1 |
#ifndef lint |
2 |
static const char RCSid[] = "$Id: ranimove2.c,v 3.3 2003/06/30 14:59:13 schorsch Exp $"; |
3 |
#endif |
4 |
/* |
5 |
* ranimove2.c |
6 |
* |
7 |
* Frame refinement routines for ranimate(1). |
8 |
* |
9 |
* Created by Gregory Ward on Wed Jan 08 2003. |
10 |
*/ |
11 |
|
12 |
#include "copyright.h" |
13 |
|
14 |
#include <string.h> |
15 |
|
16 |
#include "ranimove.h" |
17 |
#include "random.h" |
18 |
|
19 |
|
20 |
#define HL_ERR 0.32 /* highlight error threshold */ |
21 |
|
22 |
int cerrzero; /* is cerrmap all zeroes? */ |
23 |
|
24 |
|
25 |
int |
26 |
refine_first() /* initial refinement pass */ |
27 |
{ |
28 |
int *esamp = (int *)zprev; /* OK to reuse */ |
29 |
int hl_erri = errori(HL_ERR); |
30 |
int nextra = 0; |
31 |
int x, y, xp, yp; |
32 |
int neigh; |
33 |
register int n, np; |
34 |
|
35 |
if (sizeof(int) < sizeof(*zprev)) |
36 |
error(CONSISTENCY, "code error in refine_first"); |
37 |
if (!silent) { |
38 |
printf("\tFirst refinement pass..."); |
39 |
fflush(stdout); |
40 |
} |
41 |
memset((void *)esamp, '\0', sizeof(int)*hres*vres); |
42 |
/* |
43 |
* In our initial pass, we look for lower error pixels from |
44 |
* the same objects in the previous frame, and copy them here. |
45 |
*/ |
46 |
for (y = vres; y--; ) |
47 |
for (x = hres; x--; ) { |
48 |
n = fndx(x, y); |
49 |
if (obuffer[n] == OVOID) |
50 |
continue; |
51 |
if (xmbuffer[n] == MO_UNK) |
52 |
continue; |
53 |
xp = x + xmbuffer[n]; |
54 |
if ((xp < 0 | xp >= hres)) |
55 |
continue; |
56 |
yp = y + ymbuffer[n]; |
57 |
if ((yp < 0 | yp >= vres)) |
58 |
continue; |
59 |
np = fndx(xp, yp); |
60 |
/* make sure we hit same object */ |
61 |
if (oprev[np] != obuffer[n]) |
62 |
continue; |
63 |
/* is previous frame error lower? */ |
64 |
if (aprev[np] < AMIN + ATIDIFF) |
65 |
continue; |
66 |
if (aprev[np] <= abuffer[n] + ATIDIFF) |
67 |
continue; |
68 |
/* shadow & highlight detection */ |
69 |
if (abuffer[n] > hl_erri && |
70 |
getclosest(&neigh, 1, x, y) && |
71 |
bigdiff(cbuffer[neigh], cprev[np], |
72 |
HL_ERR*(.9+.2*frandom()))) |
73 |
continue; |
74 |
abuffer[n] = aprev[np] - ATIDIFF; |
75 |
copycolor(cbuffer[n], cprev[np]); |
76 |
esamp[n] = 1; /* record extrapolated sample */ |
77 |
nextra++; |
78 |
} |
79 |
for (n = hres*vres; n--; ) /* update sample counts */ |
80 |
if (esamp[n]) |
81 |
sbuffer[n] = 1; |
82 |
if (!silent) |
83 |
printf("extrapolated %d pixels\n", nextra); |
84 |
return(1); |
85 |
} |
86 |
|
87 |
|
88 |
/* |
89 |
* We use a recursive computation of the conspicuity |
90 |
* map to avoid associated memory costs and simplify |
91 |
* coding. We create a virtual image pyramid, pooling |
92 |
* variance calculations, etc. The top of the pyramid |
93 |
