp_frame_error(void) /* initialize frame error values */
587 greg 3.1 {
588 greg 3.17 uby8 *edone = NULL;
589 greg 3.1 COLOR objamb;
590     double eest;
591     int neigh[NSAMPOK];
592     int nc;
593 schorsch 3.8 int x, y, i;
594 greg 3.18 int n;
595 greg 3.1
596     if (!silent) {
597     printf("\tComputing error map\n");
598     fflush(stdout);
599     }
600     if (acctab[0] <= FTINY) /* initialize accuracy table */
601     for (i = 256; i--; )
602     acctab[i] = errorf(i);
603     /* estimate sample error */
604     if (!curparams->ambounce && hirendparams.ambounce) {
605     /*
606     * Our error estimate for the initial value is based
607     * on the assumption that most of it comes from the
608     * lack of an interreflection calculation. The relative
609     * error should be less than the ambient value divided
610     * by the returned ray value -- we take half of this.
611     */
612 greg 3.17 edone = (uby8 *)calloc(hres*vres, sizeof(uby8));
613 greg 3.1 for (y = vres; y--; )
614     for (x = hres; x--; ) {
615     n = fndx(x, y);
616 schorsch 3.6 if ((abuffer[n] != ALOWQ) | (obuffer[n] == OVOID))
617 greg 3.1 continue;
618     if (!getambcolor(objamb, obuffer[n]))
619     continue;
620     multcolor(objamb, ambval);
621     if ((eest = bright(cbuffer[n])) <= FTINY)
622     continue;
623     eest = bright(objamb) / eest;
624     if (eest > 1.) /* should we report this? */
625     continue;
626     eest *= 0.50; /* use 50% ambient error */
627     i = errori(eest);
628     if (i < AMIN) i = AMIN;
629     else if (i >= ADISTANT/2) i = ADISTANT/2-1;
630     abuffer[n] = i;
631     edone[n] = 1;
632     }
633     }
634     /* final statistical estimate */
635     for (y = vres; y--; )
636     for (x = hres; x--; ) {
637     n = fndx(x, y);
638     if (abuffer[n] == ADISTANT)
639     continue; /* don't update these */
640     if (edone != NULL && edone[n])
641     continue; /* already done this */
642     if (sbuffer[n] >= 255) {
643     abuffer[n] = ADISTANT;
644     continue; /* can't take any more */
645     }
646     nc = getclosest(neigh, NSAMPOK, x, y);
647     if (nc <= 0) {
648     abuffer[n] = ANOVAL;
649     continue; /* no clue what to do for him */
650     }
651     i = errori(comperr(neigh, nc, sbuffer[n]));
652     if (i < AMIN) i = AMIN;
653     else if (i >= ADISTANT) i = ADISTANT-1;
654     abuffer[n] = i;
655     /* can't be better than closest */
656     if (i < abuffer[neigh[0]] && abuffer[neigh[0]] >= AMIN)
657     abuffer[n] = abuffer[neigh[0]];
658     }
659     if (edone != NULL)
660     free((void *)edone);
661     }
662    
663    
664 schorsch 3.8 extern void
665     init_frame(void) /* render base (low quality) frame */
666 greg 3.1 {
667     int restart;
668     /* allocate/swap buffers */
669     next_frame();
670     /* check rendering status */
671     restart = (!nobjects || vdef(MOVE));
672     if (!restart && curparams != &lorendparams && nprocs > 1)
673     restart = -1;
674     /* post low quality parameters */
675     if (curparams != &lorendparams)
676     ray_restore(curparams = &lorendparams);
677     if (restart > 0) { /* load new octree */
678     char *oct = getoctspec(fcur);
679     if (oct == NULL) {
680     sprintf(errmsg, "cannot get scene for frame %d", fcur);
681     error(USER, errmsg);
682     }
683     if (!silent) {
684     printf("\tLoading octree...");
