VRayIES Troubles

V-Ray V-Ray for 3ds Max Issues
1

Hey, guys. So, I have this project to do some theatrical lighting design. Cool. ETC, who I always use for equipment, gives their photometric data. Even better. Or not.

Ok, so when I render, basically the same, scene in Blender and Max, I get two totally different results and the render settings are not different enough for this to happen, I think. I have upped the subdivs on GI on one of the scenes and not the other, but basically the same. IES light in a cube approximately the size of the theatre space, just to start and test lighting.

The VRayIES in the Max file won’t show, at all, just a black framebuffer, and the Blender IES renders ugly, but the problem is the files themselves. I have checked them all using IES Viewer.

I am including both scenes, as well as the IES files. I specifically have been trying to use the 575W profiles, since that is the equipment I will spec. I can’t get any of them to render in Max. Thank you.
FWCAC.zip (81.2 KB)
TEST_ETC-ies.zip (34.2 KB)
HPL_IES_LM_Photometrics_07.zip (983 KB)

2

Bump. Just wondering if anybody know if I’m just doing something dumb. Been working in Blender.

Thank you.

3

I’ll get one of the QA guys to look into this. Sorry for the delay.

Best regards,
Vlado

4

Hey, thanks Vlado. You guys are great and I appreciate the help.

Thank you.

5

Hello,

The max scene you shared has no material applied (the cube uses only the viewport color). Since you’re rendering inside the cube (even with two sides removed) the normals are facing outwards and that’s why the backfacing polygons are not shaded.
You can either flip the normals, assign a standard material and enable “2-sided” or use a vrayMtl (which is double-sided by default).

6

Thank you, Alex. I feel like such a rookie now. You are totally right and I appreciate it. I am very sorry for troubling you for this and I really do appreciate it.