19 |
|
#include "bsdfrep.h" |
20 |
|
/* global argv[0] */ |
21 |
|
char *progname; |
22 |
+ |
/* reciprocity averaging option */ |
23 |
+ |
static const char *recip = " -a"; |
24 |
|
/* percentage to cull (<0 to turn off) */ |
25 |
|
static double pctcull = 90.; |
26 |
|
/* sampling order */ |
29 |
|
const double ssamp_thresh = 0.35; |
30 |
|
/* number of super-samples */ |
31 |
|
#ifndef NSSAMP |
32 |
< |
#define NSSAMP 100 |
32 |
> |
#define NSSAMP 64 |
33 |
|
#endif |
34 |
|
/* limit on number of RBF lobes */ |
35 |
|
static int lobe_lim = 15000; |
40 |
|
static char *wrapBSDF[MAXCARG] = {"wrapBSDF", "-U"}; |
41 |
|
static int wbsdfac = 2; |
42 |
|
|
43 |
< |
/* Add argument to wrapBSDF, allocating space if isstatic */ |
43 |
> |
/* Add argument to wrapBSDF, allocating space if !isstatic */ |
44 |
|
static void |
45 |
|
add_wbsdf(const char *arg, int isstatic) |
46 |
|
{ |
129 |
|
eval_isotropic(char *funame) |
130 |
|
{ |
131 |
|
const int sqres = 1<<samp_order; |
132 |
+ |
const double sqfact = 1./(double)sqres; |
133 |
|
FILE *ofp, *uvfp[2]; |
134 |
|
int assignD = 0; |
135 |
|
char cmd[128]; |
138 |
|
float bsdf, uv[2]; |
139 |
|
|
140 |
|
if (pctcull >= 0) { |
141 |
< |
sprintf(cmd, "rttree_reduce -a -h -ff -r 3 -t %f -g %d > %s", |
142 |
< |
pctcull, samp_order, create_component_file(0)); |
141 |
> |
sprintf(cmd, "rttree_reduce%s -h -ff -r 3 -t %f -g %d > %s", |
142 |
> |
recip, pctcull, samp_order, create_component_file(0)); |
143 |
|
ofp = popen(cmd, "w"); |
144 |
|
if (ofp == NULL) { |
145 |
|
fprintf(stderr, "%s: cannot create pipe to rttree_reduce\n", |
152 |
|
#endif |
153 |
|
if (rbf_colorimetry == RBCtristimulus) { |
154 |
|
double uvcull = 100. - (100.-pctcull)*.25; |
155 |
< |
sprintf(cmd, "rttree_reduce -a -h -ff -r 3 -t %f -g %d > %s", |
156 |
< |
uvcull, samp_order, create_component_file(1)); |
155 |
> |
sprintf(cmd, "rttree_reduce%s -h -ff -r 3 -t %f -g %d > %s", |
156 |
> |
recip, uvcull, samp_order, create_component_file(1)); |
157 |
|
uvfp[0] = popen(cmd, "w"); |
158 |
< |
sprintf(cmd, "rttree_reduce -a -h -ff -r 3 -t %f -g %d > %s", |
159 |
< |
uvcull, samp_order, create_component_file(2)); |
158 |
> |
sprintf(cmd, "rttree_reduce%s -h -ff -r 3 -t %f -g %d > %s", |
159 |
> |
recip, uvcull, samp_order, create_component_file(2)); |
160 |
|
uvfp[1] = popen(cmd, "w"); |
