Z-buffer

[nagboy]

Vlado,

any chance that the z-buffer will work correctly with opacity maps in the near future?

[theo]

I'll second that one ...
wonder how nobody mentioned it before.

keep up the excelent work!

regards

[digitarch]

z-buffer and opacity maps

searched the forum on the opacity maps and z-buffer problem but could not find a newer solution. Z-Buffer still doesn´t work on opacity-maps under max2009/vray150sp2

[cs2010]

It would be a great implementation ....
I'm not sure, but I think I heard about in in the forum for the next release of Vray
Did someone heard about it too ?

[DanielBrew]

I think I read somewhere that there is going to be a 'Visible to G Buffer' option in VRay properties. Not quite the same thing as is being asked for in this thread but very useful for excluding glazing from z-depth and material/object id passes.

Dan

[digitarch]

but how do you all solve the problem - using vray displacement as a clipmap instead of opacity maps?!

[cs2010]

Here is a little tutorial to solve the problem :

- Buy a candle
- Go the the Chaosgroup's chruch of the holy G-buffer
- Light the candle and pray

..... ok ok ok it's not funny

The only solution we found is using Onyxtree with a leaf size as close as possible with the leaf texture and opacity.
It's quite ok if you are far of the trees ....
I heard about the "vray displace tip" but I think it doesn't work with vrayproxies (unfortunately we use proxies for the trees ...)

If someone have an idea ....

[cs2010]

I found someting new about transparency in G-buffer
When I disable "enable filtering" in the render elements parameters, my opacity limit appears in the G-buffers, but not the full transparency ...
My english is not very good, so I attach two images to explain.
Very strange
The transparency is a grayscale picture mapped in the opacity.
I turn on affect shadow and affect alpha in the material parameter.
I'm using Vray SP2 and Max2009 64bits.
Is it a bug or something or am I doing something wrong ?

[Micha]

I stumble about this old topic and ask me, could it be fixed? I got the depth problem in the past too and if I remember me right, I reported it at the VfR bug section some months befor too. For me, this looks like a bug, not like a wish.

[vlado]

The ZDepth channel works fine with transparency in newer builds of V-Ray.

Best regards,
Vlado

[cs2010]

Hello Vlado

Thanks for your reply
I just have one more question ... is SP2 the last version of Vray or is there a SP2.005 hiden somewhere ?
My version in the "about vray" window is V-Ray Adv 1.50.SP2 (Max 2009 x64)
Do I have to download the file again on the website and all my wishes will come true ?

Thanks a lot

[Micha]

Great - thank you.

[stilgarna]

The ZDepth channel works fine with transparency in newer builds of V-Ray.

Best regards,
Vlado

Hello Vlado,

One day is it possible to add thinks like this in Z-Deph : (reflection and refraction)

http://www.puppet.tfdv.com/shaders_p/docs/p_z.html

Best regards...

[vlado]

Well, you can write your own shader for that if you feel like it; it's not too complicated either.

Best regards,
Vlado

[Klonsemann]

Yes i think so too.

Just use a distance blend as diffusecolor and the correct opacity of the original material should do this job well.