HDRI created with terragen

[powerandrubber]

Has anyone had any luck with hdris created in terragen? They look great in HDRI Shop and in the mat editor, but when used for lighting...

[Dynedain]

I've had other HDRI's (namely Debevec's daylight sequence) do that as well. It appears to be from the probe having too much range, so the samples get to be too varied. I had some success in switching to QMC for my GI calcs, but ultimately what worked best for me was just using a different probe.

Also make sure you are using the right mapping type for the probe. If it's a cylidrical image, you should use HDRIshop to covert it to angular, then use the VRay HDRIMap to bring it into max.

[powerandrubber]

I have the right maping type for the probe. Splutterfish's hdri loader gives much better results although the light is coming from the wrong direction and I can't seem to change it.

[powerandrubber]

Do'h! Default max lighting.

[analogueWay]

I ran into that problem with Debevec's sky probe. I believe it is due to a single, very bright spot (the sun) and too few samples. I got around it by using a smaller, blurred version for my skylight while sticking with the full res version for reflection and background.

-Jeremy

[powerandrubber]

For anyone interested I found that the vray hdri loader works with terragen hdris if you use the raw cubic hdri from cube2cross. Before I was converting the cubic hdris to spherical with hdrshop which seems to be the source of the problem.