161 |
|
if ((uvfp[0] == NULL) | (uvfp[1] == NULL)) { |
162 |
|
fprintf(stderr, "%s: cannot open pipes to uv output\n", |
188 |
|
fputs("{\n", uvfp[1]); |
189 |
|
} |
190 |
|
} |
191 |
< |
/* need to assign Dx, Dy, Dz? */ |
189 |
< |
if (funame != NULL) |
191 |
> |
if (funame != NULL) /* need to assign Dx, Dy, Dz? */ |
192 |
|
assignD = (fundefined(funame) < 6); |
193 |
|
/* run through directions */ |
194 |
|
for (ix = 0; ix < sqres/2; ix++) { |
195 |
|
RBFNODE *rbf = NULL; |
196 |
< |
iovec[0] = 2.*(ix+.5)/sqres - 1.; |
196 |
> |
iovec[0] = 2.*sqfact*(ix+.5) - 1.; |
197 |
|
iovec[1] = .0; |
198 |
|
iovec[2] = input_orient * sqrt(1. - iovec[0]*iovec[0]); |
199 |
|
if (funame == NULL) |
201 |
|
for (ox = 0; ox < sqres; ox++) { |
202 |
|
float last_bsdf = -1; |
203 |
|
for (oy = 0; oy < sqres; oy++) { |
204 |
< |
SDsquare2disk(iovec+3, (ox+.5)/sqres, (oy+.5)/sqres); |
204 |
> |
SDsquare2disk(iovec+3, (ox+.5)*sqfact, (oy+.5)*sqfact); |
205 |
|
iovec[5] = output_orient * |
206 |
|
sqrt(1. - iovec[3]*iovec[3] - iovec[4]*iovec[4]); |
207 |
|
if (funame == NULL) { |
208 |
|
SDValue sdv; |
209 |
|
eval_rbfcol(&sdv, rbf, iovec+3); |
210 |
|
bsdf = sdv.cieY; |
211 |
+ |
#if (NSSAMP > 0) |
212 |
+ |
if (abs_diff(bsdf, last_bsdf) > ssamp_thresh) { |
213 |
+ |
int ssi; |
214 |
+ |
double ssa[2], sum = 0, usum = 0, vsum = 0; |
215 |
+ |
/* super-sample voxel */ |
216 |
+ |
for (ssi = NSSAMP; ssi--; ) { |
217 |
+ |
SDmultiSamp(ssa, 2, (ssi+frandom()) * |
218 |
+ |
(1./NSSAMP)); |
219 |
+ |
SDsquare2disk(iovec+3, (ox+ssa[0])*sqfact, |
220 |
+ |
(oy+ssa[1])*sqfact); |
221 |
+ |
iovec[5] = output_orient * |
222 |
+ |
sqrt(1. - iovec[3]*iovec[3] - iovec[4]*iovec[4]); |
223 |
+ |
eval_rbfcol(&sdv, rbf, iovec+3); |
224 |
+ |
sum += sdv.cieY; |
225 |
+ |
if (rbf_colorimetry == RBCtristimulus) { |
226 |
+ |
sdv.cieY /= |
227 |
+ |
-2.*sdv.spec.cx + 12.*sdv.spec.cy + 3.; |
228 |
+ |
usum += 4.*sdv.spec.cx * sdv.cieY; |
229 |
+ |
vsum += 9.*sdv.spec.cy * sdv.cieY; |
230 |
+ |
} |
231 |
+ |
} |
232 |
+ |
bsdf = sum * (1./NSSAMP); |
233 |
+ |
if (rbf_colorimetry == RBCtristimulus) { |
234 |
+ |
uv[0] = usum / (sum+FTINY); |
235 |
+ |
uv[1] = vsum / (sum+FTINY); |
236 |
+ |
} |
237 |
+ |
} else |
238 |
+ |
#endif |
239 |
|
if (rbf_colorimetry == RBCtristimulus) { |
210 |
– |
c_ccvt(&sdv.spec, C_CSXY); |
