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| 24 |
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| 25 |
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| 26 |
– |
extern int contrib; /* coeff/contrib flag */ |
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– |
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static void setPmapContribParams (PhotonMap *pmap, LUTAB *srcContrib) |
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/* Set parameters for light source contributions */ |
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{ |
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PhotonSQNode *sq; |
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float r, invArea; |
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RREAL rayCoeff [3]; |
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< |
FVECT rdir, rop; |
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< |
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> |
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setcolor(irrad, 0, 0, 0); |
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if (!pmap -> maxGather) |
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if (islight(objptr(ray -> ro -> omod) -> otype)) |
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return; |
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| 113 |
< |
/* Set context for binning function evaluation and get cumulative path |
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> |
/* Get cumulative path |
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* coefficient up to photon lookup point */ |
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worldfunc(RCCONTEXT, ray); |
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raycontrib(rayCoeff, ray, PRIMARY); |
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/* Save incident ray's direction and hitpoint */ |
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VCOPY(rdir, ray -> rdir); |
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VCOPY(rop, ray -> rop); |
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/* Lookup photons */ |
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pmap -> squeueEnd = 0; |
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findPhotons(pmap, ray); |
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if (pmap -> srcContrib) { |
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const PhotonPrimary *primary = pmap -> primary + |
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sq -> photon -> primary; |
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< |
OBJREC *srcMod = objptr(source [primary -> srcIdx].so -> omod); |
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> |
SRCREC *sp = &source[primary -> srcIdx]; |
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> |
OBJREC *srcMod = objptr(sp -> so -> omod); |
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MODCONT *srcContrib = (MODCONT*)lu_find(pmap -> srcContrib, |
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srcMod -> oname) -> data; |
| 161 |
< |
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| 162 |
< |
if (srcContrib) { |
| 172 |
< |
/* Photon's emitting light source has modifier whose |
| 173 |
< |
* contributions are sought */ |
| 174 |
< |
int srcBin; |
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> |
if (!srcContrib) |
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> |
continue; |
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< |
/* Set incident dir and origin of photon's primary ray on |
| 165 |
< |
* light source for dummy shadow ray, and evaluate binning |
| 166 |
< |
* function */ |
| 167 |
< |
VCOPY(ray -> rdir, primary -> dir); |
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< |
VCOPY(ray -> rop, primary -> org); |
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< |
srcBin = evalue(srcContrib -> binv) + .5; |
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> |
/* Photon's emitting light source has modifier whose |
| 165 |
> |
* contributions are sought */ |
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> |
double srcBinReal; |
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> |
int srcBin; |
| 168 |
> |
RAY srcRay; |
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< |
if (srcBin < 0 || srcBin >= srcContrib -> nbins) { |
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< |
error(WARNING, "bad bin number (ignored)"); |
| 172 |
< |
continue; |
| 173 |
< |
} |
| 170 |
> |
if (srcContrib -> binv -> type != NUM) { |
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> |
/* Use intersection function to set shadow ray parameters |
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> |
* if it's not simply a constant |
| 173 |
> |
*/ |
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> |
rayorigin(&srcRay, SHADOW, NULL, NULL); |
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> |
srcRay.rsrc = primary -> srcIdx; |
| 176 |
> |
VCOPY(srcRay.rorg, primary -> pos); |
| 177 |
> |
VCOPY(srcRay.rdir, primary -> dir); |
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> |
if (!(source [primary -> srcIdx].sflags & SDISTANT ? |
| 179 |
> |
sourcehit(&srcRay) : |
| 180 |
> |
(*ofun[sp -> so -> otype].funp)(sp -> so, &srcRay))) |
| 181 |
> |
continue; /* XXX shouldn't happen! */ |
| 182 |
> |
worldfunc(RCCONTEXT, &srcRay); |
| 183 |
> |
set_eparams((char *)srcContrib -> params); |
| 184 |
> |
} |
| 185 |
> |
|
| 186 |
> |
if ((srcBinReal = evalue(srcContrib -> binv)) < -.5) |
| 187 |
> |
continue; /* silently ignore negative bins */ |
| 188 |
> |
|
| 189 |
> |
if ((srcBin = srcBinReal + .5) >= srcContrib -> nbins) { |
| 190 |
> |
error(WARNING, "bad bin number (ignored)"); |
| 191 |
> |
continue; |
| 192 |
> |
} |
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| 194 |
< |
if (!contrib) { |
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< |
/* Ray coefficient mode; normalise by light source radiance |
| 196 |
< |
* after applying distrib pattern */ |
| 197 |
< |
int j; |
| 198 |
< |
raytexture(ray, srcMod -> omod); |
| 199 |
< |
setcolor(ray -> rcol, srcMod -> oargs.farg [0], |
| 194 |
> |
if (!contrib) { |
| 195 |
> |
/* Ray coefficient mode; normalise by light source radiance |
| 196 |
> |
* after applying distrib pattern */ |
| 197 |
> |
int j; |
| 198 |
> |
raytexture(ray, srcMod -> omod); |
| 199 |
> |
setcolor(ray -> rcol, srcMod -> oargs.farg [0], |
| 200 |
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srcMod -> oargs.farg [1], srcMod -> oargs.farg [2]); |
| 201 |
< |
multcolor(ray -> rcol, ray -> pcol); |
| 202 |
< |
for (j = 0; j < 3; j++) |
| 203 |
< |
flux [j] = ray -> rcol [j] ? flux [j] / ray -> rcol [j] |
| 201 |
> |
multcolor(ray -> rcol, ray -> pcol); |
| 202 |
> |
for (j = 0; j < 3; j++) |
| 203 |
> |
flux [j] = ray -> rcol [j] ? flux [j] / ray -> rcol [j] |
| 204 |
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: 0; |
| 205 |
< |
} |
| 205 |
> |
} |
| 206 |
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| 207 |
< |
multcolor(flux, rayCoeff); |
| 208 |
< |
addcolor(srcContrib -> cbin [srcBin], flux); |
| 203 |
< |
} |
| 204 |
< |
else fprintf(stderr, "Skipped contrib from %s\n", srcMod -> oname); |
| 207 |
> |
multcolor(flux, rayCoeff); |
| 208 |
> |
addcolor(srcContrib -> cbin [srcBin], flux); |
| 209 |
|
} |
| 210 |
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} |
| 211 |
< |
|
| 208 |
< |
/* Restore incident ray's direction and hitpoint */ |
| 209 |
< |
VCOPY(ray -> rdir, rdir); |
| 210 |
< |
VCOPY(ray -> rop, rop); |
| 211 |
< |
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| 211 |
> |
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| 212 |
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return; |
| 213 |
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} |
| 214 |
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