1 |
#ifndef lint |
2 |
static const char RCSid[] = "$Id: ranimove1.c,v 3.20 2012/10/02 21:56:20 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 |
COLOR *outbuffer; /* output buffer (may equal cbuffer) */ |
36 |
|
37 |
VIEW vwprev; /* last frame's view */ |
38 |
COLOR *cprev; /* last frame colors */ |
39 |
float *zprev; /* last frame depth */ |
40 |
OBJECT *oprev; /* last frame objects */ |
41 |
uby8 *aprev; /* last frame accuracy */ |
42 |
|
43 |
float *cerrmap; /* conspicuous error map */ |
44 |
COLOR *val2map; /* value-squared map for variance */ |
45 |
|
46 |
double frm_stop; /* when to stop rendering this frame */ |
47 |
|
48 |
double hlsmax; /* maximum high-level saliency this frame */ |
49 |
|
50 |
|
51 |
static void next_frame(void); |
52 |
static int sample_here(int x, int y); |
53 |
static int offset_cmp(const void *p1, const void *p2); |
54 |
static void setmotion(int n, FVECT wpos); |
55 |
static void init_frame_sample(void); |
56 |
|
57 |
|
58 |
#if 0 |
59 |
void |
60 |
write_map( /* write out float map (debugging) */ |
61 |
float *mp, |
62 |
char *fn |
63 |
) |
64 |
{ |
65 |
FILE *fp = fopen(fn, "w"); |
66 |
COLOR scanbuf[2048]; |
67 |
int x, y; |
68 |
|
69 |
if (fp == NULL) |
70 |
return; |
71 |
newheader("RADIANCE", fp); |
72 |
fputformat(COLRFMT, fp); |
73 |
fputc('\n', fp); /* end header */ |
74 |
fprtresolu(hres, vres, fp); |
75 |
for (y = vres; y--; ) { /* write scanlines */ |
76 |
float *bp = mp + (y+1)*hres - 1; |
77 |
for (x = hres; x--; bp--) |
78 |
setcolor(scanbuf[x], *bp, *bp, *bp); |
79 |
if (fwritescan(scanbuf, hres, fp) < 0) |
80 |
break; |
81 |
} |
82 |
fclose(fp); |
83 |
} |
84 |
#endif |
85 |
|
86 |
|
87 |
static void |
88 |
next_frame(void) /* prepare next frame buffer */ |
89 |
{ |
90 |
VIEW *fv; |
91 |
char *err; |
92 |
/* get previous view */ |
93 |
if (vw.type != 0) |
94 |
vwprev = vw; |
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else if (fcur > 1 && (fv = getview(fcur-1)) != NULL) { |
96 |
vwprev = *fv; |
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if (setview(&vwprev) != NULL) |
98 |
vwprev.type = 0; |
99 |
} |
100 |
/* get current view */ |
101 |
if ((fv = getview(fcur)) == NULL) { |
102 |
sprintf(errmsg, "cannot get view for frame %d", fcur); |
103 |
error(USER, errmsg); |
104 |
} |
105 |
vw = *fv; |
106 |
if ((err = setview(&vw)) != NULL) { |
107 |
sprintf(errmsg, "view error at frame %d: %s", fcur, err); |
108 |
error(USER, errmsg); |
109 |
} |
110 |
if (cbuffer == NULL) { |
111 |
int n; /* compute resolution and allocate */ |
112 |
switch (sscanf(vval(RESOLUTION), "%d %d %lf", |
113 |
&hres, &vres, &pixaspect)) { |
114 |
case 1: |
115 |
vres = hres; |
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/* fall through */ |
117 |
case 2: |
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pixaspect = 1.; |
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/* fall through */ |
120 |
case 3: |
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if ((hres > 0) & (vres > 0)) |
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break; |
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/* fall through */ |
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default: |
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sprintf(errmsg, "bad %s value", vnam(RESOLUTION)); |
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error(USER, errmsg); |
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} |
128 |
normaspect(viewaspect(&vw), &pixaspect, &hres, &vres); |
129 |
cbuffer = (COLOR *)malloc(sizeof(COLOR)*hres*vres); |
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zbuffer = (float *)malloc(sizeof(float)*hres*vres); |
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obuffer = (OBJECT *)malloc(sizeof(OBJECT)*hres*vres); |
132 |
xmbuffer = (short *)malloc(sizeof(short)*hres*vres); |
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ymbuffer = (short *)malloc(sizeof(short)*hres*vres); |
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abuffer = (uby8 *)calloc(hres*vres, sizeof(uby8)); |