* corresponds to the foveal resolution, as there should |
94 |
* not be any interesting mechanisms above this level. |
95 |
*/ |
96 |
|
97 |
#define CSF_C0 1.14 |
98 |
#define CSF_C1 0.67 |
99 |
#define CSF_C2 1.7 |
100 |
#define CSF_S1 6.1 |
101 |
#define CSF_S2 7.3 |
102 |
#define CSF_P1 45.9 |
103 |
#define CSF_PC (30./45.9*CSF_P1) |
104 |
#define CSF_VR0 0.15 |
105 |
#define CSF_VRC 80. |
106 |
|
107 |
struct ConspSum { |
108 |
COLOR vsum; /* value sum */ |
109 |
COLOR v2sum; /* value^2 sum */ |
110 |
long nsamp; /* number of samples */ |
111 |
long xmsum; /* x-motion sum */ |
112 |
long ymsum; /* y-motion sum */ |
113 |
int npix; /* number of pixels */ |
114 |
double hls; /* high-level saliency */ |
115 |
}; |
116 |
|
117 |
static double pixel_deg; /* base pixel frequency */ |
118 |
static int fhsiz, fvsiz; /* foveal subimage size */ |
119 |
|
120 |
static void |
121 |
clr_consp(cs) /* initialize a conspicuity sum */ |
122 |
register struct ConspSum *cs; |
123 |
{ |
124 |
if (cs == NULL) |
125 |
return; |
126 |
setcolor(cs->vsum, 0., 0., 0.); |
127 |
setcolor(cs->v2sum, 0., 0., 0.); |
128 |
cs->nsamp = 0; |
129 |
cs->xmsum = cs->ymsum = 0; |
130 |
cs->npix = 0; |
131 |
cs->hls = 0; |
132 |
} |
133 |
|
134 |
static void |
135 |
sum_consp(cdest, cs) /* sum in conspicuity result */ |
136 |
register struct ConspSum *cdest, *cs; |
137 |
{ |
138 |
if ((cdest == NULL | cs == NULL)) |
139 |
return; |
140 |
addcolor(cdest->vsum, cs->vsum); |
141 |
addcolor(cdest->v2sum, cs->v2sum); |
142 |
cdest->nsamp += cs->nsamp; |
143 |
cdest->xmsum += cs->xmsum; |
144 |
cdest->ymsum += cs->ymsum; |
145 |
cdest->npix += cs->npix; |
146 |
if (cs->hls > cdest->hls) |
147 |
cdest->hls = cs->hls; |
148 |
} |
149 |
|
150 |
static void |
151 |
est_consp(x0,y0,x1,y1, cs) /* estimate error conspicuity & update */ |
152 |
int x0, y0, x1, y1; |
153 |
register struct ConspSum *cs; |
154 |
{ |
155 |
double rad2, mtn2, cpd, vm, vr, csf, eest; |
156 |
/* do we care? */ |
157 |
if (cs->hls <= FTINY) |
158 |
return; |
159 |
/* get relative error */ |
160 |
if (cs->nsamp < NSAMPOK) { |
161 |
int neigh[NSAMPOK]; /* gather neighbors */ |
162 |
eest = comperr(neigh, |
163 |
getclosest(neigh, NSAMPOK, (x0+x1)>>1, (y0+y1)>>1), |
164 |
cs->nsamp); |
165 |
} else |
166 |
eest = estimaterr(cs->vsum, cs->v2sum, cs->nsamp, cs->nsamp); |
167 |
|
168 |
if ((x0 == x1-1 & y0 == y1-1)) { /* update pixel error */ |
169 |
int n = fndx(x0, y0); |
170 |
int ai; |
171 |
int ne; |
172 |
if (sbuffer[n] >= 255) { |
173 |
abuffer[n] = ADISTANT; |
174 |
} else { |
175 |
ai = errori(eest); |
176 |
if (ai < AMIN) ai = AMIN; |
177 |
else if (ai >= ADISTANT) ai = ADISTANT-1; |
178 |
abuffer[n] = ai; |
179 |
/* can't improve on closest */ |
