<p dir="ltr">We are using SSS for our very simple part of the teaser. A single character on outdoors lighting. Its surprising how much of a speed penalty there is with SSS :p Of course for a few seconds in the teaser it's alright but I'm foreseeing our project will be an SSS and hair frenzy!! :D</p>
<div class="gmail_quote">On Feb 9, 2014 12:00 PM, "Marco G" <<a href="mailto:digitalbath86@hotmail.com">digitalbath86@hotmail.com</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div><div dir="ltr">Hi,<div>about hair, haven't seen any specific paper link to help shading and rendering speedup.</div><div><br></div><div>Is there anything already implemented so far, or other ideas? </div><div>Reading at the pdf, the recent Importance sampling from Marschner et al, could be used in conjunction with Dual scattering,</div>
<div>i remember reading in this mailing list, people willing to integrate dual scattering.</div><div><br></div><div>Dual scattering - <a href="http://www.cemyuksel.com/research/dualscattering/dualscattering.pdf" style="font-size:12pt" target="_blank">http://www.cemyuksel.com/research/dualscattering/dualscattering.pdf</a></div>
<div><br></div><div>Importance sampling - <a href="http://cg.ibds.kit.edu/publications/pubhanika/2013_hairbrief.pdf" target="_blank">http://cg.ibds.kit.edu/publications/pubhanika/2013_hairbrief.pdf</a></div><div><br></div>
<div>A quote from the paper:</div><div><br></div><div><div><i>"Our sampling scheme can be used for direct illumination sampling</i></div><div><i>(where indirect illumination may be approximated by Dual Scattering</i></div>
<div><i>[Zinke et al. 2008]) and also for indirect illumination, where</i></div><div><i>sampling at each vertex of a random path is used to create photon</i></div><div><i>maps within hair volumes [Moon et al. 2008] or within a variety</i></div>
<div><i>of unbiased path-tracing algorithms"</i></div></div><div><br></div><div>Thoughts?</div><div><br></div><div>MG</div><div><br><br><div>> From: <a href="mailto:brechtvanlommel@pandora.be" target="_blank">brechtvanlommel@pandora.be</a><br>
> Date: Wed, 5 Feb 2014 17:02:11 +0100<br>> To: <a href="mailto:bf-cycles@blender.org" target="_blank">bf-cycles@blender.org</a><br>> Subject: [Bf-cycles] Optimization project<br>> <br>> Hi all,<br>> <br>
> With Gooseberry coming up, it would be good to start focusing on (CPU)<br>> optimization for the next few release cycles. For new features I still<br>> plan to finish volume rendering and add deformation motion blur soon,<br>
> but besides that a more organized optimization project is something<br>> I'd like to spend time on.<br>> <br>> See this wiki page for more details:<br>> <a href="http://wiki.blender.org/index.php/Dev:2.6/Source/Render/Cycles/Optimization" target="_blank">http://wiki.blender.org/index.php/Dev:2.6/Source/Render/Cycles/Optimization</a><br>
> <br>> There's already great work being done by Sv. Lockal and others in this<br>> area, on the low level optimization front, but there's many more<br>> opportunities. I'll try to add more detail and ideas over time, this<br>
> is just what I could think of off the top of my head.<br>> <br>> You can help out in various ways:<br>> * Contribute code to implement optimizations<br>> * Help gathering of test scenes representative of Gooseberry shots<br>
> * Suggest practical optimizations ideas<br>> <br>> It would also be cool if someone could set up some webpage with a<br>> graph that tracks Cycles performance on test scenes over time, maybe<br>> doing a render with the latest Git version once a week or so (like<br>
> <a href="http://arewefastyet.com/" target="_blank">http://arewefastyet.com/</a>).<br>> <br>> Thanks,<br>> Brecht.<br>> _______________________________________________<br>> Bf-cycles mailing list<br>> <a href="mailto:Bf-cycles@blender.org" target="_blank">Bf-cycles@blender.org</a><br>
> <a href="http://lists.blender.org/mailman/listinfo/bf-cycles" target="_blank">http://lists.blender.org/mailman/listinfo/bf-cycles</a><br></div></div> </div></div>
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<br></blockquote></div>