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