180 |
if (!cs->nsamp && getclosest(&ne, 1, x0, y0) && |
181 |
abuffer[ne] < ai && |
182 |
abuffer[ne] >= AMIN) |
183 |
abuffer[n] = abuffer[ne]; |
184 |
} |
185 |
} |
186 |
/* compute radius^2 */ |
187 |
rad2 = 0.125*((x1-x0)*(x1-x0) + (y1-y0)*(y1-y0)); |
188 |
|
189 |
/* average motion^2 */ |
190 |
mtn2 = (double)cs->xmsum*cs->xmsum + (double)cs->ymsum*cs->ymsum; |
191 |
mtn2 /= (double)(cs->npix*cs->npix); |
192 |
/* motion blur hides us? */ |
193 |
if (mblur*mblur*mtn2 >= 4.*rad2) |
194 |
return; |
195 |
/* too small to see? */ |
196 |
cpd = pixel_deg * pixel_deg / rad2; |
197 |
if (cpd > CSF_PC*CSF_PC) |
198 |
return; |
199 |
cpd = sqrt(cpd); |
200 |
/* compute CSF [Daley98] */ |
201 |
vm = rate * sqrt(mtn2) / pixel_deg; |
202 |
vr = cs->hls/hlsmax*vm + CSF_VR0; /* use hls tracking eff. */ |
203 |
if (vr > CSF_VRC) vr = CSF_VRC; |
204 |
vr = vm - vr; |
205 |
if (vr < 0) vr = -vr; |
206 |
csf = log(CSF_C2*(1./3.)*vr); |
207 |
if (csf < 0) csf = -csf; |
208 |
csf = CSF_S1 + CSF_S2*csf*csf*csf; |
209 |
csf *= CSF_C0*CSF_C2*4.*PI*PI*CSF_C1*CSF_C1*cpd*cpd; |
210 |
csf *= exp(-CSF_C1*4.*PI/CSF_P1*(CSF_C2*vr + 2.)*cpd); |
211 |
/* compute visible error */ |
212 |
eest = eest*csf/ndthresh - 1.; |
213 |
if (eest <= FTINY) |
214 |
return; |
215 |
/* scale by saleincy */ |
216 |
eest *= cs->hls; |
217 |
/* worth the bother? */ |
218 |
if (eest <= .01) |
219 |
return; |
220 |
/* sum into map */ |
221 |
for ( ; y0 < y1; y0++) { |
222 |
float *em0 = cerrmap + fndx(x0, y0); |
223 |
register float *emp = em0 + (x1-x0); |
224 |
while (emp-- > em0) |
225 |
*emp += eest; |
226 |
} |
227 |
cerrzero = 0; |
228 |
} |
229 |
|
230 |
static void |
231 |
subconspicuity(x0,y0,x1,y1, cs) /* compute subportion of conspicuity */ |
232 |
int x0, y0, x1, y1; |
233 |
struct ConspSum *cs; |
234 |
{ |
235 |
struct ConspSum mysum; |
236 |
int i; |
237 |
|
238 |
if ((x0 >= x1 | y0 >= y1)) |
239 |
error(CONSISTENCY, "bad call to subconspicuity"); |
240 |
|
241 |
clr_consp(&mysum); /* prepare sum */ |
242 |
|
243 |
if ((x0 == x1-1 & y0 == y1-1)) { /* single pixel */ |
244 |
double hls; |
245 |
register int n = fndx(x0, y0); |
246 |
if (sbuffer[n]) { |
247 |
copycolor(mysum.vsum, cbuffer[n]); |
248 |
copycolor(mysum.v2sum, val2map[n]); |
249 |
mysum.nsamp = sbuffer[n]; |
250 |
} |
251 |
if ((mysum.xmsum = xmbuffer[n]) == MO_UNK) |
252 |
mysum.xmsum = 0; |
253 |
else |
254 |
mysum.ymsum = ymbuffer[n]; |
255 |
mysum.npix = 1; |
256 |
/* max. hls in fovea */ |
257 |
mysum.hls = obj_prio(obuffer[n]); |
258 |
if (x0 >= fhsiz) { |
259 |
hls = obj_prio(obuffer[fndx(x0-fhsiz,y0)]); |
260 |
if (hls > mysum.hls) mysum.hls = hls; |
261 |
} |
262 |
if (x0 < hres-fhsiz) { |
263 |
