1 |
#ifndef lint |
2 |
static const char RCSid[] = "$Id: ranimove1.c,v 3.17 2011/05/20 02:06:39 greg Exp $"; |
3 |
#endif |
4 |
/* |
5 |
* ranimove1.c |
6 |
* |
7 |
* Basic frame rendering routines for ranimove(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 "platform.h" |
17 |
#include "ranimove.h" |
18 |
#include "otypes.h" |
19 |
#include "source.h" |
20 |
#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 |
uby8 *abuffer; /* accuracy at each pixel */ |
34 |
uby8 *sbuffer; /* sample count per pixel */ |
35 |
|
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 |
uby8 *aprev; /* last frame accuracy */ |
41 |
|
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 |
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 |
#if 0 |
58 |
extern void |
59 |
write_map( /* write out float map (debugging) */ |
60 |
float *mp, |
61 |
char *fn |
62 |
) |
63 |
{ |
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 |
#endif |
84 |
|
85 |
|
86 |
static void |
87 |
next_frame(void) /* prepare next frame buffer */ |
88 |
{ |
89 |
VIEW *fv; |
90 |
char *err; |
91 |
/* get previous view */ |
92 |
if (vw.type != 0) |
93 |
vwprev = vw; |
94 |
else if (fcur > 1 && (fv = getview(fcur-1)) != NULL) { |
95 |
vwprev = *fv; |
96 |
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 |
vw = *fv; |
105 |
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 |
int n; |
111 |
/* 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 |
if ((hres > 0) & (vres > 0)) |
122 |
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 |
abuffer = (uby8 *)calloc(hres*vres, sizeof(uby8)); |
135 |
sbuffer = (uby8 *)calloc(hres*vres, sizeof(uby8)); |
136 |
cprev = (COLOR *)malloc(sizeof(COLOR)*hres*vres); |
137 |
zprev = (float *)malloc(sizeof(float)*hres*vres); |
138 |
oprev = (OBJECT *)malloc(sizeof(OBJECT)*hres*vres); |
139 |
aprev = (uby8 *)malloc(sizeof(uby8)*hres*vres); |
140 |
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 |
error(SYSTEM, "out of memory in init_frame"); |
146 |
for (n = hres*vres; n--; ) { |
147 |
zprev[n] = -1.f; |
148 |
xmbuffer[n] = ymbuffer[n] = MO_UNK; |
149 |
oprev[n] = OVOID; |
150 |
} |
151 |
frm_stop = getTime() + rtperfrm; |
152 |
} else { |
153 |
COLOR *cp; /* else just swap buffers */ |
154 |
float *fp; |
155 |
OBJECT *op; |
156 |
uby8 *bp; |
157 |
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 |
memset(abuffer, '\0', sizeof(uby8)*hres*vres); |
162 |
memset(sbuffer, '\0', sizeof(uby8)*hres*vres); |
163 |
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 |
sample_here( /* 4x4 quincunx sample at this pixel? */ |
176 |
int x, |
177 |
int y |
178 |
) |
179 |
{ |
180 |
if (y & 0x1) /* every other row has samples */ |
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return(0); |
182 |
if (y & 0x3) /* every fourth row is offset */ |
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x += 2; |
184 |
return((x & 0x3) == 0); /* every fourth column is sampled */ |
185 |
} |
186 |
|
187 |
|
188 |
extern void |
189 |
sample_pos( /* compute jittered sample position */ |
190 |
double hv[2], |
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int x, |
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int y, |
193 |
int sn |
194 |
) |
195 |
{ |
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 |
extern double |
206 |
sample_wt( /* compute interpolant sample weight */ |
207 |
int xo, |
208 |
int yo |
209 |
) |
210 |
{ |
211 |
static double etab[400]; |
212 |
/* 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 |
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 |
i = (int)((10.*3./(double)SAMPDIST2)*rad_2 + .5); |
223 |
if (i >= 400) |
224 |
return(0.0); |
225 |
return(etab[i]); |
226 |
} |
227 |
|
228 |
|
229 |
static int |
230 |
offset_cmp( /* compare offset distances */ |
