<div dir="ltr">I've asked about this few times. Spoke with Brecht directly and he said he wouldn't be against something like this.<div>I've got in touch with 2-3 devs to ask for an optionally biased integrator but nothing came out of it, whether for free or paid.</div>
<div><br></div><div>According to what Brecht said, it is indeed a big project, not much the first rough implementation (few weeks for a moderately experienced guy) but polishing and mantaining wouldn't be straightforward.</div>
<div><br></div><div>There is Mitsuba implementation (but GPL, not direct copy of it allowed...), tested quite a bit and it has some major problems with blotches, so it isn't complete i suppose (nothing compared to vray or corona accuracy)</div>
<div><br></div><div>In Cycles Optimization page there is also a point saying "<span style="color:rgb(51,51,51);font-size:12px;line-height:17.399999618530273px;background-color:rgb(255,255,255)"><font face="arial, helvetica, sans-serif">Use one of the recent filtering techniques to denoise the image. These gives artifacts in final renders but can give a better preview with few samples".. he said these filtering techniques are closely related to irradiance caching, and some of them can be done online (interactive) and perhaps they could be "applied" just on secondary rays, limiting visible artifacts, don't know really.</font></span></div>
<div><span style="color:rgb(51,51,51);font-size:12px;line-height:17.399999618530273px;background-color:rgb(255,255,255)"><font face="arial, helvetica, sans-serif"><br></font></span></div><div><span style="color:rgb(51,51,51);font-family:arial,helvetica,sans-serif;font-size:12px;line-height:17.399999618530273px">But all in all i think it's a matter of finding someone who can do such stuff, there is no manpower for this atm i think.</span><span style="color:rgb(51,51,51);font-size:12px;line-height:17.399999618530273px;background-color:rgb(255,255,255)"><font face="arial, helvetica, sans-serif"><br>
</font></span></div><div><span style="color:rgb(51,51,51);font-family:arial,helvetica,sans-serif;font-size:12px;line-height:17.399999618530273px"><br></span></div><div><span style="color:rgb(51,51,51);font-family:arial,helvetica,sans-serif;font-size:12px;line-height:17.399999618530273px">------------------</span></div>
<div><span style="color:rgb(51,51,51);font-size:12px;line-height:17.399999618530273px;background-color:rgb(255,255,255)"><font face="arial, helvetica, sans-serif">As far as archviz/interiors/noise goes, working on it with Cycles daily, the top features i think would boost speed/quality in this field would be:</font></span></div>
<div><span style="color:rgb(51,51,51);font-size:12px;line-height:17.399999618530273px;background-color:rgb(255,255,255)"><font face="arial, helvetica, sans-serif">- Sampling many lights more efficently with standard path tracing (not branched);</font></span></div>
<div><span style="color:rgb(51,51,51);font-size:12px;line-height:17.399999618530273px;background-color:rgb(255,255,255)"><font face="arial, helvetica, sans-serif">- Light portals;</font></span></div><div><span style="color:rgb(51,51,51);font-size:12px;line-height:17.399999618530273px;background-color:rgb(255,255,255)"><font face="arial, helvetica, sans-serif">- Approximated indirect diffuse rays/GI (irradiance cache, filtering...can't say)</font></span></div>
<div><span style="color:rgb(51,51,51);font-size:12px;line-height:17.399999618530273px;background-color:rgb(255,255,255)"><font face="arial, helvetica, sans-serif">- Reinhard like tone mapping (?), don't know details but with other engines if i clamp to 1.00 to avoid burnt areas the image isn't that flat as Cycles, it maintains good bright spots and good dark areas, need more testing though;</font></span></div>
<div><span style="color:rgb(51,51,51);font-size:12px;line-height:17.399999618530273px;background-color:rgb(255,255,255)"><font face="arial, helvetica, sans-serif">- Wide gamut color space (?), heard someone might work on it eventually</font></span></div>
<div><br></div><div><span style="color:rgb(51,51,51);font-size:12px;line-height:17.399999618530273px;background-color:rgb(255,255,255)"><font face="arial, helvetica, sans-serif">MG</font></span></div><div class="gmail_extra">
<br><br><div class="gmail_quote">2014-07-02 12:22 GMT+02:00 Mafteiu Scai Vlad <span dir="ltr"><<a href="mailto:mafteiuscaivlad@gmail.com" target="_blank">mafteiuscaivlad@gmail.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<div dir="ltr">Now that would be nice to have :)</div><div class="gmail_extra"><br clear="all"><div><div dir="ltr"><p><span style="color:rgb(31,73,125)">Vlad Mafteiu Scai<br></span></p>
<p><span style="color:rgb(31,73,125)">Mobile: <a href="tel:%2B45-5333-30-67" value="+4553333067" target="_blank">+45-5333-30-67</a></span></p><p><i><span style="color:rgb(31,73,125)">Mobile UI Designer, 3D Architectural Vizualizer & Product Visualization Artist<br>
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<span style="color:rgb(31,73,125)">Email: <a href="mailto:mafteiuscaivlad@gmail.com" style="color:purple" target="_blank">mafteiuscaivlad@gmail.com</a></span><div><font color="#1f497d"><br></font></div><div><font color="#1f497d">Portfolio: </font><a href="http://www.behance.net/motionseadesigns" target="_blank">http://www.behance.net/motionseadesigns</a><font color="#1f497d"><br>
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<br><br><div class="gmail_quote">2014-07-02 13:20 GMT+03:00 boura david <span dir="ltr"><<a href="mailto:def4d.fr@gmail.com" target="_blank">def4d.fr@gmail.com</a>></span>:<div><div class="h5"><br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
+1000<br>
<br>
2014-07-02 12:19 UTC+02:00, <a href="mailto:x3108@chello.at" target="_blank">x3108@chello.at</a> <<a href="mailto:x3108@chello.at" target="_blank">x3108@chello.at</a>>:<br>
<div><div>> Would it be a big problem to implement a „Redshift-like“ irradiance cache/GI<br>
> for biased rendering ?<br>
> I recently saw how incredibly fast Redshift on GPU is, it is biased, but<br>
> boy… you aren’t even noticing it. And so interactive!<br>
> Because Interiors and nearly all renders are incredible fast with irradiance<br>
> caches & Co., not to mention pristine clean!<br>
><br>
> Now Cycles hast almost every feature set needed, i guess only another biased<br>
> kernel need to be dispatched to the CPU/GPU for that ?<br>
> Am i right, or would it be too much of a programming nightmare ? Can it be<br>
> only a modified cycles code, or does it need a complete reprogramming ?<br>
><br>
> Then again, even if it would be some programming, wouldn’t biased be worth<br>
> it ? ;-)<br>
> Meaning that small artists don’t have a render farm for animation, and BI is<br>
> not actual anymore by far all tuts are with cycles.<br>
> I mean even Cycles, is not really a true spectral render (and MLT is slow),<br>
> basically being RGB biased, so… more biasing would not hurt at all. :-D<br>
><br>
> What do you guys say ?<br>
><br>
> Flavius<br>
><br>
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