Reflect alpha doesn't work with vray 3.00.07

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

I have a problem with the vray version 3.00.07 for 3dsmax 2015 64bits
when I check the matte object affect alpha and alpha contribution -1.0 in vray propertie option of my object the apha reflection is black but with the version 2.40.03 i see the alpha reflection of the object.
Is that something has changed?

thanks for your answer

2

Hi,

We are working to fix this for the 3.x builds. As soon as we have any update will post here.

3

Is there any fix for this in the nightlies builds?..This have become a severe problem in our organization and going back to Vray 2 to is going to cause problems since our pipeline is now standardized on Vray 3

Please have a fix for this ASAP!

Thank you!

4

It is not fixed yet - we are working on that regard.

5

This issue will be fixed for the upcoming Stable nightly 3.x build.

6

is this in the nightly builds yet?

7

Just tested the latest stable nightly build…it still broken…it kind of works but there some issues using a VrayMtlWrapper for Matte shadow and reflection with fresnel reflections.

*Update*

Seems to be broken without fresnel reflections too…Just random results when adjusting the reflection and diffuse color for the floor.

8

The fix is not in the stable builds yet. Will merge it today so that it can be included tomorrow.

Best regards,
Vlado

9

yet Multi/SubObject Mtl

Reflection of MatteObject will be ignored if Reflection Mtl is included in Multi/SubObject Mtl.

test scene
oak2012.zip (23.8 KB)

10

Thanks for the feedback - we’ll add this bug into our system and let you know when we have it fixed.

11

Hi Vlado,

Unfortunately there is something still broken with the latest stable build…The LC calculation and rendering time goes through the roof!. I have sent a scene to support…I have a VrayMtlWrapper for Matte shadow and reflection on the V-ray floor plane.

**update**

Seems to be related to using the V-ray floor plane

Ticket number #173656.

12

I can’t see the scene in the ticket right now - will get it tomorrow from the support guys and will let you know how it goes.

Best regards,
Vlado

13

Thanks for the scene; this is fixed for the next nightly/stable tomorrow.

Best regards,
Vlado

14

Now I think catch shadow is not working…I cant only catch shadow now.

15

Hi,

Would it be possible to attach a simple scene for this issue and the exact V-Ray build that you are using ?

16

Basically I’m trying to separate Shadows from reflection as described in the Tutorial bellow. I’m trying to use the VRayExtraTex for the reflection alpha to be separate from the main alpha…so far no luck.

MintViz is the owner and author of this content. Please click the following link to be redirected. http://www.workshop.mintviz.com/tutorials/matte-shadow-and-reflection-using-v-ray-2-0/#ixzz39XeajJht
Under Creative Commons License: Attribution Non-Commercial

17

Hi,

Since the V-Ray Wrapper has the ability to catch the reflections, the alpha channel contains information for both, shadows and reflections.
If you need to use them separately, the render should be on 2 passes (second region render for the matte surface only).
*) one with disabled reflection for the material used with V-Ray Wrapper shader to get only shadows
*) second with reflective material and ExtraTex (with Dirt map) render element to get the reflections

18

Actually there is another approach for this, here is example screenshot of the result and option that i have used:

2014-08-06 092433.jpg
2014-08-06 092433.jpg1446×916 162 KB

19

Just my 2 cents,

I ran into the issue today, and just lost 2h because I couldn’t find out why it wasn’t working.
I hope this will be fixed soon, please let us know when this is working again.

Cheers

Stan

20

I think it’s fixed in the nightly builds already; I have to check the stable ones.

Best regards,
Vlado