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#include "otypes.h" |
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#if NIX |
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#include <sys/mman.h> |
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#include <sys/wait.h> |
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#include <sys/wait.h> |
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#endif |
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if (primRay) { |
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FVECT dvec; |
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#ifdef PMAP_PRIMARYDIR |
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/* Reverse incident direction to point to light source */ |
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dvec [0] = -primRay -> rdir [0]; |
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dvec [1] = -primRay -> rdir [1]; |
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dvec [2] = -primRay -> rdir [2]; |
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pmap -> lastPrimary.dir = encodedir(dvec); |
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#endif |
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#ifdef PMAP_PRIMARYPOS |
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VCOPY(pmap -> lastPrimary.pos, primRay -> rop); |
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#endif |
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void distribPhotonContrib (PhotonMap* pm, unsigned numProc) |
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{ |
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EmissionMap emap; |
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if (!pm -> distribTarget) |
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error(INTERNAL, "no photons to distribute in distribPhotonContrib"); |
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/* Get photon ports if specified */ |
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if (ambincl == 1) |
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getPhotonPorts(); |
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/* Get photon ports from modifier list */ |
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getPhotonPorts(photonPortList); |
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/* Get photon sensor modifiers */ |
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getPhotonSensors(photonSensorList); |
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/* Seed RNGs from PID for decorellated photon distribution */ |
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pmapSeed(randSeed + proc, partState); |
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pmapSeed(randSeed + proc, emitState); |
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pmapSeed(randSeed + proc, cntState); |
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pmapSeed(randSeed + proc, mediumState); |
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pmapSeed(randSeed + proc, scatterState); |
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pmapSeed(randSeed + proc, rouletteState); |
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pmapSeed(randSeed + (proc + 1) % numProc, emitState); |
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pmapSeed(randSeed + (proc + 2) % numProc, cntState); |
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pmapSeed(randSeed + (proc + 3) % numProc, mediumState); |
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pmapSeed(randSeed + (proc + 4) % numProc, scatterState); |
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pmapSeed(randSeed + (proc + 5) % numProc, rouletteState); |
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|
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#ifdef PMAP_SIGUSR |
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double partNumEmit; |
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unsigned long partEmitCnt; |
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double srcPhotonFlux, avgPhotonFlux; |
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unsigned portCnt, passCnt, prePassCnt; |
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float srcPreDistrib; |
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double srcNumEmit; /* # to emit from source */ |
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unsigned long srcNumDistrib; /* # stored */ |
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|
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void sigUsrDiags() |
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/* Loop diags via SIGUSR1 */ |
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{ |
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sprintf(errmsg, |
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"********************* Proc %d Diags *********************\n" |
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"srcIdx = %d (%s)\nportCnt = %d (%s)\npassCnt = %d\n" |
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"srcFlux = %f\nsrcPhotonFlux = %f\navgPhotonFlux = %f\n" |
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"partNumEmit = %f\npartEmitCnt = %lu\n\n", |
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proc, srcIdx, findmaterial(source [srcIdx].so) -> oname, |
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portCnt, photonPorts [portCnt].so -> oname, |
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passCnt, srcFlux [srcIdx], srcPhotonFlux, avgPhotonFlux, |
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partNumEmit, partEmitCnt); |
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eputs(errmsg); |
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fflush(stderr); |
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} |
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#endif |
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|
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#ifdef PMAP_SIGUSR |
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signal(SIGUSR1, sigUsrDiags); |
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#endif |
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|
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#ifdef DEBUG_PMAP |
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/* Output child process PID after random delay to prevent corrupted |
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* console output due to race condition */ |
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usleep(1e6 * pmapRandom(rouletteState)); |
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fprintf(stderr, "Proc %d: PID = %d " |
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"(waiting 10 sec to attach debugger...)\n", |
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proc, getpid()); |
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/* Allow time for debugger to attach to child process */ |
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sleep(10); |
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#endif |
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|
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/* ============================================================= |
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* 2-PASS PHOTON DISTRIBUTION |
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* Pass 1 (pre): emit fraction of target photon count |