135 |
sbuffer = (uby8 *)calloc(hres*vres, sizeof(uby8)); |
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cprev = (COLOR *)malloc(sizeof(COLOR)*hres*vres); |
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zprev = (float *)malloc(sizeof(float)*hres*vres); |
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oprev = (OBJECT *)malloc(sizeof(OBJECT)*hres*vres); |
139 |
aprev = (uby8 *)malloc(sizeof(uby8)*hres*vres); |
140 |
if (mblur > .02) |
141 |
outbuffer = (COLOR *)malloc(sizeof(COLOR)*hres*vres); |
142 |
else |
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outbuffer = cbuffer; |
144 |
if ((cbuffer==NULL) | (zbuffer==NULL) | (obuffer==NULL) | |
145 |
(xmbuffer==NULL) | (ymbuffer==NULL) | |
146 |
(abuffer==NULL) | (sbuffer==NULL) | |
147 |
(cprev==NULL) | (zprev == NULL) | |
148 |
(oprev==NULL) | (aprev==NULL) | |
149 |
(outbuffer==NULL)) |
150 |
error(SYSTEM, "out of memory in init_frame"); |
151 |
for (n = hres*vres; n--; ) { |
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zprev[n] = -1.f; |
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oprev[n] = OVOID; |
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} |
155 |
frm_stop = getTime() + rtperfrm; |
156 |
} else { /* else just swap buffers */ |
157 |
float *fp; |
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OBJECT *op; |
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uby8 *bp; |
160 |
if (outbuffer != cbuffer) { |
161 |
COLOR *cp = cprev; |
162 |
cprev = cbuffer; cbuffer = cp; |
163 |
} else { |
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outbuffer = cprev; cprev = cbuffer; |
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cbuffer = outbuffer; |
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} |
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fp = zprev; zprev = zbuffer; zbuffer = fp; |
168 |
op = oprev; oprev = obuffer; obuffer = op; |
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bp = aprev; aprev = abuffer; abuffer = bp; |
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memset(abuffer, 0, sizeof(uby8)*hres*vres); |
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memset(sbuffer, 0, sizeof(uby8)*hres*vres); |
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frm_stop += rtperfrm; |
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} |
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cerrmap = NULL; |
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val2map = NULL; |
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} |
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|
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|
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#define SAMPDIST 3 /* Maximum distance to neighbor sample */ |
180 |
#define SAMPDIST2 (SAMPDIST*SAMPDIST) |
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|
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|
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static int |
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sample_here( /* 4x4 quincunx sample at this pixel? */ |
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int x, |
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int y |
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) |
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{ |
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if (y & 0x1) /* every other row has samples */ |
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return(0); |
191 |
if (y & 0x3) /* every fourth row is offset */ |
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x += 2; |
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return((x & 0x3) == 0); /* every fourth column is sampled */ |
194 |
} |
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|
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|
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void |
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sample_pos( /* compute jittered sample position */ |