685     fflush(stdout);
686     }
687     if (nprocs > 1)
688     ray_pinit(oct, nprocs);
689     else
690     ray_init(oct);
691     } else if (restart < 0) { /* update children */
692     if (!silent) {
693     printf("\tRestarting %d processes...", nprocs);
694     fflush(stdout);
695     }
696     ray_pclose(0);
697     ray_popen(nprocs);
698     }
699     if (restart && !silent)
700     printf("done\n");
701     /* sample frame buffer */
702     init_frame_sample();
703     /* initialize frame error */
704     comp_frame_error();
705 greg 3.14 #if 0
706 greg 3.1 {
707     float *ebuf = (float *)malloc(sizeof(float)*hres*vres);
708     char fnm[256];
709 greg 3.18 int n;
710 greg 3.1 for (n = hres*vres; n--; )
711     ebuf[n] = acctab[abuffer[n]];
712     sprintf(fnm, vval(BASENAME), fcur);
713     strcat(fnm, "_inerr.pic");
714     write_map(ebuf, fnm);
715     free((void *)ebuf);
716     }
717 greg 3.14 #endif
718 greg 3.1 }
719    
720    
721 schorsch 3.8 extern void
722     filter_frame(void) /* interpolation, motion-blur, and exposure */
723 greg 3.1 {
724     double expval = expspec_val(getexp(fcur));
725     int x, y;
726     int neigh[NPINTERP];
727     int nc;
728     COLOR cval;
729     double w, wsum;
730 greg 3.18 int n;
731 greg 3.1
732     #if 0
733 schorsch 3.8 /* XXX TEMPORARY!! */
734     conspicuity();
735     write_map(cerrmap, "outcmap.pic");
736     {
737     float *ebuf = (float *)malloc(sizeof(float)*hres*vres);
738     for (n = hres*vres; n--; )
739     ebuf[n] = acctab[abuffer[n]];
740     write_map(ebuf, "outerr.pic");
741     free((void *)ebuf);
742     }
743 greg 3.1 #endif
744    
745     if (!silent) {
746     printf("\tFiltering frame\n");
747     fflush(stdout);
748     }
749 greg 3.9 /* normalize samples */
750     for (y = vres; y--; )
751     for (x = hres; x--; ) {
752     n = fndx(x, y);
753     if (sbuffer[n] <= 1)
754     continue;
755     w = 1.0/(double)sbuffer[n];
756     scalecolor(cbuffer[n], w);
757     }
758     /* interpolate samples */
759     for (y = vres; y--; )
760     for (x = hres; x--; ) {
761     n = fndx(x, y);
762     if (sbuffer[n])
763     continue;
764     nc = getclosest(neigh, NPINTERP, x, y);
765     setcolor(cbuffer[n], 0., 0., 0.);
766 greg 3.12 if (nc <= 0) { /* no acceptable neighbors */
767     if (y < vres-1)
768     nc = fndx(x, y+1);
769     else if (x < hres-1)
770     nc = fndx(x+1, y);
771     else
772     continue;
773     copycolor(cbuffer[n], cbuffer[nc]);
774     continue;
775     }
776 greg 3.9 wsum = 0.;
777     while (nc-- > 0) {
778     copycolor(cval, cbuffer[neigh[nc]]);
779     w = sample_wt((neigh[nc]%hres) - x,
780     (neigh[nc]/hres) - y);
781     scalecolor(cval, w);
782     addcolor(cbuffer[n], cval);
783     wsum += w;
784     }
785 greg 3.12 w = 1.0/wsum;
786     scalecolor(cbuffer[n], w);
787 greg 3.9 }
788     /* motion blur if requested */
789 greg 3.1 if (mblur > .02) {
790 greg 3.9 int xs, ys, xl, yl;
791     int rise, run;
792     long rise2, run2;
793     int n2;
794     int cnt;
795     /* sum in motion streaks */
796     memset(outbuffer, '\0', sizeof(COLOR)*hres*vres);
797     memset(wbuffer, '\0', sizeof(float)*hres*vres);
798     for (y = vres; y--; )
799     for (x = hres; x--; ) {
800 greg 3.1 n = fndx(x, y);
801     if (xmbuffer[n] == MO_UNK) {
802     run = rise = 0;
803     } else {
