Hi, I have some questions about this option on materials : 1) If i disable this option, my material will use brute force. Where can i set subdivs of my brute force if i use irradiance map ? 2) Workflow : - renderLayer1 : i have a static geometry. I bake one irradiance map for my static geometry,…

[image] Material test scene 1) If i disable this option, my material will use brute force. Where can i set subdivs of my brute force if i use irradiance map ? The hemispheric subdivs of the irradiance map are used. The problem : the GI of my characters is not on my static geometry, but the G…

[image] Vray Fastsss2 material challenge Yes, but since you normally compute these in two separate passes, it is not a problem to change the value in between. Best regards, Vlado When you say : “you normally compute these in two separate passes”, you want to say : 1) I render my static geom…

Hm, but it doesn’t make much sense to do that in one pass - you might still get flickering on the static geometry especially if the camera moves; plus, you will be recomputing the same thing over and over again. Best regard, Vlado

Vlado, what about having an option on geometry to generate only brute force gi even if irmap is used. For his scene, he can just enable this option and run his irmap for the render, but the moving geometry which will have this enabled will not get any irmap gi and not cast and irmap gi, and instead …

The problem is not on the moving geometry, but on the static geometry that has contact shadows/color bleeding from moving objects. If we need to brute force those objects too, then I’m not sure what’s the point of the whole exercise. Best regards, Vlado

In my experience you’d want to render the characters separate from the BG and cheat the GI contact points of the char/BG with an AO pass as was suggested. It’s good to have those split out and controllable from the rest of the GI anyways, and will be a more economic render in the long run… cheers

Essentially what I am suggesting is the sphere fade volume effect (like in that tutorial you wrote on spot3d.) but as one pass/option rather then few separate layers. I realize that tracing true gi rays from moving geometry is not possible to achieve in as fast as irradiance map way but if you woul…

How to use properly "use irradiance map" in materials ?

V-Ray V-Ray for Maya V-Ray for Maya :: General

bigbossfr June 5, 2013, 1:48pm 3

It is possible to separate the subdivs of the brute force and the irradiance map ?
Because if i set my subdivs of my IR to 120, i will set my subdivs of my BF (on characters) to 120 also ?

It will be great if we can solve this. It will be a very great workflow.

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How to use properly "use irradiance map" in materials ?

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