199 |
double hv[2], |
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int x, |
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int y, |
202 |
int sn |
203 |
) |
204 |
{ |
205 |
int hl[2]; |
206 |
|
207 |
hl[0] = x; hl[1] = y; |
208 |
multisamp(hv, 2, urand(ilhash(hl,2) + sn)); |
209 |
hv[0] = ((double)x + hv[0]) / (double)hres; |
210 |
hv[1] = ((double)y + hv[1]) / (double)vres; |
211 |
} |
212 |
|
213 |
|
214 |
double |
215 |
sample_wt( /* compute interpolant sample weight */ |
216 |
int xo, |
217 |
int yo |
218 |
) |
219 |
{ |
220 |
static double etab[400]; |
221 |
/* we can't use the name rad2 here, for some reason Visual C |
222 |
thinks that is a constant (compiler bug?) */ |
223 |
int rad_2 = xo*xo + yo*yo; |
224 |
int i; |
225 |
|
226 |
if (etab[0] <= FTINY) /* initialize exponent table */ |
227 |
for (i = 400; i--; ) |
228 |
etab[i] = exp(-0.1*i); |
229 |
|
230 |
/* look up Gaussian */ |
231 |
i = (int)((10.*3./(double)SAMPDIST2)*rad_2 + .5); |
232 |
if (i >= 400) |
233 |
return(0.0); |
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return(etab[i]); |
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} |
236 |
|
237 |
|
238 |
static int |
239 |
offset_cmp( /* compare offset distances */ |
240 |
const void *p1, |
241 |
const void *p2 |
242 |
) |
243 |
{ |
244 |
return(*(const int *)p1 - *(const int *)p2); |
245 |
} |
246 |
|
247 |
|
248 |
int |
249 |
getclosest( /* get nc closest neighbors on same object */ |
250 |
int *iarr, |
251 |
int nc, |
252 |
int x, |
253 |
int y |
254 |
) |
255 |
{ |
256 |
#define NSCHECK ((2*SAMPDIST+1)*(2*SAMPDIST+1)) |
257 |
static int hro, vro; |
258 |
static int ioffs[NSCHECK]; |
259 |
OBJECT myobj; |
260 |
int i0, nf; |
261 |
int i, j; |
262 |
/* get our object number */ |
263 |
myobj = obuffer[fndx(x, y)]; |
264 |
/* special case for borders */ |
265 |
if ((x < SAMPDIST) | (x >= hres-SAMPDIST) | |
266 |
(y < SAMPDIST) | (y >= vres-SAMPDIST)) { |
267 |
int tndx[NSCHECK][2]; |
268 |
nf = 0; |
269 |
for (j = y - SAMPDIST; j <= y + SAMPDIST; j++) { |
270 |
if (j >= vres) break; |
271 |
if (j < 0) j = 0; |
272 |
for (i = x - SAMPDIST; i <= x + SAMPDIST; i++) { |
273 |
if (i >= hres) break; |
274 |
if (i < 0) i = 0; |
275 |
i0 = fndx(i, j); |
276 |
if (!sbuffer[i0]) |
277 |
continue; |
278 |
if ((myobj != OVOID) & (obuffer[i0] != myobj)) |
279 |
continue; |
280 |
tndx[nf][0] = (i-x)*(i-x) + (j-y)*(j-y); |
281 |
tndx[nf][1] = i0; |
282 |
nf++; |
283 |
} |
284 |
} |
285 |
qsort((void *)tndx, nf, 2*sizeof(int), offset_cmp); |
286 |
if (nf > nc) |
287 |
nf = nc; |
288 |
for (i = nf; i--; ) |
289 |
iarr[i] = tndx[i][1]; |
290 |
return(nf); |
291 |
} |
292 |
/* initialize offset array */ |
293 |
if ((hres != hro) | (vres != vro)) { |
294 |
int toffs[NSCHECK][2]; |
295 |
i0 = fndx(SAMPDIST, SAMPDIST); |
296 |
nf = 0; |
297 |
for (i = 0; i <= 2*SAMPDIST; i++) |
298 |
for (j = 0; j <= 2*SAMPDIST; j++) { |
299 |
toffs[nf][0] = (i-SAMPDIST)*(i-SAMPDIST) + |
300 |
(j-SAMPDIST)*(j-SAMPDIST); |
301 |
toffs[nf][1] = fndx(i, j) - i0; |
302 |
nf++; |
303 |
} |
304 |
qsort((void *)toffs, nf, 2*sizeof(int), offset_cmp); |
305 |
for (i = NSCHECK; i--; ) |
306 |
ioffs[i] = toffs[i][1]; |
307 |
hro = hres; |
308 |
vro = vres; |
309 |
} |
310 |
/* find up to nc neighbors */ |
311 |
i0 = fndx(x, y); |
312 |
for (j = 0, nf = 0; (j < NSCHECK) & (nf < nc); j++) { |
313 |
i = i0 + ioffs[j]; |
314 |
if (sbuffer[i] && (myobj == OVOID) | (obuffer[i] == myobj)) |
315 |
iarr[nf++] = i; |
316 |
} |
317 |
/* return number found */ |
318 |
return(nf); |
319 |
#undef NSCHECK |
320 |
} |
321 |
|
322 |
|
323 |
static void |
324 |
setmotion( /* compute motion vector for this pixel */ |
325 |
int n, |
326 |
FVECT wpos |
327 |
) |
328 |
{ |
329 |
FVECT ovp; |
330 |
int moi; |
331 |
int xp, yp; |
332 |
/* ID object and update maximum HLS */ |
333 |
moi = getmove(obuffer[n]); |
334 |
if (moi >= 0 && obj_move[moi].cprio > hlsmax) |
335 |
hlsmax = obj_move[moi].cprio; |
336 |
if (vwprev.type == 0) /* return leaves MO_UNK */ |
337 |
return; |
338 |