hls = obj_prio(obuffer[fndx(x0+fhsiz,y0)]); |
264 |
if (hls > mysum.hls) mysum.hls = hls; |
265 |
} |
266 |
if (y0 >= fvsiz) { |
267 |
hls = obj_prio(obuffer[fndx(x0,y0-fvsiz)]); |
268 |
if (hls > mysum.hls) mysum.hls = hls; |
269 |
} |
270 |
if (y0 < vres-fvsiz) { |
271 |
hls = obj_prio(obuffer[fndx(x0,y0+fvsiz)]); |
272 |
if (hls > mysum.hls) mysum.hls = hls; |
273 |
} |
274 |
} else if (x0 == x1-1) { /* vertical pair */ |
275 |
for (i = y0 ; i < y1; i++) |
276 |
subconspicuity(x0, i, x1, i+1, &mysum); |
277 |
} else if (y0 == y1-1) { /* horizontal pair */ |
278 |
for (i = x0 ; i < x1; i++) |
279 |
subconspicuity(i, y0, i+1, y1, &mysum); |
280 |
} else { /* rectangle */ |
281 |
subconspicuity(x0, y0, (x0+x1)>>1, (y0+y1)>>1, &mysum); |
282 |
subconspicuity((x0+x1)>>1, y0, x1, (y0+y1)>>1, &mysum); |
283 |
subconspicuity(x0, (y0+y1)>>1, (x0+x1)>>1, y1, &mysum); |
284 |
subconspicuity((x0+x1)>>1, (y0+y1)>>1, x1, y1, &mysum); |
285 |
} |
286 |
/* update conspicuity */ |
287 |
est_consp(x0, y0, x1, y1, &mysum); |
288 |
/* sum into return value */ |
289 |
sum_consp(cs, &mysum); |
290 |
} |
291 |
|
292 |
void |
293 |
conspicuity() /* compute conspicuous error map */ |
294 |
{ |
295 |
int fhres, fvres; |
296 |
int fx, fy; |
297 |
/* reuse previous z-buffer */ |
298 |
cerrmap = (float *)zprev; |
299 |
memset((void *)cerrmap, '\0', sizeof(float)*hres*vres); |
300 |
cerrzero = 1; |
301 |
/* compute base pixel frequency */ |
302 |
pixel_deg = .5*(hres/vw.horiz + vres/vw.vert); |
303 |
/* compute foveal resolution */ |
304 |
fhres = vw.horiz/FOV_DEG + 0.5; |
305 |
if (fhres <= 0) fhres = 1; |
306 |
else if (fhres > hres) fhres = hres; |
307 |
fvres = vw.vert/FOV_DEG + 0.5; |
308 |
if (fvres <= 0) fvres = 1; |
309 |
else if (fvres > vres) fvres = vres; |
310 |
fhsiz = hres/fhres; |
311 |
fvsiz = vres/fvres; |
312 |
/* call our foveal subroutine */ |
313 |
for (fy = fvres; fy--; ) |
314 |
for (fx = fhres; fx--; ) |
315 |
subconspicuity(hres*fx/fhres, vres*fy/fvres, |
316 |
hres*(fx+1)/fhres, vres*(fy+1)/fvres, |
317 |
NULL); |
318 |
} |
319 |
|
320 |
|
321 |
/* |
322 |
* The following structure is used to collect data on the |
323 |
* initial error in the ambient value estimate, in order |
324 |
* to correct for it in the subsequent frames. |
325 |
*/ |
326 |
static struct AmbSum { |
327 |
double diffsum[3]; /* sum of (correct - ambval) */ |
328 |
long nsamps; /* number of values in sum */ |
329 |
} *asump = NULL; |
330 |
|
331 |
|
332 |
static int |
333 |
ppri_cmp(pp1, pp2) /* pixel priority comparison */ |
334 |
const void *pp1, *pp2; |
335 |
{ |
336 |
double se1 = cerrmap[*(const int *)pp1]; |
337 |
double se2 = cerrmap[*(const int *)pp2]; |
338 |
int adiff; |
339 |