240 |
|
uv[0] = uv[1] = 1. / |
241 |
|
(-2.*sdv.spec.cx + 12.*sdv.spec.cy + 3.); |
242 |
|
uv[0] *= 4.*sdv.spec.cx; |
258 |
|
for (ssi = NSSAMP; ssi--; ) { |
259 |
|
SDmultiSamp(ssa, 3, (ssi+frandom()) * |
260 |
|
(1./NSSAMP)); |
261 |
< |
ssvec[0] = 2.*(ix+ssa[0])/sqres - 1.; |
261 |
> |
ssvec[0] = 2.*sqfact*(ix+ssa[0]) - 1.; |
262 |
|
ssvec[1] = .0; |
263 |
|
ssvec[2] = input_orient * |
264 |
|
sqrt(1. - ssvec[0]*ssvec[0]); |
265 |
< |
SDsquare2disk(ssvec+3, (ox+ssa[1])/sqres, |
266 |
< |
(oy+ssa[2])/sqres); |
265 |
> |
SDsquare2disk(ssvec+3, (ox+ssa[1])*sqfact, |
266 |
> |
(oy+ssa[2])*sqfact); |
267 |
|
ssvec[5] = output_orient * |
268 |
|
sqrt(1. - ssvec[3]*ssvec[3] - |
269 |
|
ssvec[4]*ssvec[4]); |
275 |
|
} |
276 |
|
sum += funvalue(funame, 6, ssvec); |
277 |
|
} |
278 |
< |
bsdf = sum/NSSAMP; |
278 |
> |
bsdf = sum * (1./NSSAMP); |
279 |
|
} |
280 |
|
#endif |
281 |
|
} |
282 |
|
if (pctcull >= 0) |
283 |
< |
fwrite(&bsdf, sizeof(bsdf), 1, ofp); |
283 |
> |
putbinary(&bsdf, sizeof(bsdf), 1, ofp); |
284 |
|
else |
285 |
|
fprintf(ofp, "\t%.3e\n", bsdf); |
286 |
|
|
287 |
|
if (rbf_colorimetry == RBCtristimulus) { |
288 |
|
if (pctcull >= 0) { |
289 |
< |
fwrite(&uv[0], sizeof(*uv), 1, uvfp[0]); |
290 |
< |
fwrite(&uv[1], sizeof(*uv), 1, uvfp[1]); |
289 |
> |
putbinary(&uv[0], sizeof(*uv), 1, uvfp[0]); |
290 |
> |
putbinary(&uv[1], sizeof(*uv), 1, uvfp[1]); |
291 |
|
} else { |
292 |
|
fprintf(uvfp[0], "\t%.3e\n", uv[0]); |
293 |
|
fprintf(uvfp[1], "\t%.3e\n", uv[1]); |
298 |
|
} |
299 |
|
if (rbf != NULL) |
300 |
|
free(rbf); |
301 |
< |
prog_show((ix+1.)*(2./sqres)); |
301 |
> |
prog_show((ix+1.)*(2.*sqfact)); |
302 |
|
} |
303 |
+ |
prog_done(); |
304 |
|
if (pctcull >= 0) { /* finish output */ |
305 |
|
if (pclose(ofp)) { |
306 |
|
fprintf(stderr, "%s: error running rttree_reduce on Y\n", |
336 |
|
} |
337 |
|
} |
338 |
|
} |
309 |
– |
prog_done(); |
339 |
|
} |
340 |
|
|
341 |
|
/* Interpolate and output anisotropic BSDF data */ |
343 |
|
eval_anisotropic(char *funame) |
344 |
|
{ |
345 |
|
const int sqres = 1<<samp_order; |
346 |
+ |
const double sqfact = 1./(double)sqres; |
347 |
|
FILE *ofp, *uvfp[2]; |
348 |
|
int assignD = 0; |
349 |
|
char cmd[128]; |
352 |
|
float bsdf, uv[2]; |
353 |
|
|
354 |
|
if (pctcull >= 0) { |
355 |
+ |
const char *avgopt = (input_orient>0 ^ output_orient>0) |