if (moi >= 0) { /* move object point back */ |
339 |
multp3(ovp, wpos, obj_move[moi].bxfm); |
340 |
wpos = ovp; |
341 |
} |
342 |
viewloc(ovp, &vwprev, wpos); |
343 |
if (ovp[2] <= FTINY) |
344 |
return; |
345 |
xp = (int)(ovp[0]*hres); |
346 |
yp = (int)(ovp[1]*vres); |
347 |
xmbuffer[n] = xp - (n % hres); |
348 |
ymbuffer[n] = yp - (n / hres); |
349 |
if ((xp < 0) | (xp >= hres)) |
350 |
return; |
351 |
if ((yp < 0) | (yp >= vres)) |
352 |
return; |
353 |
n = fndx(xp, yp); |
354 |
if ((zprev[n] < 0.97*ovp[2]) | (zprev[n] > 1.03*ovp[2])) |
355 |
oprev[n] = OVOID; /* assume it's a bad match */ |
356 |
} |
357 |
|
358 |
|
359 |
static void |
360 |
init_frame_sample(void) /* sample our initial frame */ |
361 |
{ |
362 |
RAY ir; |
363 |
int x, y; |
364 |
int n; |
365 |
|
366 |
if (!silent) { |
367 |
printf("\tComputing initial samples..."); |
368 |
fflush(stdout); |
369 |
} |
370 |
hlsmax = CSF_SMN; |
371 |
for (y = vres; y--; ) |
372 |
for (x = hres; x--; ) { |
373 |
double hv[2]; |
374 |
n = fndx(x, y); |
375 |
xmbuffer[n] = ymbuffer[n] = MO_UNK; |
376 |
sample_pos(hv, x, y, 0); |
377 |
ir.rmax = viewray(ir.rorg, ir.rdir, &vw, hv[0], hv[1]); |
378 |
if (ir.rmax < -FTINY) { |
379 |
setcolor(cbuffer[n], 0., 0., 0.); |
380 |
zbuffer[n] = FHUGE; |
381 |
obuffer[n] = OVOID; |
382 |
abuffer[n] = ADISTANT; |
383 |
continue; |
384 |
} |
385 |
if (!sample_here(x, y)) { /* just cast */ |
386 |
rayorigin(&ir, PRIMARY, NULL, NULL); |
387 |
if (!localhit(&ir, &thescene)) { |
388 |
if (ir.ro != &Aftplane && sourcehit(&ir)) { |
389 |
rayshade(&ir, ir.ro->omod); |
390 |
rayparticipate(&ir); |
391 |
} |
392 |
copycolor(cbuffer[n], ir.rcol); |
393 |
zbuffer[n] = ir.rot; |
394 |
obuffer[n] = ir.robj; |
395 |
abuffer[n] = ADISTANT; |
396 |
sbuffer[n] = 1; |
397 |
} else { |
398 |
zbuffer[n] = ir.rot; |
399 |
obuffer[n] = ir.robj; |
400 |
setmotion(n, ir.rop); |
401 |
} |
402 |
continue; |
403 |
} |
404 |
if (nprocs > 1) { /* get sample */ |
405 |
int rval; |
406 |
rayorigin(&ir, PRIMARY, NULL, NULL); |
407 |
ir.rno = n; |
408 |
rval = ray_pqueue(&ir); |
409 |
if (!rval) |
410 |
continue; |
411 |
if (rval < 0) |
412 |
quit(1); |
413 |
n = ir.rno; |
414 |
} else |
415 |
ray_trace(&ir); |
416 |
copycolor(cbuffer[n], ir.rcol); |
417 |
zbuffer[n] = ir.rot; |
418 |
obuffer[n] = ir.robj; |
419 |
sbuffer[n] = 1; |
420 |
if (ir.rot >= 0.99*FHUGE) |
421 |
abuffer[n] = ADISTANT; |
422 |
else { |
423 |
abuffer[n] = ALOWQ; |
424 |
setmotion(n, ir.rop); |
425 |
} |
426 |
} |
427 |
if (nprocs > 1) /* get stragglers */ |
428 |
while (ray_presult(&ir, 0)) { |
429 |
n = ir.rno; |
430 |
copycolor(cbuffer[n], ir.rcol); |
431 |
zbuffer[n] = ir.rot; |
432 |
obuffer[n] = ir.robj; |
433 |
sbuffer[n] = 1; |
434 |
if (ir.rot >= FHUGE) |
435 |
abuffer[n] = ADISTANT; |
436 |
else { |
437 |
abuffer[n] = ALOWQ; |
438 |
setmotion(n, ir.rop); |
439 |
} |
440 |
} |
441 |
/* ambiguate object boundaries */ |
442 |
for (y = vres-1; y--; ) |
443 |
for (x = hres-1; x--; ) { |
444 |
OBJECT obj; |
445 |
n = fndx(x, y); |
446 |
if ((obj = obuffer[n]) == OVOID) |
447 |
continue; |
448 |
if ((obuffer[n+1] != OVOID) & (obuffer[n+1] != obj)) { |
449 |
obuffer[n] = OVOID; |
450 |
obuffer[n+1] = OVOID; |
451 |
} |
452 |
if ((obuffer[n+hres] != OVOID) & (obuffer[n+hres] != obj)) { |
453 |
obuffer[n] = OVOID; |
454 |
obuffer[n+hres] = OVOID; |
455 |
} |
456 |
} |
457 |
|
458 |
if (!silent) |
459 |
printf("done\n"); |
460 |
} |
461 |
|
462 |
|
463 |
int |
464 |
getambcolor( /* get ambient color for object if we can */ |
465 |
COLOR clr, |
466 |
int obj |
467 |
) |
468 |
{ |
469 |
OBJREC *op; |
470 |
|
471 |
if (obj == OVOID) |
472 |
return(0); |
473 |
op = objptr(obj); /* search for material */ |
474 |
if (op->omod == OVOID) |
475 |
return(0); |
476 |
op = findmaterial(objptr(op->omod)); |
477 |
if (op == NULL) |
478 |
return(0); |
479 |
/* |
480 |
* Since this routine is called to compute the difference |
481 |
* from rendering with and without interreflections, |
482 |
* we don't want to return colors for materials that are |
