I know you guys all have secret weapons, haha. Right, escher glossy tries to follow more the cgi glossy shading thinking. Hope you will have some free time later to testdrive our plugins :) The integral image component in Escher is actually a standalone plugin where techy compers could use it to do quick arbitrary box filtering too :)
On Tuesday, June 4, 2013, Michael Garrett wrote: > Hi Mike, that sounds awesome, and Howard, point taken that it may be > secret sauce ;) > It's a bit of a holy grail being able to easily do fast glossy spec > importance sampling even though it's not full ray tracing. > > I created a gizmo and put it on Nukepedia a while ago which was my hacky > look at prefiltering an environment map. Nukepedia is down right now but > it's called EnvConvolve. Basically it convolves the image based on a > specular brdf but it's not a complete solution by any means. > > > On 3 June 2013 13:29, Mike Wong | artixels.gmail > <[email protected]<javascript:_e({}, 'cvml', '[email protected]');> > > wrote: > >> Hey Horward, glad you responded to Michael, i missed it somehow and thank >> you for checking other vids too :) >> >> Escher glossy shader is a bit more than just a lookup, it samples >> additional points from the lightprobe based on simple importance sampling >> and then it further allows you to prefilter each sample, the prefiltering >> is done via an on-the-fly precomputed integral image . Such combination >> allows a speedy and two-level control of the glossiness. By the way, the >> SH can do phong shading if you prefer another look. SH + glossy are >> good friends :) >> >> Best, >> Mike >> >> >> On Tuesday, June 4, 2013, Howard Jones wrote: >> >>> Think you're supposed to buy it not take their trade secrets ;) >>> H >>> ------------------------------ >>> *From:* Michael Garrett <[email protected]> >>> *To:* Nuke user discussion <[email protected]> >>> *Sent:* Monday, 3 June 2013, 17:40 >>> *Subject:* Re: [Nuke-users] [plug] Escher Spherical Harmonics tools >>> >>> Thanks for posting this! How are you doing the glossy specular? Do you >>> calculate more coefficients or are you just looking up along the reflection >>> vector? Also how are you raising the specular power when doing specular? It >>> looks good even if it's not "accurate". >>> >>> >>> >>> On 3 June 2013 04:15, Mike Wong | artixels.gmail <[email protected]>wrote: >>> >>> Hi Nukers, a short video of Escher SH tools, thanks ! >>> https://vimeo.com/67543236 >>> >>> _______________________________________________ >>> Nuke-users mailing list >>> [email protected], http://forums.thefoundry.co.uk/ >>> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >>> >>> >>> >>> _______________________________________________ >>> Nuke-users mailing list >>> [email protected], http://forums.thefoundry.co.uk/ >>> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >>> >>> >> _______________________________________________ >> Nuke-users mailing list >> [email protected] <javascript:_e({}, 'cvml', >> '[email protected]');>, http://forums.thefoundry.co.uk/ >> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >> > >
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