/* higher conspicuity to front */ |
340 |
if (se1 < se2) return(1); |
341 |
if (se1 > se2) return(-1); |
342 |
/* else higher error to front */ |
343 |
adiff = (int)abuffer[*(const int *)pp1] - |
344 |
(int)abuffer[*(const int *)pp2]; |
345 |
if (adiff) |
346 |
return(adiff); |
347 |
/* else fewer samples to front */ |
348 |
return((int)sbuffer[*(const int *)pp1] - |
349 |
(int)sbuffer[*(const int *)pp2]); |
350 |
} |
351 |
|
352 |
|
353 |
static int |
354 |
ray_refine(n) /* refine the given pixel by tracing a ray */ |
355 |
register int n; |
356 |
{ |
357 |
RAY ir; |
358 |
int neigh[NSAMPOK]; |
359 |
int nc; |
360 |
COLOR ctmp; |
361 |
int i; |
362 |
|
363 |
if (n < 0) { /* fetching stragglers */ |
364 |
if (nprocs <= 1 || !ray_presult(&ir, 0)) |
365 |
return(-1); |
366 |
n = ir.rno; |
367 |
} else { /* else tracing a new ray */ |
368 |
double hv[2]; |
369 |
if (sbuffer[n] >= 255) /* reached limit? */ |
370 |
return(-1); |
371 |
sample_pos(hv, n%hres, n/hres, sbuffer[n]); |
372 |
ir.rmax = viewray(ir.rorg, ir.rdir, &vw, hv[0], hv[1]); |
373 |
if (ir.rmax < -FTINY) |
374 |
return(-1); |
375 |
if (nprocs > 1) { |
376 |
int rval; |
377 |
rayorigin(&ir, NULL, PRIMARY, 1.0); |
378 |
ir.rno = n; |
379 |
rval = ray_pqueue(&ir); |
380 |
if (!rval) |
381 |
return(-1); |
382 |
if (rval < 0) |
383 |
quit(1); |
384 |
n = ir.rno; |
385 |
} else |
386 |
ray_trace(&ir); |
387 |
} |
388 |
if (abuffer[n] == ALOWQ && asump != NULL) { |
389 |
if (sbuffer[n] != 1) |
390 |
error(CONSISTENCY, "bad code in ray_refine"); |
391 |
if (getambcolor(ctmp, obuffer[n]) && |
392 |
(colval(ctmp,RED) > 0.01 & |
393 |
colval(ctmp,GRN) > 0.01 & |
394 |
colval(ctmp,BLU) > 0.01)) { |
395 |
for (i = 0; i < 3; i++) |
396 |
asump->diffsum[i] += |
397 |
(colval(ir.rcol,i) - colval(cbuffer[n],i)) |
398 |
/ colval(ctmp,i); |
399 |
asump->nsamps++; |
400 |
} |
401 |
sbuffer[n] = 0; |
402 |
} |
403 |
setcolor(ctmp, |
404 |
colval(ir.rcol,RED)*colval(ir.rcol,RED), |
405 |
colval(ir.rcol,GRN)*colval(ir.rcol,GRN), |
406 |
colval(ir.rcol,BLU)*colval(ir.rcol,BLU)); |
407 |
if (!sbuffer[n]) { /* first sample */ |
408 |
copycolor(cbuffer[n], ir.rcol); |
409 |
copycolor(val2map[n], ctmp); |
410 |
abuffer[n] = AHIGHQ; |
411 |
sbuffer[n] = 1; |
412 |
} else { /* else sum in sample */ |
413 |
addcolor(cbuffer[n], ir.rcol); |
414 |
addcolor(val2map[n], ctmp); |
415 |
sbuffer[n]++; |
416 |
} |
417 |
return(n); |
418 |
} |
419 |
|
420 |
|
421 |
static long |
422 |
refine_rays(nrays) /* compute refinement rays */ |
423 |
long nrays; |
424 |
{ |
425 |
int *pord; |
426 |
int ntodo; |
427 |
long rdone; |
428 |
int i; |
429 |
/* skip if nothing significant */ |
430 |
if (ndtset && cerrzero) |
431 |
return(0); |
432 |
/* initialize priority list */ |