356 |
+ |
? "" : recip; |
357 |
|
sprintf(cmd, "rttree_reduce%s -h -ff -r 4 -t %f -g %d > %s", |
358 |
< |
(input_orient>0 ^ output_orient>0) ? "" : " -a", |
359 |
< |
pctcull, samp_order, create_component_file(0)); |
358 |
> |
avgopt, pctcull, samp_order, |
359 |
> |
create_component_file(0)); |
360 |
|
ofp = popen(cmd, "w"); |
361 |
|
if (ofp == NULL) { |
362 |
|
fprintf(stderr, "%s: cannot create pipe to rttree_reduce\n", |
370 |
|
if (rbf_colorimetry == RBCtristimulus) { |
371 |
|
double uvcull = 100. - (100.-pctcull)*.25; |
372 |
|
sprintf(cmd, "rttree_reduce%s -h -ff -r 4 -t %f -g %d > %s", |
373 |
< |
(input_orient>0 ^ output_orient>0) ? "" : " -a", |
374 |
< |
uvcull, samp_order, create_component_file(1)); |
373 |
> |
avgopt, uvcull, samp_order, |
374 |
> |
create_component_file(1)); |
375 |
|
uvfp[0] = popen(cmd, "w"); |
376 |
|
sprintf(cmd, "rttree_reduce%s -h -ff -r 4 -t %f -g %d > %s", |
377 |
< |
(input_orient>0 ^ output_orient>0) ? "" : " -a", |
378 |
< |
uvcull, samp_order, create_component_file(2)); |
377 |
> |
avgopt, uvcull, samp_order, |
378 |
> |
create_component_file(2)); |
379 |
|
uvfp[1] = popen(cmd, "w"); |
380 |
|
if ((uvfp[0] == NULL) | (uvfp[1] == NULL)) { |
381 |
|
fprintf(stderr, "%s: cannot open pipes to uv output\n", |
407 |
|
fputs("{\n", uvfp[1]); |
408 |
|
} |
409 |
|
} |
410 |
< |
/* need to assign Dx, Dy, Dz? */ |
379 |
< |
if (funame != NULL) |
410 |
> |
if (funame != NULL) /* need to assign Dx, Dy, Dz? */ |
411 |
|
assignD = (fundefined(funame) < 6); |
412 |
|
/* run through directions */ |
413 |
|
for (ix = 0; ix < sqres; ix++) |
414 |
|
for (iy = 0; iy < sqres; iy++) { |
415 |
|
RBFNODE *rbf = NULL; /* Klems reversal */ |
416 |
< |
SDsquare2disk(iovec, 1.-(ix+.5)/sqres, 1.-(iy+.5)/sqres); |
416 |
> |
SDsquare2disk(iovec, 1.-(ix+.5)*sqfact, 1.-(iy+.5)*sqfact); |
417 |
|
iovec[2] = input_orient * |
418 |
|
sqrt(1. - iovec[0]*iovec[0] - iovec[1]*iovec[1]); |
419 |
|
if (funame == NULL) |
421 |
|
for (ox = 0; ox < sqres; ox++) { |
422 |
|
float last_bsdf = -1; |
423 |
|
for (oy = 0; oy < sqres; oy++) { |
424 |
< |
SDsquare2disk(iovec+3, (ox+.5)/sqres, (oy+.5)/sqres); |
424 |
> |
SDsquare2disk(iovec+3, (ox+.5)*sqfact, (oy+.5)*sqfact); |
425 |
|
iovec[5] = output_orient * |
426 |
|
sqrt(1. - iovec[3]*iovec[3] - iovec[4]*iovec[4]); |