483 |
* explicitly excluded from the HQ ambient calculation. |
484 |
*/ |
485 |
if (hirendparams.ambincl >= 0) { |
486 |
int i; |
487 |
char *lv; |
488 |
for (i = 0; (lv = rpambmod(&hirendparams,i)) != NULL; i++) |
489 |
if (lv[0] == op->oname[0] && |
490 |
!strcmp(lv+1, op->oname+1)) |
491 |
break; |
492 |
if ((lv != NULL) ^ hirendparams.ambincl) |
493 |
return(0); |
494 |
} |
495 |
switch (op->otype) { |
496 |
case MAT_PLASTIC: |
497 |
case MAT_METAL: |
498 |
case MAT_PLASTIC2: |
499 |
case MAT_METAL2: |
500 |
case MAT_PFUNC: |
501 |
case MAT_MFUNC: |
502 |
case MAT_PDATA: |
503 |
case MAT_MDATA: |
504 |
case MAT_TRANS: |
505 |
case MAT_TRANS2: |
506 |
case MAT_TFUNC: |
507 |
case MAT_TDATA: |
508 |
if (op->oargs.nfargs < 3) |
509 |
return(0); |
510 |
setcolor(clr, op->oargs.farg[0], op->oargs.farg[1], |
511 |
op->oargs.farg[2]); |
512 |
return(1); |
513 |
case MAT_BRTDF: |
514 |
if (op->oargs.nfargs < 6) |
515 |
return(0); |
516 |
setcolor(clr, op->oargs.farg[0]+op->oargs.farg[3], |
517 |
op->oargs.farg[1]+op->oargs.farg[4], |
518 |
op->oargs.farg[2]+op->oargs.farg[5]); |
519 |
scalecolor(clr, 0.5); |
520 |
return(1); |
521 |
case MAT_LIGHT: |
522 |
case MAT_GLOW: |
523 |
case MAT_ILLUM: |
524 |
setcolor(clr, 0., 0., 0.); |
525 |
return(1); |
526 |
} |
527 |
return(0); |
528 |
} |
529 |
|
530 |
|
531 |
double |
532 |
estimaterr( /* estimate relative error from samples */ |
533 |
COLOR cs, |
534 |
COLOR cs2, |
535 |
int ns, |
536 |
int ns0 |
537 |
) |
538 |
{ |
539 |
double d, d2, brt; |
540 |
|
541 |
if (ns <= 1 || (brt = bright(cs)/ns) < 1e-14) |
542 |
return(1.0); |
543 |
/* use largest of RGB std. dev. */ |
544 |
d2 = colval(cs2,RED) - colval(cs,RED)*colval(cs,RED)/ns; |
545 |
d = colval(cs2,GRN) - colval(cs,GRN)*colval(cs,GRN)/ns; |
546 |
if (d > d2) d2 = d; |
547 |
d = colval(cs2,BLU) - colval(cs,BLU)*colval(cs,BLU)/ns; |
548 |
if (d > d2) d2 = d; |
549 |
/* use s.d. if <= 1 central sample */ |
550 |
if (ns0 <= 1) |
551 |
return(sqrt(d2/(ns-1))/brt); |
552 |
/* use s.d./sqrt(ns0) otherwise */ |
553 |
return(sqrt(d2/((ns-1)*ns0))/brt); |
554 |
} |
555 |
|
556 |
|
557 |
double |
558 |
comperr( /* estimate relative error in neighborhood */ |
559 |
int *neigh, |
560 |
int nc, |
561 |
int ns0 |
562 |
) |
563 |
{ |
564 |
COLOR csum, csum2; |
565 |
COLOR ctmp; |
566 |
int i; |
567 |
int ns; |
568 |
int n; |
569 |
/* add together samples */ |
570 |
setcolor(csum, 0., 0., 0.); |
571 |
setcolor(csum2, 0., 0., 0.); |
572 |
for (i = 0, ns = 0; (i < nc) & (ns < NSAMPOK); i++) { |
573 |
n = neigh[i]; |
574 |
addcolor(csum, cbuffer[n]); |
575 |
if (val2map != NULL) { |
576 |
addcolor(csum2, val2map[n]); |
577 |
ns += sbuffer[n]; |
578 |
continue; |
579 |
} |
580 |
if (sbuffer[n] != 1) |
581 |
error(CONSISTENCY, "bad count in comperr"); |
582 |
copycolor(ctmp, cbuffer[n]); |
583 |
multcolor(ctmp, ctmp); |
584 |
addcolor(csum2, ctmp); |
585 |
ns++; |
586 |
} |
587 |
return(estimaterr(csum, csum2, ns, ns0)); |
588 |
} |
589 |
|
590 |
|
591 |
void |
592 |
comp_frame_error(void) /* initialize frame error values */ |
593 |
{ |
594 |
uby8 *edone = NULL; |
595 |
COLOR objamb; |
596 |
double eest; |
597 |
int neigh[NSAMPOK]; |
598 |
int nc; |
599 |
int x, y, i; |
600 |
int n; |
601 |
|
602 |
if (!silent) { |
603 |
printf("\tComputing error map\n"); |
604 |
fflush(stdout); |
605 |
} |
606 |
if (acctab[0] <= FTINY) /* initialize accuracy table */ |
607 |
for (i = 256; i--; ) |
608 |
acctab[i] = errorf(i); |
609 |
/* estimate sample error */ |
610 |
if (!curparams->ambounce && hirendparams.ambounce) { |
611 |
/* |
612 |
* Our error estimate for the initial value is based |
613 |
* on the assumption that most of it comes from the |
614 |
* lack of an interreflection calculation. The relative |
615 |
* error should be less than the ambient value divided |
616 |
* by the returned ray value -- we take half of this. |
617 |
*/ |
618 |
edone = (uby8 *)calloc(hres*vres, sizeof(uby8)); |
619 |
for (n = hres*vres; n--; ) { |
620 |
if ((abuffer[n] != ALOWQ) | (obuffer[n] == OVOID)) |