433 |
pord = (int *)malloc(sizeof(int)*hres*vres); |
434 |
for (i = hres*vres; i--; ) |
435 |
pord[i] = i; |
436 |
/* sort our priorities */ |
437 |
ntodo = hres*vres; |
438 |
if (nrays < ntodo) |
439 |
qsort((void *)pord, hres*vres, sizeof(int), ppri_cmp); |
440 |
i = 0; |
441 |
/* trace rays in list */ |
442 |
for (rdone = 0; rdone < nrays; rdone++) { |
443 |
if (ndtset && i >= 1000 && cerrmap[pord[i]] <= FTINY) |
444 |
ntodo = i; |
445 |
if (i >= ntodo) { /* redo conspicuity & priority */ |
446 |
while (ray_refine(-1) >= 0) |
447 |
; |
448 |
conspicuity(); |
449 |
if (ndtset && cerrzero) |
450 |
break; |
451 |
qsort((void *)pord, hres*vres, sizeof(int), ppri_cmp); |
452 |
ntodo = hres*vres/8; |
453 |
i = 0; |
454 |
} |
455 |
/* sample next pixel */ |
456 |
ray_refine(pord[i++]); |
457 |
} |
458 |
/* clean up and return */ |
459 |
while (ray_refine(-1) >= 0) |
460 |
; |
461 |
free((void *)pord); |
462 |
return(rdone); |
463 |
} |
464 |
|
465 |
|
466 |
int |
467 |
refine_frame(pass) /* refine current frame */ |
468 |
int pass; |
469 |
{ |
470 |
static double rtime_used = 0; |
471 |
static long ray_cnt = 0; |
472 |
static double ctime_used = 0; |
473 |
static int csp_cnt = 0; |
474 |
int timed = (fcur > fbeg | pass > 0 | quickstart); |
475 |
double time_start, rtime_start, time_done; |
476 |
struct AmbSum myAmbSum; |
477 |
long rays_todo, nr; |
478 |
register int n; |
479 |
/* IBR refinement? */ |
480 |
if ((pass == 0 & fcur > fbeg)) |
481 |
return(refine_first()); |
482 |
/* any time left? */ |
483 |
time_start = getTime(); |
484 |
if (timed) { |
485 |
if (time_start >= frm_stop) |
486 |
goto nomore; |
487 |
if (csp_cnt > 0 && time_start + ctime_used/csp_cnt >= frm_stop) |
488 |
goto nomore; |
489 |
} |
490 |
asump = NULL; /* use resampling to update ambval? */ |
491 |
if (!curparams->ambounce && hirendparams.ambounce) { |
492 |
myAmbSum.diffsum[RED] = |
493 |
myAmbSum.diffsum[GRN] = |
494 |
myAmbSum.diffsum[BLU] = 0; |
495 |
myAmbSum.nsamps = 0; |
496 |
asump = &myAmbSum; |
497 |
} |
498 |
/* initialize value-squared map */ |
499 |
if (val2map == NULL) { |
500 |
val2map = cprev; /* OK to reuse at this point */ |
501 |
n = (asump == NULL) ? hres*vres : 0; |
502 |
while (n--) |
503 |
if (sbuffer[n]) |
504 |
setcolor(val2map[n], |
505 |
colval(cbuffer[n],RED)*colval(cbuffer[n],RED), |
506 |
colval(cbuffer[n],GRN)*colval(cbuffer[n],GRN), |
507 |
colval(cbuffer[n],BLU)*colval(cbuffer[n],BLU)); |
508 |
else |
509 |
setcolor(val2map[n], 0., 0., 0.); |
510 |
} |
511 |
/* compute conspicuity */ |
512 |
if (!silent) { |
513 |
printf("\tComputing conspicuity map\n"); |
514 |
fflush(stdout); |
515 |
} |
516 |
conspicuity(); |
517 |
csp_cnt++; |
518 |
#if 0 |
