Path Tracer Indirect Sunlight

[Roy Hirshkowitz]

Making some progress here.  Old and new algorithms at about 2 hrs.

[Roy Hirshkowitz]

Here's what the sunlight channel looks like when isolated, old and new:

[Jorge Javier Lara Domínguez]

Wow... cuando podremos contar con esto en nuestros equipos?

[Wayne Williamson]

Very impressive, will lighting be effected by this algorithm? Will it work in a mixed lighting environment?

[Roy Hirshkowitz]

This example has a very small, very bright, patch of sunlight on the floor and the window sill.  The stuff I'm working on right now should handle these sorts of scenes much better.  Other scenes, such as those with a lot of direct sunlight, will not show such dramatic improvements.  Non-daylit scenes and exteriors will be largely unaffected.

I am taking a fresh look at skylight for interiors.  I may be able to improve this a little (not as dramatically, I don't think.)

[Peter Milner]

This will make a massive difference to me.

Thanks Roy.

[Roy Hirshkowitz]

It may-- I'm going to try it next with a few of your examples...

[akinlolu olugboji]

Indirect is definitely, handled better as seen from underneath the bed and between the curtains and the wall. How many passes is this? 

[Roy Hirshkowitz]

546 for the new, 693 for the old.  I wouldn't bother comparing them that way though-- both cooked for just over 2 hrs. @ 640 x 480 on my 12 core machine.

[Ros. Riha]

great improvement...thanks, Roy.

When could we expect this to be released?

[George Ioannidis]

Ahoj Rosťo. To je jak se říká nebe a dudy. Mám dojem, že jsme na správném vlaku :D

Really impressive performance leap Roy. Great work! Any progress on Intellicad branch of nXt?

[Roy Hirshkowitz]

Careful.  This is only a performance "leap" for a few scenes.  Many scenes will benefit only marginally or not at all.

[George Ioannidis]

OK. I welcome any improvement Roy, please don't condemn my enthusiasm :D