231 |
const void *p1, |
232 |
const void *p2 |
233 |
) |
234 |
{ |
235 |
return(*(const int *)p1 - *(const int *)p2); |
236 |
} |
237 |
|
238 |
|
239 |
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 |
{ |
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 |
int i, j; |
253 |
/* get our object number */ |
254 |
myobj = obuffer[fndx(x, y)]; |
255 |
/* special case for borders */ |
256 |
if ((x < SAMPDIST) | (x >= hres-SAMPDIST) | |
257 |
(y < SAMPDIST) | (y >= vres-SAMPDIST)) { |
258 |
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 |
if ((myobj != OVOID) & (obuffer[i0] != myobj)) |
270 |
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 |
if ((hres != hro) | (vres != vro)) { |
285 |
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 |
for (j = 0, nf = 0; (j < NSCHECK) & (nf < nc); j++) { |
304 |
i = i0 + ioffs[j]; |
305 |
if (sbuffer[i] && (myobj == OVOID) | (obuffer[i] == myobj)) |
306 |
iarr[nf++] = i; |
307 |
} |
308 |
/* return number found */ |
309 |
return(nf); |
310 |
#undef NSCHECK |
311 |
} |
312 |
|
313 |
|
314 |
static void |
315 |
setmotion( /* compute motion vector for this pixel */ |
316 |
int n, |
317 |
FVECT wpos |
318 |
) |
319 |
{ |
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 |
if ((xp < 0) | (xp >= hres)) |
341 |
return; |
342 |
if ((yp < 0) | (yp >= vres)) |
343 |
return; |
344 |
n = fndx(xp, yp); |
345 |
if ((zprev[n] < 0.97*ovp[2]) | (zprev[n] > 1.03*ovp[2])) |
346 |
oprev[n] = OVOID; /* assume it's a bad match */ |
347 |
} |
348 |
|
349 |
|
350 |
static void |
351 |
init_frame_sample(void) /* sample our initial frame */ |
352 |
{ |
353 |
RAY ir; |
354 |
int x, y; |
355 |
int n; |
356 |
|
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 |
rayorigin(&ir, PRIMARY, NULL, NULL); |
379 |
if (!localhit(&ir, &thescene)) { |
380 |
if (ir.ro != &Aftplane && sourcehit(&ir)) { |
381 |
rayshade(&ir, ir.ro->omod); |
382 |
rayparticipate(&ir); |
383 |
} |
384 |
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 |
rayorigin(&ir, PRIMARY, NULL, NULL); |
399 |
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 |
if (ir.rot >= 0.99*FHUGE) |
413 |
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 |
if ((obuffer[n+1] != OVOID) & (obuffer[n+1] != obj)) { |
441 |
obuffer[n] = OVOID; |
442 |
obuffer[n+1] = OVOID; |
443 |
} |
444 |
if ((obuffer[n+hres] != OVOID) & (obuffer[n+hres] != obj)) { |
445 |
obuffer[n] = OVOID; |
446 |
obuffer[n+hres] = OVOID; |
447 |
} |
448 |
} |
449 |
|
450 |
if (!silent) |
451 |
printf("done\n"); |
452 |
} |
453 |
|
454 |
|
455 |
extern int |
456 |
getambcolor( /* get ambient color for object if we can */ |
457 |
COLOR clr, |
458 |
int obj |
459 |
) |
460 |
{ |
461 |
OBJREC *op; |
462 |
|
463 |
if (obj == OVOID) |
464 |
return(0); |
465 |
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 |
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 |
if ((lv != NULL) ^ hirendparams.ambincl) |
485 |
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 |
extern double |
524 |
estimaterr( /* estimate relative error from samples */ |
525 |
COLOR cs, |
526 |
COLOR cs2, |
527 |
int ns, |
528 |
int ns0 |
529 |
) |
530 |
{ |
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 |
extern double |
550 |
comperr( /* estimate relative error in neighborhood */ |
551 |
int *neigh, |
552 |
int nc, |
553 |
int ns0 |
554 |
) |
555 |
{ |
556 |
COLOR csum, csum2; |
557 |
COLOR ctmp; |
558 |
int i; |
559 |
int ns; |
560 |
int n; |
561 |
/* add together samples */ |
562 |
setcolor(csum, 0., 0., 0.); |
563 |
setcolor(csum2, 0., 0., 0.); |
564 |
for (i = 0, ns = 0; (i < nc) & (ns < NSAMPOK); i++) { |
565 |
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 |
extern void |
586 |
comp_frame_error(void) /* initialize frame error values */ |
