Vray RT & HDRI problem

[mi75]

I've only just started playing with VRay RT since I only just got my first video card capable of using RT (GTX580 3G)

I use a LWF and HDRI for most of my external lighting and I noticed that RT shows a much darker image as opposed to the production renderer.

 

I use the VrayHDRI Material and instance it into a Vray Dome light. In the VrayHDRI material settings I leave everything as standard (Mult=1, Render output=1, Gamma=1)

 

As I said it looks great in the production render but very dark in the RT render. I did read somewhere that RT does the gamma correction in reverse but how do you compensate for that? Anyone else have this problem and solve it?

 

Thanks

 

Martin

[Mario De Achadinha]

Hi Martin

 

I think the problem you are having is that RT does not do full gi in the viewport so it always will look a bit darker? Not really solution but think the only way you will get the full result is to do a small production render? What we do with RT is get the basic result for shadows and lighting then do a small render to see full gi result because its always darker in RT.

[mi75]

Thanks for the suggestion Mario. My RT images where coming out so dark it was like there was no sun, or in my case HDRI. I found the solution. It was because I had "Don't effect colors (adaption only)" turned on in the "Color mapping" settings. As soon as I turned it off the RT render was very close to the production render.

 

Mart