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#ifndef PMAPDATA_H |
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#define PMAPDATA_H |
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|
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#include "ray.h" |
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#ifndef NIX |
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#if defined(_WIN32) || defined(_WIN64) |
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#define NIX 0 |
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#else |
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#define NIX 1 |
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#endif |
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#endif |
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|
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#if (defined(PMAP_OOC) && !NIX) |
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#error "OOC currently only supported on NIX -- tuff luck." |
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#endif |
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|
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#ifdef PMAP_CBDM |
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/* Enable photon primary hitpoints and incident directions (see struct |
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* PhotonPrimary below). Note this will increase the size of photon |
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* primaries 9-fold (10-fold after alignment)!!! */ |
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#define PMAP_PRIMARYPOS |
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#define PMAP_PRIMARYDIR |
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#endif |
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|
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#include "ray.h" |
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#include "pmaptype.h" |
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#include "paths.h" |
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#include "lookup.h" |
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#include <stdint.h> |
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typedef struct { |
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int16 srcIdx; /* Index of emitting light source */ |
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/* !!! REDUCED FROM 32 BITS !!! */ |
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#ifdef PMAP_PRIMARYDIR |
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int32 dir; /* Encoded ray direction */ |
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#ifdef PMAP_PRIMARYPOS |
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#endif |
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#ifdef PMAP_PRIMARYPOS |
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float pos [3]; /* Hit point */ |
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#endif |
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#endif |
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} PhotonPrimary; |
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|
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#define photonSrcIdx(pm, p) ((pm)->primaries[(p)->primary].srcIdx) |
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/* Photon primary ray index type and limit */ |
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typedef uint32 PhotonPrimaryIdx; |
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typedef uint32 PhotonPrimaryIdx; |
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#define PMAP_MAXPRIMARY UINT32_MAX |
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|
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/* Macros for photon's generating subprocess field */ |
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#ifdef PMAP_OOC |
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#ifdef PMAP_OOC |
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#define PMAP_PROCBITS 7 |
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#else |
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#define PMAP_PROCBITS 5 |
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#else |
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#define PMAP_PROCBITS 5 |
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#endif |
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#define PMAP_MAXPROC (1 << PMAP_PROCBITS) |
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#define PMAP_GETRAYPROC(r) ((r) -> crtype >> 8) |
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}; |
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|
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#ifdef PMAP_FLOAT_FLUX |
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COLOR flux; |
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COLOR flux; |
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#else |
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COLR flux; |
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COLR flux; |
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#endif |
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PhotonPrimaryIdx primary; /* Index to primary ray */ |
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} Photon; |
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#define getPhotonFlux(p,f) colr_color(f, (p) -> flux) |
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#endif |
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– |
|
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/* Bias compensation history node */ |
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typedef struct { |
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typedef struct { |
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COLOR irrad; |
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float weight; |
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} PhotonBiasCompNode; |
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#endif |
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|
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|
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/* Mean size of heapfile write buffer, in number of photons */ |
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#define PMAP_HEAPBUFSIZE 1e6 |
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|
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/* Mean idle time between heap locking attempts, in usec */ |
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#define PMAP_HEAPBUFSLEEP 2e6 |
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|
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/* Temporary filename for photon heaps */ |
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#define PMAP_TMPFNAME TEMPLATE |
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#define PMAP_TMPFNLEN (TEMPLEN + 1) |
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|
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|
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typedef struct PhotonMap { |
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PhotonMapType type; /* See pmaptype.h */ |
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char *fileName; /* Photon map file */ |
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* ================================================================ */ |
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FILE *heap; /* Unsorted photon heap prior to |
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construction of store */ |
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char heapFname [sizeof(PMAP_TMPFNAME)]; |
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Photon *heapBuf; /* Write buffer for above */ |
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unsigned long heapBufLen, /* Current & max size of heapBuf */ |
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heapBufSize; |
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PhotonStorage store; /* Photon storage in spacee |
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subdividing data struct */ |
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> |
PhotonStorage store; /* Photon storage in space |
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subdividing data struct */ |
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|
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/* ================================================================ |
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* PHOTON DISTRIBUTION STUFF |
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|
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/* ================================================================ |
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* BIAS COMPENSATION STUFF |
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< |
* ================================================================ */ |
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> |
* ================================================================ */ |
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PhotonBiasCompNode *biasCompHist; /* Bias compensation history */ |
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|
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|
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/* ================================================================ |
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* STATISTIX |
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< |
* ================================================================ */ |
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> |
* ================================================================ */ |
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unsigned long totalGathered, /* Total photons gathered */ |
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numDensity, /* Num density estimates */ |
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numLookups, /* Counters for short photon lookups */ |
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#define isContribPmap(p) ((p) -> type == PMAP_TYPE_CONTRIB) |
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#define isVolumePmap(p) ((p) -> type == PMAP_TYPE_VOLUME) |
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|
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/* Mean size of heapfile write buffer, in number of photons */ |
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#define PMAP_HEAPBUFSIZE 1e6 |
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|
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/* Mean idle time between heap locking attempts, in usec */ |
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#define PMAP_HEAPBUFSLEEP 2e6 |
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|
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/* Shared memory file for parallelised photon distribution */ |
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#if 0 |
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– |
#define PMAP_SHMFNAME "/mkpmap-%d" |
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#else |
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#define PMAP_SHMFNAME "mkpmapXXXXXX" |
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#endif |
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|
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|
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void initPhotonMap (PhotonMap *pmap, PhotonMapType t); |
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are placed search queue starting with the furthest photon at pmap -> |
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squeue.node, and pmap -> squeue.tail being the number actually found. */ |
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|
|
| 320 |
< |
void find1Photon (PhotonMap *pmap, const RAY *ray, Photon *photon); |
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< |
/* Finds single closest photon to ray -> rop with similar normal. |
| 322 |
< |
Returns NULL if none found. */ |
| 320 |
> |
Photon *find1Photon (PhotonMap *pmap, const RAY *ray, Photon *photon); |
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> |
/* Find single closest photon to ray -> rop with similar normal. |
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> |
Return NULL if none found, else the supplied Photon* buffer, |
| 323 |
> |
indicating that it contains a valid photon. */ |
| 324 |
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|
| 325 |
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void getPhoton (PhotonMap *pmap, PhotonIdx idx, Photon *photon); |
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/* Retrieve photon referenced by idx from pmap -> store */ |