427 |
|
if (funame == NULL) { |
428 |
|
SDValue sdv; |
429 |
|
eval_rbfcol(&sdv, rbf, iovec+3); |
430 |
|
bsdf = sdv.cieY; |
431 |
+ |
#if (NSSAMP > 0) |
432 |
+ |
if (abs_diff(bsdf, last_bsdf) > ssamp_thresh) { |
433 |
+ |
int ssi; |
434 |
+ |
double ssa[2], sum = 0, usum = 0, vsum = 0; |
435 |
+ |
/* super-sample voxel */ |
436 |
+ |
for (ssi = NSSAMP; ssi--; ) { |
437 |
+ |
SDmultiSamp(ssa, 2, (ssi+frandom()) * |
438 |
+ |
(1./NSSAMP)); |
439 |
+ |
SDsquare2disk(iovec+3, (ox+ssa[0])*sqfact, |
440 |
+ |
(oy+ssa[1])*sqfact); |
441 |
+ |
iovec[5] = output_orient * |
442 |
+ |
sqrt(1. - iovec[3]*iovec[3] - iovec[4]*iovec[4]); |
443 |
+ |
eval_rbfcol(&sdv, rbf, iovec+3); |
444 |
+ |
sum += sdv.cieY; |
445 |
+ |
if (rbf_colorimetry == RBCtristimulus) { |
446 |
+ |
sdv.cieY /= |
447 |
+ |
-2.*sdv.spec.cx + 12.*sdv.spec.cy + 3.; |
448 |
+ |
usum += 4.*sdv.spec.cx * sdv.cieY; |
449 |
+ |
vsum += 9.*sdv.spec.cy * sdv.cieY; |
450 |
+ |
} |
451 |
+ |
} |
452 |
+ |
bsdf = sum * (1./NSSAMP); |
453 |
+ |
if (rbf_colorimetry == RBCtristimulus) { |
454 |
+ |
uv[0] = usum / (sum+FTINY); |
455 |
+ |
uv[1] = vsum / (sum+FTINY); |
456 |
+ |
} |
457 |
+ |
} else |
458 |
+ |
#endif |
459 |
|
if (rbf_colorimetry == RBCtristimulus) { |
401 |
– |
c_ccvt(&sdv.spec, C_CSXY); |
460 |
|
uv[0] = uv[1] = 1. / |
461 |
|
(-2.*sdv.spec.cx + 12.*sdv.spec.cy + 3.); |
462 |
|
uv[0] *= 4.*sdv.spec.cx; |
478 |
|
for (ssi = NSSAMP; ssi--; ) { |
479 |
|
SDmultiSamp(ssa, 4, (ssi+frandom()) * |
480 |
|
(1./NSSAMP)); |
481 |
< |
SDsquare2disk(ssvec, 1.-(ix+ssa[0])/sqres, |
482 |
< |
1.-(iy+ssa[1])/sqres); |
481 |
> |
SDsquare2disk(ssvec, 1.-(ix+ssa[0])*sqfact, |
482 |
> |
1.-(iy+ssa[1])*sqfact); |
483 |
|
ssvec[2] = input_orient * |
484 |
|
sqrt(1. - ssvec[0]*ssvec[0] - |
485 |
|
ssvec[1]*ssvec[1]); |
486 |
< |
SDsquare2disk(ssvec+3, (ox+ssa[2])/sqres, |
487 |
< |
(oy+ssa[3])/sqres); |
486 |
> |
SDsquare2disk(ssvec+3, (ox+ssa[2])*sqfact, |
487 |
> |
(oy+ssa[3])*sqfact); |
488 |
|
ssvec[5] = output_orient * |
489 |
|
sqrt(1. - ssvec[3]*ssvec[3] - |
490 |
|
ssvec[4]*ssvec[4]); |
496 |
|
} |
497 |
|
sum += funvalue(funame, 6, ssvec); |
498 |
|
} |
499 |
< |
bsdf = sum/NSSAMP; |
499 |
> |
bsdf = sum * (1./NSSAMP); |
500 |
|
} |
501 |
|
#endif |
502 |
|
} |
503 |
|
if (pctcull >= 0) |
504 |
< |
fwrite(&bsdf, sizeof(bsdf), 1, ofp); |