621 |
continue; |
622 |
if (!getambcolor(objamb, obuffer[n])) |
623 |
continue; |
624 |
multcolor(objamb, ambval); |
625 |
if ((eest = bright(cbuffer[n])) <= FTINY) |
626 |
continue; |
627 |
eest = bright(objamb) / eest; |
628 |
if (eest > 1.) /* should we report this? */ |
629 |
continue; |
630 |
eest *= 0.50; /* use 50% ambient error */ |
631 |
i = errori(eest); |
632 |
if (i < AMIN) i = AMIN; |
633 |
else if (i >= ADISTANT/2) i = ADISTANT/2-1; |
634 |
abuffer[n] = i; |
635 |
edone[n] = 1; |
636 |
} |
637 |
} |
638 |
/* final statistical estimate */ |
639 |
for (y = vres; y--; ) |
640 |
for (x = hres; x--; ) { |
641 |
n = fndx(x, y); |
642 |
if (abuffer[n] == ADISTANT) |
643 |
continue; /* don't update these */ |
644 |
if (edone != NULL && edone[n]) |
645 |
continue; /* already done this */ |
646 |
if (sbuffer[n] >= 255) { |
647 |
abuffer[n] = ADISTANT; |
648 |
continue; /* can't take any more */ |
649 |
} |
650 |
nc = getclosest(neigh, NSAMPOK, x, y); |
651 |
if (nc <= 0) { |
652 |
abuffer[n] = ANOVAL; |
653 |
continue; /* no clue what to do for him */ |
654 |
} |
655 |
i = errori(comperr(neigh, nc, sbuffer[n])); |
656 |
if (i < AMIN) i = AMIN; |
657 |
else if (i >= ADISTANT) i = ADISTANT-1; |
658 |
abuffer[n] = i; |
659 |
/* can't be better than closest */ |
660 |
if (i < abuffer[neigh[0]] && abuffer[neigh[0]] >= AMIN) |
661 |
abuffer[n] = abuffer[neigh[0]]; |
662 |
} |
663 |
if (edone != NULL) |
664 |
free((void *)edone); |
665 |
} |
666 |
|
667 |
|
668 |
void |
669 |
init_frame(void) /* render base (low quality) frame */ |
670 |
{ |
671 |
int restart; |
672 |
/* allocate/swap buffers */ |
673 |
next_frame(); |
674 |
/* check rendering status */ |
675 |
restart = (!nobjects || vdef(MOVE)); |
676 |
if (!restart && curparams != &lorendparams && nprocs > 1) |
677 |
restart = -1; |
678 |
/* post low quality parameters */ |
679 |
if (curparams != &lorendparams) |
680 |
ray_restore(curparams = &lorendparams); |
681 |
if (restart > 0) { /* load new octree */ |
682 |
char *oct = getoctspec(fcur); |
683 |
if (oct == NULL) { |
684 |
sprintf(errmsg, "cannot get scene for frame %d", fcur); |
685 |
error(USER, errmsg); |
686 |
} |
687 |
if (!silent) { |
688 |
printf("\tLoading octree..."); |
689 |
fflush(stdout); |
690 |
} |
691 |
if (nprocs > 1) |
692 |
ray_pinit(oct, nprocs); |
693 |
else |
694 |
ray_init(oct); |
695 |
} else if (restart < 0) { /* update children */ |
696 |
if (!silent) { |
697 |
printf("\tRestarting %d processes...", nprocs); |
698 |
fflush(stdout); |
699 |
} |
700 |
ray_pclose(0); |
701 |
ray_popen(nprocs); |
702 |
} |
703 |
if (restart && !silent) |
704 |
printf("done\n"); |
705 |
/* sample frame buffer */ |
706 |
init_frame_sample(); |
707 |
/* initialize frame error */ |
708 |
comp_frame_error(); |
709 |
#if 0 |
710 |
{ |
711 |
float *ebuf = (float *)malloc(sizeof(float)*hres*vres); |
712 |
char fnm[256]; |
713 |
int n; |
714 |
for (n = hres*vres; n--; ) |
715 |
ebuf[n] = acctab[abuffer[n]]; |
716 |
sprintf(fnm, vval(BASENAME), fcur); |
717 |
strcat(fnm, "_inerr.pic"); |
718 |
write_map(ebuf, fnm); |
719 |
free((void *)ebuf); |
720 |
} |
721 |
#endif |
722 |
} |
723 |
|
724 |
|
725 |
void |
726 |
filter_frame(void) /* interpolation, motion-blur, and exposure */ |
727 |
{ |
728 |
const double expval = expspec_val(getexp(fcur)); |
729 |
int x, y; |
730 |
int neigh[NPINTERP]; |
731 |
int nc; |
732 |
COLOR cval; |
733 |
double w, wsum; |
734 |
int n; |
735 |
|
736 |
#if 0 |
737 |
/* XXX TEMPORARY!! */ |
738 |
conspicuity(); |
739 |
write_map(cerrmap, "outcmap.pic"); |
740 |
{ |
741 |
float *ebuf = (float *)malloc(sizeof(float)*hres*vres); |
742 |
for (n = hres*vres; n--; ) |
743 |
ebuf[n] = acctab[abuffer[n]]; |
744 |
write_map(ebuf, "outerr.pic"); |
745 |
free((void *)ebuf); |
746 |
} |
747 |
#endif |
748 |
if (!silent) { |
749 |
printf("\tFiltering frame\n"); |
750 |
fflush(stdout); |
751 |
} |
752 |
/* normalize samples */ |
753 |
for (n = hres*vres; n--; ) { |
754 |
if (sbuffer[n] <= 1) |
755 |
continue; |
756 |
w = 1.0/(double)sbuffer[n]; |
