Hi, I am trying to optimize some render settings and have some questions… Brute Force as Primary and Secondary is considerably faster than IM/ LC, and the RGB looks extremely similar. When optimizing my settings I look at the Raw GI, Raw Reflection, Raw Refraction, and Lighting.. My Raw GI is ins…

I normally stick with IM/LC myself but after some time optimizing this scene (exterior of a car lit only with dome light) I found BF/BF or even BF/LC is significantly faster and no noisier than IM/LC. BF/BF was twice as fast, and BF/LC was about 30% faster still than IM/LC. I tried upping BF GI Su…

hm.. unless 3.1 is different than on max (im a max guy) you should have a “bounces” control in your bf secondaries. its default at 3 bounces. subdivs will make almost no difference to brightness.. its the bounces that are the issue. are you sure you are looking at the “expert” interface? ive …

In Maya there isn’t an ‘expert mode’ to reveal more control, that I know of at least? I know what you are talking about as I used Vray 3 in Max before too, I haven’t seen that option in Maya and didn’t think it existed in Maya. But I don’t see anywhere to control secondary bounces for BF so maybe …

Take a look here: [image] Chaos Docs There is a “depth” option which represents the number of bounces when using brute force as a secondary GI engine. Best regards, Vlado

Hmmm BF/LC even with BF depth at 64 looks no different than BF/LC with depth at default of 3. Is there a way to get that same brightness/ intensity as IM/LC with BF/LC or BF/BF?

[image] material setting 'use irradiance map' causes big differences in render results Hmmm BF/LC even with BF depth at 64 looks no different than BF/LC with depth at default of 3. Is there a way to get that same brightness/ intensity as IM/LC with BF/LC or BF/BF? It should have worked right …

[image] Clouds R&D It should have worked right away. Best to post a scene so that we can figure out what’s wrong. Best regards, Vlado Can’t share this scene I will try and make a test one today though- so BF depth of 64 should affect brightness compared to a depth of 3?

[image] File Name Prefix Layer Override not allowed? Can’t share this scene I will try and make a test one today though- so BF depth of 64 should affect brightness compared to a depth of 3? Only if you are using BF as a secondary engine. If you are using the light cache then no. But in any cas…

So I went to make a test scene and couldn’t recreate this. I went back to my problem scene, loaded the default render preset to reset everything, and now I’m not having this problem. Perhaps I was just tired… Thanks!

Just wanted to add my own personal experience to this thread. BF/BF can actually be quite competitive in terms of speed, while producing much more reliable and consistent results (especially for animation work). But it all depends on your subject matter, format, and definition of “fast.” I’m mostly …

Brute Force Optimization questions... GI is so noisey but RGB looks fine?

V-Ray Common Common :: Render Theory

vlado August 4, 2015, 5:37pm 10

It should have worked right away. Best to post a scene so that we can figure out what’s wrong.

Best regards,
Vlado

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Brute Force Optimization questions... GI is so noisey but RGB looks fine?

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