110 |
|
|
111 |
|
/* Set our trimming threshold */ |
112 |
|
static void |
113 |
< |
set_threshold() |
113 |
> |
set_threshold(void) |
114 |
|
{ |
115 |
|
int hsum = 0; |
116 |
|
int i; |
235 |
|
return(nread); |
236 |
|
} |
237 |
|
|
238 |
+ |
/* Truncate any negative values to zero */ |
239 |
+ |
static void |
240 |
+ |
noneg(float *varr, int n) |
241 |
+ |
{ |
242 |
+ |
int nnan = 0; |
243 |
+ |
|
244 |
+ |
while (n-- > 0) { |
245 |
+ |
#ifdef isnan |
246 |
+ |
if (isnan(*varr)) { |
247 |
+ |
*varr = 0; |
248 |
+ |
++nnan; |
249 |
+ |
} else |
250 |
+ |
#endif |
251 |
+ |
if (*varr < 0) *varr = 0; |
252 |
+ |
++varr; |
253 |
+ |
} |
254 |
+ |
if (nnan) |
255 |
+ |
fprintf(stderr, "Warning: BSDF data contains %d NaN values\n", |
256 |
+ |
nnan); |
257 |
+ |
} |
258 |
+ |
|
259 |
|
/* Load data array, filling zeroes for rank 3 demi-tensor */ |
260 |
|
static void |
261 |
< |
load_data() |
261 |
> |
load_data(void) |
262 |
|
{ |
263 |
|
int (*readf)(float *, int) = NULL; |
264 |
|
|
310 |
|
} |
311 |
|
} else if (getc(stdin) != EOF) |
312 |
|
error(WARNING, "binary data past end of expected input"); |
313 |
+ |
|
314 |
+ |
noneg(datarr, 1<<(log2g*ttrank)); /* take precautions */ |
315 |
|
} |
316 |
|
|
317 |
+ |
/* Enforce reciprocity by averaging data values */ |
318 |
+ |
static void |
319 |
+ |
do_reciprocity(void) |
320 |
+ |
{ |
321 |
+ |
const int siz = 1<<log2g; |
322 |
+ |
float *v1p, *v2p; |
323 |
+ |
|
324 |
+ |
if (ttrank == 3) { |
325 |
+ |
int ix, ox, oy; |
326 |
+ |
for (ix = 0; ix < siz>>1; ix++) |
327 |
+ |
for (ox = 0; ox < siz; ox++) |
328 |
+ |
for (oy = 0; oy < siz>>1; oy++) { |
329 |
+ |
v1p = &dval3(ix,ox,oy); |
330 |
+ |
v2p = &dval3(ix,ox,siz-1-oy); |
331 |
+ |
*v1p = *v2p = .5f*( *v1p + *v2p ); |
332 |
+ |
} |
333 |
+ |
} else /* ttrank == 4 */ { |
334 |
+ |
int ix, iy, ox, oy; |
335 |
+ |
for (ix = 1; ix < siz; ix++) |
336 |
+ |
for (iy = 1; iy < siz; iy++) |
337 |
+ |
for (ox = 0; ox < ix; ox++) |
338 |
+ |
for (oy = 0; oy < iy; oy++) { |
339 |
+ |
v1p = &dval4(siz-1-ix,siz-1-iy,ox,oy); |
340 |
+ |
v2p = &dval4(siz-1-ox,siz-1-oy,ix,iy); |
341 |
+ |
*v1p = *v2p = .5f*( *v1p + *v2p ); |
342 |
+ |
} |
343 |
+ |
} |
344 |
+ |
} |
345 |
+ |
|
346 |
|
/* Load BSDF array, coalesce uniform regions and format as tensor tree */ |
347 |
|
int |
348 |
|
main(int argc, char *argv[]) |
349 |
|
{ |
350 |
|
int doheader = 1; |
351 |
+ |
int recipavg = 0; |
352 |
|
int bmin[4]; |
353 |
|
TNODE gtree; |
354 |
|
int i; |
355 |
|
/* get options and parameters */ |
356 |
|
for (i = 1; i < argc && argv[i][0] == '-'; i++) |
357 |
|
switch (argv[i][1]) { |
358 |
+ |
case 'a': |
359 |
+ |
recipavg = !recipavg; |
360 |
+ |
break; |
361 |
|
case 'h': |
362 |
|
doheader = !doheader; |
363 |
|
break; |
387 |
|
if (i < argc-1) |
388 |
|
goto userr; |
389 |
|
/* load input data */ |
390 |
< |
if (i == argc-1 && freopen(argv[i], "rb", stdin) == NULL) { |
390 |
> |
if (i == argc-1 && freopen(argv[i], "r", stdin) == NULL) { |
391 |
|
sprintf(errmsg, "cannot open input file '%s'", argv[i]); |
392 |
|
error(SYSTEM, errmsg); |
393 |
|
} |
394 |
|
if (infmt != 'a') |
395 |
|
SET_FILE_BINARY(stdin); |
396 |
+ |
#ifdef getc_unlocked /* avoid lock/unlock overhead */ |
397 |
+ |
flockfile(stdin); |
398 |
+ |
#endif |
399 |
|
load_data(); |
400 |
+ |
if (recipavg) |
401 |
+ |
do_reciprocity(); |
402 |
|
if (doheader) { |
403 |
|
for (i = 0; i < argc; i++) { |
404 |
|
fputs(argv[i], stdout); |
420 |
|
*/ |
421 |
|
return(0); |
422 |
|
userr: |
423 |
< |
fprintf(stderr, "Usage: %s [-h][-f{a|f|d}][-r {3|4}][-g log2grid][-t trim%%] [input]\n", |
423 |
> |
fprintf(stderr, "Usage: %s [-h][-a][-f{a|f|d}][-r {3|4}][-g log2grid][-t trim%%] [input]\n", |
424 |
|
argv[0]); |
425 |
|
return(1); |
426 |
|
} |