757 |
scalecolor(cbuffer[n], w); |
758 |
} |
759 |
/* interpolate samples */ |
760 |
for (y = vres; y--; ) |
761 |
for (x = hres; x--; ) { |
762 |
n = fndx(x, y); |
763 |
if (sbuffer[n]) |
764 |
continue; |
765 |
nc = getclosest(neigh, NPINTERP, x, y); |
766 |
setcolor(cbuffer[n], 0., 0., 0.); |
767 |
if (nc <= 0) { /* no acceptable neighbors */ |
768 |
if (y < vres-1) |
769 |
nc = fndx(x, y+1); |
770 |
else if (x < hres-1) |
771 |
nc = fndx(x+1, y); |
772 |
else |
773 |
continue; |
774 |
copycolor(cbuffer[n], cbuffer[nc]); |
775 |
continue; |
776 |
} |
777 |
wsum = 0.; |
778 |
while (nc-- > 0) { |
779 |
copycolor(cval, cbuffer[neigh[nc]]); |
780 |
w = sample_wt((neigh[nc]%hres) - x, |
781 |
(neigh[nc]/hres) - y); |
782 |
scalecolor(cval, w); |
783 |
addcolor(cbuffer[n], cval); |
784 |
wsum += w; |
785 |
} |
786 |
w = 1.0/wsum; |
787 |
scalecolor(cbuffer[n], w); |
788 |
} |
789 |
/* motion blur if requested */ |
790 |
if (outbuffer != cbuffer) { |
791 |
int xs, ys, xl, yl; |
792 |
int rise, run; |
793 |
long rise2, run2; |
794 |
int n2; |
795 |
int cnt; |
796 |
fprintf(stderr, "outbuffer=0x%lx, cbuffer=0x%lx, cprev=0x%lx\n", |
797 |
(size_t)outbuffer, (size_t)cbuffer, (size_t)cprev); |
798 |
/* sum in motion streaks */ |
799 |
memset(outbuffer, 0, sizeof(COLOR)*hres*vres); |
800 |
memset(wbuffer, 0, sizeof(float)*hres*vres); |
801 |
for (y = vres; y--; ) |
802 |
for (x = hres; x--; ) { |
803 |
n = fndx(x, y); |
804 |
if (xmbuffer[n] == MO_UNK) { |
805 |
run = rise = 0; |
806 |
} else { |
807 |
run = (int)(mblur*xmbuffer[n]); |
808 |
rise = (int)(mblur*ymbuffer[n]); |
809 |
} |
810 |
if (!(run | rise)) { |
811 |
addcolor(outbuffer[n], cbuffer[n]); |
812 |
wbuffer[n] += 1.; |
813 |
continue; |
814 |
} |
815 |
xl = x; yl = y; |
816 |
if (run < 0) { xs = -1; run = -run; } |
817 |
else xs = 1; |
818 |
if (rise < 0) { ys = -1; rise = -rise; } |
819 |
else ys = 1; |
820 |
rise2 = run2 = 0L; |
821 |
if (rise > run) { |
822 |
cnt = rise + 1; |
823 |
w = 1./cnt; |
824 |
copycolor(cval, cbuffer[n]); |
825 |
scalecolor(cval, w); |
826 |
while (cnt) |
827 |
if (rise2 >= run2) { |
828 |
if ((xl >= 0) & (xl < hres) & |
829 |
(yl >= 0) & (yl < vres)) { |
830 |
n2 = fndx(xl, yl); |
831 |
addcolor(outbuffer[n2], |
832 |
cval); |
833 |
wbuffer[n2] += w; |
834 |
} |
835 |
yl += ys; |
836 |
run2 += run; |
837 |
cnt--; |
838 |
} else { |
839 |
xl += xs; |
840 |
rise2 += rise; |
841 |
} |
842 |
} else { |
843 |
cnt = run + 1; |
844 |
w = 1./cnt; |
845 |
copycolor(cval, cbuffer[n]); |
846 |
scalecolor(cval, w); |
847 |
while (cnt) |
848 |
if (run2 >= rise2) { |
849 |
if ((xl >= 0) & (xl < hres) & |
850 |
(yl >= 0) & (yl < vres)) { |
851 |
n2 = fndx(xl, yl); |
852 |
addcolor(outbuffer[n2], |
853 |
cval); |
854 |
wbuffer[n2] += w; |
855 |
} |
856 |
xl += xs; |
857 |
rise2 += rise; |
858 |
cnt--; |
859 |
} else { |
860 |
yl += ys; |
861 |
run2 += run; |
862 |
} |
863 |
} |
864 |
} |
865 |
/* compute final results */ |
866 |
for (n = hres*vres; n--; ) |
867 |
if (wbuffer[n] > 1.02) { |
868 |
w = 1./wbuffer[n]; |
869 |
scalecolor(outbuffer[n], w); |
870 |
} else if (wbuffer[n] < 0.98) { |
871 |
w = 1.-wbuffer[n]; |
872 |
copycolor(cval, cprev[n]); |
873 |
scalecolor(cval, w); |
874 |
addcolor(outbuffer[n], cval); |
875 |
} |
876 |
} |
877 |
/* adjust exposure */ |
878 |
for (n = ((expval < 0.98) | (expval > 1.02))*hres*vres; n--; ) |
879 |
scalecolor(outbuffer[n], expval); |
880 |
/* |
881 |
for (n = hres*vres; n--; ) |
882 |
if (!sbuffer[n]) |
883 |
setcolor(outbuffer[n], 0., 0., 0.); |
884 |
*/ |
885 |
#if 0 |
886 |
{ |
887 |
float *sbuf = (float *)malloc(sizeof(float)*hres*vres); |
888 |
char fnm[256]; |
889 |
sprintf(fnm, vval(BASENAME), fcur); |
890 |
strcat(fnm, "_outsamp.pic"); |
891 |
for (n = hres*vres; n--; ) |
892 |
sbuf[n] = (float)sbuffer[n]; |
893 |
write_map(sbuf, fnm); |
894 |
free((void *)sbuf); |
895 |
} |
896 |
#endif |
897 |
} |
898 |
|
899 |
|
900 |
void |
901 |
send_frame(void) /* send frame to destination */ |
902 |
{ |
903 |
char fname[1024]; |
904 |
