I have been doing some tests with using only a HDRI image of an exterior environment for a light source when rendering an interior room. The room is fully finished with walls, ceiling and windows. The results are very splotchy and noisey. It is as if the HDRI doesn’t not produce enough light. From w…

Pretty much all of Peter Guthrie and Bertand benoit’s work are using this as far as I know?

Hmm I will check them out but from memory I thought they use a combination of hdri and direct lighting for interiors. Not just hdri alone.

When you are using hdr, what is the hdr from? is it used as regular environment? does your walls/interior objects block the hdr from environment?

I’ve tried with HDRI only with the same results. I was able to subdivide enough to get a clean render, but the render times were too high. So I added a sun, and all the problems went away. So that got me thinking… is it the lack of any other light source causing this? So I added an ambient light…

[image] VrayMultiSubTex = make enumerable I’ve tried with HDRI only with the same results. I was able to subdivide enough to get a clean render, but the render times were too high. So I added a sun, and all the problems went away. So that got me thinking… is it the lack of any other light sour…

Thanks for the input guys. I typically use something from Peter’s collection such as http://3docean.net/item/hdri-1103-sun-clouds/88774?WT.ac=search\_item&WT.seg\_1=search\_item&WT.z\_author=paguthrie . I would have thought that this HDRI would give enough illumination for interior with closed walls. …

or LOWER the gamma of the hdri to something like 0.5

[image] test scene or LOWER the gamma of the hdri to something like 0.5 You could do this but it does alter your lighting. You end up in an ever frustrating spiral of fixing one issue to satisfy another.

[image] On another topic What would be the point of illuminating an interior with env hdr anyway? You’re totally right of course, sometimes I just do things to see if I can.

[image] Ivy Genertor You’re totally right of course, sometimes I just do things to see if I can. its quite simple really, the hdr dome is so big, that the samples shot from the interior through the window really hit just single pixels of the hdr, which is why it takes so long to get anything c…

HDRI interior

V-Ray V-Ray for 3ds Max General

system July 12, 2012, 7:30am 12

Same here for me. To be able to illuminate an interior with just a single HDRI map would be so much faster.

Charging for render nodes

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HDRI interior

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