504 |
> |
putbinary(&bsdf, sizeof(bsdf), 1, ofp); |
505 |
|
else |
506 |
|
fprintf(ofp, "\t%.3e\n", bsdf); |
507 |
|
|
508 |
|
if (rbf_colorimetry == RBCtristimulus) { |
509 |
|
if (pctcull >= 0) { |
510 |
< |
fwrite(&uv[0], sizeof(*uv), 1, uvfp[0]); |
511 |
< |
fwrite(&uv[1], sizeof(*uv), 1, uvfp[1]); |
510 |
> |
putbinary(&uv[0], sizeof(*uv), 1, uvfp[0]); |
511 |
> |
putbinary(&uv[1], sizeof(*uv), 1, uvfp[1]); |
512 |
|
} else { |
513 |
|
fprintf(uvfp[0], "\t%.3e\n", uv[0]); |
514 |
|
fprintf(uvfp[1], "\t%.3e\n", uv[1]); |
521 |
|
free(rbf); |
522 |
|
prog_show((ix*sqres+iy+1.)/(sqres*sqres)); |
523 |
|
} |
524 |
+ |
prog_done(); |
525 |
|
if (pctcull >= 0) { /* finish output */ |
526 |
|
if (pclose(ofp)) { |
527 |
|
fprintf(stderr, "%s: error running rttree_reduce on Y\n", |
551 |
|
} |
552 |
|
} |
553 |
|
} |
495 |
– |
prog_done(); |
554 |
|
} |
555 |
|
|
556 |
< |
#ifdef _WIN32 |
556 |
> |
#if defined(_WIN32) || defined(_WIN64) |
557 |
|
/* Execute wrapBSDF command (may never return) */ |
558 |
|
static int |
559 |
|
wrap_up(void) |
623 |
|
esupport &= ~(E_INCHAN|E_OUTCHAN); |
624 |
|
scompile("PI:3.14159265358979323846", NULL, 0); |
625 |
|
biggerlib(); |
626 |
< |
for (i = 1; i < argc-1 && (argv[i][0] == '-') | (argv[i][0] == '+'); i++) |
626 |
> |
for (i = 1; i < argc && (argv[i][0] == '-') | (argv[i][0] == '+'); i++) |
627 |
|
switch (argv[i][1]) { /* get options */ |
628 |
|
case 'e': |
629 |
|
scompile(argv[++i], NULL, 0); |
638 |
|
} else |
639 |
|
dofwd = (argv[i][0] == '+'); |
640 |
|
break; |
641 |
+ |
case 'a': |
642 |
+ |
recip = (argv[i][0] == '+') ? " -a" : ""; |
643 |
+ |
break; |
644 |
|
case 'b': |
645 |
|
dobwd = (argv[i][0] == '+'); |
646 |
|
break; |
756 |
|
return(wrap_up()); |
757 |
|
userr: |
758 |
|
fprintf(stderr, |
759 |
< |
"Usage: %s [-g Nlog2][-t pctcull][-l maxlobes] [bsdf.sir ..] > bsdf.xml\n", |
759 |
> |
"Usage: %s [{+|-}a][-g Nlog2][-t pctcull][-l maxlobes] [bsdf.sir ..] > bsdf.xml\n", |
760 |
|
progname); |
761 |
|
fprintf(stderr, |
762 |
< |
" or: %s -t{3|4} [-g Nlog2][-t pctcull][{+|-}for[ward]][{+|-}b[ackward]][-e expr][-f file] bsdf_func > bsdf.xml\n", |
762 |
> |
" or: %s -t{3|4} [{+|-}a][-g Nlog2][-t pctcull][{+|-}for[ward]][{+|-}b[ackward]][-e expr][-f file] bsdf_func > bsdf.xml\n", |
763 |
|
progname); |
764 |
|
return(1); |
765 |
|
} |