double d; |
905 |
FILE *fp; |
906 |
int y; |
907 |
/* open output picture */ |
908 |
sprintf(fname, vval(BASENAME), fcur); |
909 |
strcat(fname, ".hdr"); |
910 |
fp = fopen(fname, "w"); |
911 |
if (fp == NULL) { |
912 |
sprintf(errmsg, "cannot open output frame \"%s\"", fname); |
913 |
error(SYSTEM, errmsg); |
914 |
} |
915 |
SET_FILE_BINARY(fp); |
916 |
if (!silent) { |
917 |
printf("\tWriting to \"%s\"\n", fname); |
918 |
fflush(stdout); |
919 |
} |
920 |
/* write header */ |
921 |
newheader("RADIANCE", fp); |
922 |
printargs(gargc, gargv, fp); |
923 |
fprintf(fp, "SOFTWARE= %s\n", VersionID); |
924 |
fprintf(fp, "FRAME=%d\n", fcur); |
925 |
fputnow(fp); |
926 |
fputs(VIEWSTR, fp); fprintview(&vw, fp); fputc('\n', fp); |
927 |
d = expspec_val(getexp(fcur)); |
928 |
if ((d < 0.99) | (d > 1.01)) |
929 |
fputexpos(d, fp); |
930 |
d = viewaspect(&vw) * hres / vres; |
931 |
if ((d < 0.99) | (d > 1.01)) |
932 |
fputaspect(d, fp); |
933 |
fputformat(COLRFMT, fp); |
934 |
fputc('\n', fp); /* end header */ |
935 |
fprtresolu(hres, vres, fp); |
936 |
if (fflush(fp) == EOF) |
937 |
goto writerr; |
938 |
#if (PIXSTANDARD != (YMAJOR|YDECR)) |
939 |
error(CONSISTENCY, "bad code in send_frame"); |
940 |
#endif |
941 |
for (y = vres; y--; ) /* write scanlines */ |
942 |
if (fwritescan(outbuffer+y*hres, hres, fp) < 0) |
943 |
goto writerr; |
944 |
if (fclose(fp) == EOF) |
945 |
goto writerr; |
946 |
if (vdef(ZNAME)) { /* output z-buffer */ |
947 |
sprintf(fname, vval(ZNAME), fcur); |
948 |
strcat(fname, ".zbf"); |
949 |
fp = fopen(fname, "w"); |
950 |
if (fp == NULL) { |
951 |
sprintf(errmsg, "cannot open z-file \"%s\"\n", fname); |
952 |
error(SYSTEM, errmsg); |
953 |
} |
954 |
SET_FILE_BINARY(fp); |
955 |
if (!silent) { |
956 |
printf("\tWriting depths to \"%s\"\n", fname); |
957 |
fflush(stdout); |
958 |
} |
959 |
for (y = vres; y--; ) |
960 |
if (fwrite(zbuffer+y*hres, sizeof(float), |
961 |
hres, fp) != hres) |
962 |
goto writerr; |
963 |
if (fclose(fp) == EOF) |
964 |
goto writerr; |
965 |
} |
966 |
if (vdef(MNAME)) { /* output motion buffer */ |
967 |
unsigned short *mbuffer = (unsigned short *)malloc( |
968 |
sizeof(unsigned short)*3*hres); |
969 |
int x, n; |
970 |
if (mbuffer == NULL) |
971 |
error(SYSTEM, "out of memory in send_frame"); |
972 |
sprintf(fname, vval(MNAME), fcur); |
973 |
strcat(fname, ".mvo"); |
974 |
fp = fopen(fname, "w"); |
975 |
if (fp == NULL) { |
976 |
sprintf(errmsg, "cannot open motion file \"%s\"\n", |
977 |
fname); |
978 |
error(SYSTEM, errmsg); |
979 |
} |
980 |
SET_FILE_BINARY(fp); |
981 |
if (!silent) { |
982 |
printf("\tWriting motion vectors to \"%s\"\n", fname); |
983 |
fflush(stdout); |
984 |
} |
985 |
for (y = vres; y--; ) { |
986 |
for (x = hres; x--; ) { |
987 |
n = fndx(x,y); |
988 |
mbuffer[3*x] = xmbuffer[n] + 0x8000; |
989 |
mbuffer[3*x+1] = ymbuffer[n] + 0x8000; |
990 |
mbuffer[3*x+2] = (oprev[n]!=OVOID)*0x8000; |
991 |
} |
992 |
if (fwrite(mbuffer, sizeof(*mbuffer), |
993 |
3*hres, fp) != 3*hres) |
994 |
goto writerr; |
995 |
} |
996 |
free((void *)mbuffer); |
997 |
if (fclose(fp) == EOF) |
998 |
goto writerr; |
999 |
} |
1000 |
return; /* all is well */ |
1001 |
writerr: |
1002 |
sprintf(errmsg, "error writing file \"%s\"", fname); |
1003 |
error(SYSTEM, errmsg); |
1004 |
} |
1005 |
|
1006 |
|
1007 |
void |
1008 |
free_frame(void) /* free frame allocation */ |
1009 |
{ |
1010 |
if (cbuffer == NULL) |
1011 |
return; |
1012 |
if (outbuffer != cbuffer) |
1013 |
free((void *)outbuffer); |
1014 |
outbuffer = NULL; |
1015 |
free((void *)cbuffer); cbuffer = NULL; |
1016 |
free((void *)zbuffer); zbuffer = NULL; |
1017 |
free((void *)obuffer); obuffer = NULL; |
1018 |
free((void *)xmbuffer); xmbuffer = NULL; |
1019 |
free((void *)ymbuffer); ymbuffer = NULL; |
1020 |
free((void *)cprev); cprev = NULL; |
1021 |
free((void *)zprev); zprev = NULL; |
1022 |
free((void *)oprev); oprev = NULL; |
1023 |
cerrmap = NULL; |
1024 |
val2map = NULL; |
1025 |
hres = vres = 0; |
1026 |
vw.type = vwprev.type = 0; |
1027 |
frm_stop = 0; |
1028 |
} |