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* Pass 2 (main): based on outcome of pass 1, estimate remaining |
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* number of photons to emit to approximate target |
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* count |
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< |
* ============================================================= */ |
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> |
* ============================================================= */ |
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for (srcIdx = 0; srcIdx < nsources; srcIdx++) { |
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#ifndef PMAP_SIGUSR |
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unsigned portCnt, passCnt = 0, prePassCnt = 0; |
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float srcPreDistrib = preDistrib; |
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double srcNumEmit = 0; /* # to emit from source */ |
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unsigned long srcNumDistrib = pm -> numPhotons; /* # stored */ |
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#else |
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passCnt = prePassCnt = 0; |
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srcPreDistrib = preDistrib; |
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srcNumEmit = 0; /* # to emit from source */ |
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srcNumDistrib = pm -> numPhotons; /* # stored */ |
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#endif |
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|
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if (srcFlux [srcIdx] < FTINY) |
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continue; |
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while (passCnt < 2) { |
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if (!passCnt) { |
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/* INIT PASS 1 */ |
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if (++prePassCnt > maxPreDistrib && !proc) { |
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> |
if (++prePassCnt > maxPreDistrib) { |
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/* Warn if no photons contributed after sufficient |
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* iterations; only output from subprocess 0 to reduce |
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* console clutter */ |
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< |
sprintf(errmsg, |
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< |
"source %s: too many prepasses, skipped", |
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< |
source [srcIdx].so -> oname); |
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< |
error(WARNING, errmsg); |
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> |
if (!proc) { |
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> |
sprintf(errmsg, |
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> |
"source %s: too many prepasses, skipped", |
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> |
source [srcIdx].so -> oname); |
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> |
error(WARNING, errmsg); |
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> |
} |
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> |
|
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break; |
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} |
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|
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} |
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else { |
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/* INIT PASS 2 */ |
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+ |
#ifndef PMAP_SIGUSR |
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double srcPhotonFlux, avgPhotonFlux; |
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#endif |
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|
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/* Based on the outcome of the predistribution we can now |
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* figure out how many more photons we have to emit from |
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srcPhotonFlux = srcFlux [srcIdx] / srcNumEmit; |
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avgPhotonFlux = photonFluxSum / (srcIdx + 1); |
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|
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< |
if (avgPhotonFlux > 0 && |
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> |
if (avgPhotonFlux > FTINY && |
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srcPhotonFlux / avgPhotonFlux < FTINY) { |
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/* Skip source if its photon flux is grossly below the |
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* running average, indicating negligible contributions |
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* at the expense of excessive distribution time; only |
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* output from subproc 0 to reduce console clutter */ |
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< |
sprintf(errmsg, |
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< |
"source %s: itsy bitsy photon flux, skipped", |
| 487 |
< |
source [srcIdx].so -> oname); |
| 488 |
< |
error(WARNING, errmsg); |
| 489 |
< |
srcNumEmit = 0; |
| 485 |
> |
if (!proc) { |
| 486 |
> |
sprintf(errmsg, |
| 487 |
> |
"source %s: itsy bitsy photon flux, skipped", |
| 488 |
> |
source [srcIdx].so -> oname); |
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> |
error(WARNING, errmsg); |
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> |
} |
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> |
|
| 492 |
> |
srcNumEmit = 0; /* Or just break??? */ |
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} |
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|
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/* Update sum of photon flux per light source */ |
| 530 |
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|
| 531 |
|
for (emap.partitionCnt = 0; emap.partitionCnt < emap.numPartitions; |
| 532 |
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emap.partitionCnt++) { |
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+ |
#ifndef PMAP_SIGUSR |
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double partNumEmit; |
| 535 |
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unsigned long partEmitCnt; |
| 536 |
+ |
#endif |
| 537 |
|
|
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|
/* Get photon origin within current source partishunn |
| 539 |
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* and build emission map */ |
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pm -> numPhotons); |
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|
eputs(errmsg); |
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|
fflush(stderr); |
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+ |
#endif |
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+ |
|
| 635 |
+ |
#ifdef PMAP_SIGUSR |
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+ |
signal(SIGUSR1, SIG_DFL); |
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#endif |
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|
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#if NIX |