804     run = (int)(mblur*xmbuffer[n]);
805     rise = (int)(mblur*ymbuffer[n]);
806     }
807     if (!(run | rise)) {
808     addcolor(outbuffer[n], cbuffer[n]);
809     wbuffer[n] += 1.;
810     continue;
811     }
812     xl = x - run/4;
813     yl = y - rise/4;
814     if (run < 0) { xs = -1; run = -run; }
815     else xs = 1;
816     if (rise < 0) { ys = -1; rise = -rise; }
817     else ys = 1;
818     rise2 = run2 = 0L;
819     if (rise > run) {
820 greg 3.9 cnt = rise + 1;
821     w = 1./cnt;
822     copycolor(cval, cbuffer[n]);
823     scalecolor(cval, w);
824     while (cnt)
825     if (rise2 >= run2) {
826     if ((xl >= 0) & (xl < hres) &
827 schorsch 3.8 (yl >= 0) & (yl < vres)) {
828 greg 3.9 n2 = fndx(xl, yl);
829     addcolor(outbuffer[n2],
830     cval);
831     wbuffer[n2] += w;
832     }
833     yl += ys;
834     run2 += run;
835     cnt--;
836     } else {
837     xl += xs;
838     rise2 += rise;
839     }
840 greg 3.1 } else {
841     cnt = run + 1;
842     w = 1./cnt;
843     copycolor(cval, cbuffer[n]);
844     scalecolor(cval, w);
845 greg 3.9 while (cnt)
846     if (run2 >= rise2) {
847     if ((xl >= 0) & (xl < hres) &
848 schorsch 3.8 (yl >= 0) & (yl < vres)) {
849 greg 3.9 n2 = fndx(xl, yl);
850     addcolor(outbuffer[n2],
851     cval);
852     wbuffer[n2] += w;
853     }
854     xl += xs;
855     rise2 += rise;
856     cnt--;
857     } else {
858     yl += ys;
859     run2 += run;
860 greg 3.1 }
861 schorsch 3.8 }
862 greg 3.9 }
863     /* compute final results */
864     for (y = vres; y--; )
865     for (x = hres; x--; ) {
866     n = fndx(x, y);
867     if (wbuffer[n] <= FTINY)
868     continue;
869     w = 1./wbuffer[n];
870     scalecolor(outbuffer[n], w);
871     }
872     } else
873     for (n = hres*vres; n--; )
874 greg 3.1 copycolor(outbuffer[n], cbuffer[n]);
875 schorsch 3.8 /*
876     for (n = hres*vres; n--; )
877 greg 3.9 if (!sbuffer[n])
878     setcolor(outbuffer[n], 0., 0., 0.);
879 schorsch 3.8 */
880     /* adjust exposure */
881 schorsch 3.6 if ((expval < 0.99) | (expval > 1.01))
882 greg 3.1 for (n = hres*vres; n--; )
883     scalecolor(outbuffer[n], expval);
884 greg 3.9 #if 0
885 schorsch 3.8 {
886     float *sbuf = (float *)malloc(sizeof(float)*hres*vres);
887     char fnm[256];
888     sprintf(fnm, vval(BASENAME), fcur);
889     strcat(fnm, "_outsamp.pic");
890     for (n = hres*vres; n--; )
891     sbuf[n] = (float)sbuffer[n];
892     write_map(sbuf, fnm);
893     free((void *)sbuf);
894     }
895 greg 3.9 #endif
896 greg 3.1 }
897    
898    
899 schorsch 3.8 extern void
900     send_frame(void) /* send frame to destination */
901 greg 3.1 {
902 greg 3.18 char fname[1024];
903 greg 3.1 double d;
904     FILE *fp;
905     int y;
906     /* open output picture */
907 greg 3.18 sprintf(fname, vval(BASENAME), fcur);
908     strcat(fname, ".hdr");
909     fp = fopen(fname, "w");
910 greg 3.1 if (fp == NULL) {
911 greg 3.18 sprintf(errmsg, "cannot open output frame \"%s\"", fname);
912 greg 3.1 error(SYSTEM, errmsg);
913     }
914 schorsch 3.3 SET_FILE_BINARY(fp);
915 greg 3.1 if (!silent) {
916 greg 3.18 printf("\tWriting to \"%s\"\n", fname);
917 greg 3.1 fflush(stdout);
918     }
919     /* write header */
920     newheader("RADIANCE", fp);
921     printargs(gargc, gargv, fp);
922     fprintf(fp, "SOFTWARE= %s\n", VersionID);
923     fprintf(fp, "FRAME=%d\n", fcur);