519 |
if (pass == 1) { |
520 |
char fnm[256]; |
521 |
sprintf(fnm, vval(BASENAME), fcur); |
522 |
strcat(fnm, "_incmap.pic"); |
523 |
write_map(cerrmap, fnm); |
524 |
} |
525 |
#endif |
526 |
/* get ray start time */ |
527 |
rtime_start = getTime(); |
528 |
ctime_used += rtime_start - time_start; |
529 |
if (timed && rtime_start >= frm_stop) |
530 |
return(0); /* error done but out of time */ |
531 |
if (rtime_used <= FTINY) { |
532 |
if (quickstart) |
533 |
rays_todo = 1000; |
534 |
else |
535 |
rays_todo = hres*vres; |
536 |
} else { |
537 |
rays_todo = (long)((frm_stop - rtime_start) * |
538 |
ray_cnt / rtime_used); |
539 |
if (rays_todo < 1000) |
540 |
return(0); /* let's call it a frame */ |
541 |
} |
542 |
/* set higher rendering quality */ |
543 |
if (twolevels && curparams != &hirendparams) { |
544 |
ray_restore(curparams = &hirendparams); |
545 |
if (nprocs > 1) { /* need to update children */ |
546 |
if (!silent) { |
547 |
printf("\tRestarting %d processes\n", nprocs); |
548 |
fflush(stdout); |
549 |
} |
550 |
ray_pclose(0); |
551 |
ray_popen(nprocs); |
552 |
} |
553 |
} |
554 |
/* compute refinement rays */ |
555 |
if (!silent) { |
556 |
printf("\tRefinement pass %d...", |
557 |
pass+1, rays_todo); |
558 |
fflush(stdout); |
559 |
} |
560 |
if (asump != NULL) /* flag low-quality samples */ |
561 |
for (n = hres*vres; n--; ) |
562 |
if (sbuffer[n]) |
563 |
abuffer[n] = ALOWQ; |
564 |
/* trace those rays */ |
565 |
nr = refine_rays(rays_todo); |
566 |
if (!silent) |
567 |
printf("traced %d HQ rays\n", nr); |
568 |
if (nr <= 0) |
569 |
return(0); |
570 |
/* update timing stats */ |
571 |
while (ray_cnt >= 1L<<20) { |
572 |
ray_cnt >>= 1; |
573 |
rtime_used *= .5; |
574 |
} |
575 |
ray_cnt += nr; |
576 |
time_done = getTime(); |
577 |
rtime_used += time_done - rtime_start; |
578 |
if (!timed && time_done > frm_stop) |
579 |
frm_stop = time_done; |
580 |
/* update ambient value */ |
581 |
if (asump != NULL && asump->nsamps >= 1000) { |
582 |
double sf = 1./(double)asump->nsamps; |
583 |
for (n = 3; n--; ) { |
584 |
asump->diffsum[n] *= sf; |
585 |
asump->diffsum[n] += colval(lorendparams.ambval,n); |
586 |
if (asump->diffsum[n] < 0) asump->diffsum[n] = 0; |
587 |
} |
588 |
setcolor(lorendparams.ambval, |
589 |
asump->diffsum[RED], |
590 |
asump->diffsum[GRN], |
591 |
asump->diffsum[BLU]); |
592 |
if (!silent) |
593 |
printf("\tUpdated parameter: -av %f %f %f\n", |
594 |
asump->diffsum[RED], |
595 |
asump->diffsum[GRN], |
596 |
asump->diffsum[BLU]); |
597 |
asump = NULL; |
598 |
} |
599 |
return(1); |
600 |
nomore: |
601 |
/* make sure error map is updated */ |
602 |
if ((fcur == fbeg | pass > 1)) |
603 |
comp_frame_error(); |
604 |
return(0); |
605 |
} |