587 |
{ |
588 |
uby8 *edone = NULL; |
589 |
COLOR objamb; |
590 |
double eest; |
591 |
int neigh[NSAMPOK]; |
592 |
int nc; |
593 |
int x, y, i; |
594 |
int n; |
595 |
|
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 |
edone = (uby8 *)calloc(hres*vres, sizeof(uby8)); |
613 |
for (y = vres; y--; ) |
614 |
for (x = hres; x--; ) { |
615 |
n = fndx(x, y); |
616 |
if ((abuffer[n] != ALOWQ) | (obuffer[n] == OVOID)) |
617 |
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 |
extern void |
665 |
init_frame(void) /* render base (low quality) frame */ |
666 |
{ |
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 |
#if 0 |
706 |
{ |
707 |
float *ebuf = (float *)malloc(sizeof(float)*hres*vres); |
708 |
char fnm[256]; |
709 |
int n; |
710 |
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 |
#endif |
718 |
} |
719 |
|
720 |
|
721 |
extern void |
722 |
filter_frame(void) /* interpolation, motion-blur, and exposure */ |
723 |
{ |
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 |
int n; |
731 |
|
732 |
#if 0 |
733 |
/* 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 |
#endif |
744 |
|
745 |
if (!silent) { |
746 |
printf("\tFiltering frame\n"); |
747 |
fflush(stdout); |
748 |
} |
749 |
/* 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 |
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 |
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 |
w = 1.0/wsum; |
786 |
scalecolor(cbuffer[n], w); |
787 |
} |
788 |
/* motion blur if requested */ |
789 |
if (mblur > .02) { |
790 |
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 |
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 |
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 |
(yl >= 0) & (yl < vres)) { |
828 |
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 |
} else { |
841 |
cnt = run + 1; |
842 |
w = 1./cnt; |
843 |
copycolor(cval, cbuffer[n]); |
844 |
scalecolor(cval, w); |
845 |
while (cnt) |
846 |
if (run2 >= rise2) { |
847 |
if ((xl >= 0) & (xl < hres) & |
848 |
(yl >= 0) & (yl < vres)) { |
849 |
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 |
} |
861 |
} |
862 |
} |
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 |
copycolor(outbuffer[n], cbuffer[n]); |
875 |
/* |
876 |
for (n = hres*vres; n--; ) |
877 |
if (!sbuffer[n]) |
878 |
setcolor(outbuffer[n], 0., 0., 0.); |
879 |
*/ |
880 |
/* adjust exposure */ |
881 |
if ((expval < 0.99) | (expval > 1.01)) |
882 |
for (n = hres*vres; n--; ) |
883 |
scalecolor(outbuffer[n], expval); |
884 |
#if 0 |
885 |
{ |
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 |
#endif |
896 |
} |
897 |
|
898 |
|
899 |
extern void |
900 |
send_frame(void) /* send frame to destination */ |
901 |
{ |
902 |
char fname[1024]; |
903 |
double d; |
904 |
FILE *fp; |
905 |
int y; |
906 |
/* open output picture */ |
907 |
sprintf(fname, vval(BASENAME), fcur); |
908 |
strcat(fname, ".hdr"); |
909 |
fp = fopen(fname, "w"); |
910 |
if (fp == NULL) { |
911 |
sprintf(errmsg, "cannot open output frame \"%s\"", fname); |
912 |
error(SYSTEM, errmsg); |
913 |
} |
914 |
SET_FILE_BINARY(fp); |
915 |
if (!silent) { |
916 |
printf("\tWriting to \"%s\"\n", fname); |
917 |
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 |
if ((d < 0.99) | (d > 1.01)) |
928 |
fputexpos(d, fp); |
929 |
d = viewaspect(&vw) * hres / vres; |
930 |
if ((d < 0.99) | (d > 1.01)) |
931 |
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 |
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 |
return; /* all is well */ |
999 |
writerr: |
1000 |
sprintf(errmsg, "error writing file \"%s\"", fname); |
1001 |
error(SYSTEM, errmsg); |
1002 |
} |
1003 |
|
1004 |
|
1005 |
extern void |
1006 |
free_frame(void) /* free frame allocation */ |
1007 |
{ |
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 |
} |