924     fputnow(fp);
925     fputs(VIEWSTR, fp); fprintview(&vw, fp); fputc('\n', fp);
926     d = expspec_val(getexp(fcur));
927 schorsch 3.6 if ((d < 0.99) | (d > 1.01))
928 greg 3.1 fputexpos(d, fp);
929     d = viewaspect(&vw) * hres / vres;
930 schorsch 3.6 if ((d < 0.99) | (d > 1.01))
931 greg 3.1 fputaspect(d, fp);
932     fputformat(COLRFMT, fp);
933     fputc('\n', fp); /* end header */
934     fprtresolu(hres, vres, fp);
935     if (fflush(fp) == EOF)
936     goto writerr;
937     #if (PIXSTANDARD != (YMAJOR|YDECR))
938     error(CONSISTENCY, "bad code in send_frame");
939     #endif
940     for (y = vres; y--; ) /* write scanlines */
941     if (fwritescan(outbuffer+y*hres, hres, fp) < 0)
942     goto writerr;
943     if (fclose(fp) == EOF)
944     goto writerr;
945 greg 3.18 if (vdef(ZNAME)) { /* output z-buffer */
946     sprintf(fname, vval(ZNAME), fcur);
947     strcat(fname, ".zbf");
948     fp = fopen(fname, "w");
949     if (fp == NULL) {
950     sprintf(errmsg, "cannot open z-file \"%s\"\n", fname);
951     error(SYSTEM, errmsg);
952     }
953     SET_FILE_BINARY(fp);
954     if (!silent) {
955     printf("\tWriting depths to \"%s\"\n", fname);
956     fflush(stdout);
957     }
958     for (y = vres; y--; )
959     if (fwrite(zbuffer+y*hres, sizeof(float),
960     hres, fp) != hres)
961     goto writerr;
962     if (fclose(fp) == EOF)
963     goto writerr;
964     }
965     if (vdef(MNAME)) { /* output motion buffer */
966     unsigned short *mbuffer = (unsigned short *)malloc(
967     sizeof(unsigned short)*3*hres);
968     int x;
969     if (mbuffer == NULL)
970     error(SYSTEM, "out of memory in send_frame()");
971     sprintf(fname, vval(MNAME), fcur);
972     strcat(fname, ".mvo");
973     fp = fopen(fname, "w");
974     if (fp == NULL) {
975     sprintf(errmsg, "cannot open motion file \"%s\"\n",
976     fname);
977     error(SYSTEM, errmsg);
978     }
979     SET_FILE_BINARY(fp);
980     if (!silent) {
981     printf("\tWriting motion vectors to \"%s\"\n", fname);
982     fflush(stdout);
983     }
984     for (y = vres; y--; ) {
985     for (x = hres; x--; ) {
986     mbuffer[3*x] = xmbuffer[fndx(x,y)] + 0x8000;
987     mbuffer[3*x+1] = ymbuffer[fndx(x,y)] + 0x8000;
988     mbuffer[3*x+2] = (oprev[fndx(x,y)]!=OVOID)*0x8000;
989     }
990     if (fwrite(mbuffer, sizeof(*mbuffer),
991     3*hres, fp) != 3*hres)
992     goto writerr;
993     }
994     free((void *)mbuffer);
995     if (fclose(fp) == EOF)
996     goto writerr;
997     }
998 greg 3.1 return; /* all is well */
999     writerr:
1000 greg 3.18 sprintf(errmsg, "error writing file \"%s\"", fname);
1001 greg 3.1 error(SYSTEM, errmsg);
1002     }
1003    
1004    
1005 schorsch 3.8 extern void
1006     free_frame(void) /* free frame allocation */
1007 greg 3.1 {
1008     if (cbuffer == NULL)
1009     return;
1010     free((void *)cbuffer); cbuffer = NULL;
1011     free((void *)zbuffer); zbuffer = NULL;
1012     free((void *)obuffer); obuffer = NULL;
1013     free((void *)xmbuffer); xmbuffer = NULL;
1014     free((void *)ymbuffer); ymbuffer = NULL;
1015     free((void *)cprev); cprev = NULL;
1016     free((void *)zprev); zprev = NULL;
1017     free((void *)oprev); oprev = NULL;
1018     cerrmap = NULL;
1019     val2map = NULL;
1020     hres = vres = 0;
1021     vw.type = vwprev.type = 0;
1022     frm_stop = 0;
1023     }