No GI shadows on my Matte plane

[Metin_7]

Hi,

I'm rendering a scene using only a HDRI environment bitmap, no scene lights. The scene consists of some objects placed on a plane with a V-Ray material and the matte option on in the object settings, alpha set to -1.0, affect shadows on, etc., just like it should be. The setup worked fine with V-Ray 1.09, but I don't get any shadows on my matte plane anymore using the latest V-Ray beta version. How come?

At first I thought maybe the Light Cache washed out the shadows, but in the preview all shadows look fine. I read in the manual though that the preview doesn't show the matte yet.

Thanks and cheers,

Metin

[jacksc02]

Metin,
I am just rendering the same thing, make sure you have shadows checked in the direct light option in the vray properties

[Metin_7]

Hi Chris,

Do you mean in the direct light section of the matte properties? I've got shadows checked there, but with no result. As I said: the exact same setup worked just as it should in V-Ray 1.09.

Cheers,

Metin

[jacksc02]

yes thats where i mean........
I will try to do another test

[Metin_7]

Thanks man. It's pretty late out here and I'm wrestling with this for a few hours already now.

Cheers,

Metin

[jacksc02]

do you have a scene i can test?

email if you want, or msn c_jackson1999@hotmail.com

[Metin_7]

By the way, primary GI is Irradiance and secondary GI is Light cache, might be useful for your test. Default lights are off, only HDRI lighting from environment override.

Cheers,

Metin

[Metin_7]

I'll send you the scene in a moment.

Thanks and cheers,

Metin

[priad]

Hi, I don't understand your problem!
You can't have shadows on a matte plane with hdri lighting?
like this?
http://nicenoise.free.fr//collecthdri.rar

[RErender]

Do you have a vray dome light by any chance?

edit: Oh I see you don't

[Metin_7]

Hi guys,

The facts in a row:

1: Create a scene with a few objects on a standard Max plane.
2: VRayMaterials on everything, near white VRayMaterial on the plane.
3: Set plane to matte in object properties, switching on shadows and affect alpha, setting alpha to -1.0.
4: Put dynamic HDRI bitmap in environment override (both lighting and reflection). I used one of the HDRI-Studio lighting setup bitmaps.
5: Set background to white.
6: Render with latest beta, settings: GI 1 = irradiance, GI 2 = light cache, fairly high quality settings for both.
7: Shadows are apparent in prepass, but disappear in final render.

Cheers,

Metin

[flipside]

Hey metin, it works perfectly here!

[Metin_7]

Hey guys,

I think I've trapped the problem: try the same scene approach, but switch to Delone Triangulation! Other methods turn out to work fine indeed, but Delone seems to eat matte shadows.

Cheers,

Metin