Mental Ray Shadow Colour?

[Buzzoff]

The blue should be coming from the "mrSun, mrSky, mrPhysicalSky etc."

It would be like saying that the scene was red when you flood it with a red light. All the sky stuff it working like it should.

[achoury]

Hey gang,

I'm rendering an outdoor scene using Max, Mental Ray, mrSun, mrSky, mrPhysicalSky etc.

My shadows are coming out blue no matter what values I change. I can change the Tint value for both the mrSun and mrSky and that affects the lighting in the scene but the shadows are still blue!

Where does the shadow get its colour information in this setup? I just need to be able to change the shadow colour independently of the lighting in the scene similar to a standard Max light (if you know what I mean)

Many thanks for any help,

Ed

hi,
Well, in Maya you have to pipe mib_shadow_transparency or p_shadow_transparency in Shadow Shader/Shading Group/Custom Shaders of mia_material or what ever material you are using.
then you have ability to change color shadow or control color intensity or transparency independently.
so just look how to use this node mib_shadow_transparency with your material in max
hope this help

/rachid

[ShiroEd]

Thanks for the help but there is nothing like that in Max.
Max's architecture does not make use of 'nodes' the same way Maya does and therefor does not allow the user the same level of 'tweaking'.

Surely there is a solution to this?

Surely...

[achoury]

Thanks for the help but there is nothing like that in Max.
Max's architecture does not make use of 'nodes' the same way Maya does and therefor does not allow the user the same level of 'tweaking'.

Surely there is a solution to this?

Surely...

Hi
i am not max user but Mental ray is the same for all packages, if the node exist for maya it should be there for all others packages using mental ray. The only different thing is the name of the node

so: mia_material in maya and arch+design in Max
mi_transparency in maya and Shadow Transparency(base) in Max

in arch+design material scrool down to the rollut mental ray Connection=>Shadow by default this parameter is locked, so unlock and pipe Shadow Transparency(base)
then you can control what ever you want
/rachid

[ShiroEd]

Thanks for the reply achoury but that is not a solution to what I need.

Its a material based feature and not a scene global one which is both inconvenient and inconsistent.

Also (in Max) it doesn't allow full control over the colour of the shadow. If I make the shadow colour a mid gray then I still get a blue contribution from the sky. It also overrides the ray-traced shadows cast by my billboard trees and I get a solid polygon shadow. I could pipe in an opacity map into the Transparency slot to remedy that but thats a BIG inconvienience!

I need a glodal scene wide coulour adjustment to ALL the shadows cast by the mrSun without affecting the colour or tone of the 'lighting'.

My search continues!

[CGTalk Moderation]

This thread has been automatically closed as it remained inactive for 12 months. If you wish to continue the discussion, please create a new thread in the appropriate forum.