[Bf-cycles] Clamping just secondary rays

Marco G digitalbath86 at hotmail.com
Sun Feb 9 18:06:59 CET 2014

That could be even better and more flexible. IMHO this could also help hair rendering with Hair BSDF potentially,since it involves reflections, it gives fireflies quite easily, thus having this indirect clamping could preservehairs direct highlights and get rid of bright pixels from indirect.
One of the most fireflies-prone setup is tiny radius spot-point lights lighting sharp glossy.I've made a super simple scene (in the link) showing this, using MIS and/or filter glossy doesn't help,the only thing helping is clamp but then we loose the whole tone range.
Link to the scene - http://www.pasteall.org/blend/26752
Thanks. MG
> From: brechtvanlommel at pandora.be
> Date: Wed, 5 Feb 2014 17:03:46 +0100
> To: bf-cycles at blender.org
> Subject: Re: [Bf-cycles] Clamping just secondary rays
> Yes, I can see that would be useful. We could split up the clamp
> option in direct and indirect parts so you can still clamp direct as
> well but less.
> Brecht.
> On Wed, Feb 5, 2014 at 12:05 PM, Marco G <digitalbath86 at hotmail.com> wrote:
> > Hi all,
> > i was wondering if current clamp option is affecting every ray (also direct
> > ones), and maybe it could be made to affect just secondary rays to clamp
> > fireflies from glossy bounces etc, while preserving direct
> > highlights/reflections on shiny objects. Makes sense?
> >
> > Regards, MG
> >
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