Irradiance vs Brute Force

[eyepiz]

actually I did a test with progressive and it reached 0.006 noise thresh in about 7 minutes, which is faster then dmc...

Weird...I got the opposite with BF/LC progressive in my example. 2hr 37min. I didn't even bother posting that one since it was the slowest of all the renders.

[Morbid Angel]

no my test was with irmap in that case. let me see how long it takes with bf

[Morbid Angel]

So it took 10 minutes with progressive at 1/100 and noise of 0.006 and the image still looks pretty grainy with bf, so that kinda makes sense.

[Morbid Angel]

@Morbid Angel, I tried your scene, took forever to render on a 3930k, seems to be the displacement slowing it down from the carpet tremendously. I wanted to just test it in Vray RT with BR, LC. rendered of course really fast at 1min30sec. But i have some really weird shading at room edges and ceiling, like it has bad AO turned on or something. never seen this before.

So I get the same dark edges around the corners of the image when using RT even in gpu.

[Donfarese]

So I get the same dark edges around the corners of the image when using RT even in gpu.

I think it has something to do with the geometry of the walls, I don't have that in any of my other scenes. Maybe I'll try rebuilding those walls

[Donfarese]

Found it, it's the light setup, the rectangle light. Might have some custom settings you put not supported with RT or might just be a bug. Also I do not think your need the portal lights, especially with BF.