How to make white ground

[kostenurka]

Hi,

I want to achieve absolute white ground for my scene (using dome light with hdr & sun and physical camera). Up to now I always get some color on my plane (due to the GI of course). I'm using basic white material, after some alpha channels and photoshoping I get what I want but wondering if you know some solution already?

Probably there is a material setup which can lock the ground as white without gradient preferably

thanks in advance

[fooprobe]

make it emissive

[kostenurka]

Thanks but this is not a solution for me. I have anyway my way for getting it just wondered if someone apply interesting method.

make it emissive

[Micha_cg]

Enable material based GI env for the ground material, for example a simple white acolor and set it the intensity until the ground looks white. So you should get a nice clean white ground with soft shadow.

[kostenurka]

thanks micha,

unfortunately I don't get it. I set up to 100 intensity and my ground does not get whiter at all. Did you try this when using dome light? I suspect the dome light plays role here

Enable material based GI env for the ground material, for example a simple white acolor and set it the intensity until the ground looks white. So you should get a nice clean white ground with soft shadow.

[Micha_cg]

That's a pity. Maybe it should work and it's a bug only. Any 3dsmax user read here?

[svetlozar.draganov]

The trick with GI override is not working if DomeLight is used.
GI override in the material - override GI in the Environment tab , but not the DomeLight.
The effect can be achieved without DomeLight since you are able to place the HDR map into the GI Environment slot - and then Material GI override will work - here is one example.



http://dl.dropbox.com/u/45398240/Cha...ite_Ground.zip

[Micha_cg]

And in the future, if a 1.5 bug is fixed, than you should be able to set the multiplier for a white acolor to a value above 1 and push the white where you want. (1.05 I used often)

[kostenurka]

Exactly what I suspected - conflict with the dome light
Would it be this considered like a bug or dome light should be useless in such cases?

thank you

[svetlozar.draganov]

I don't think that this is a bug , just the Dome light is developed to override everything - you can make in invisible but it still overrides GI map in the material editor.
I can add a feature request about making possible to change the override priorities - but I guess in other situations the exact opposite override priorities will be needed, and I don't think it is possible to develop overrides that the user can change on the fly.

[kostenurka]

Dome light has been the most promoted feature for vray 1.5
In my opinion it is logical if works with all settings can be found in material editor (otherwise dome light will be not fully compatible). It will be really great if we have little freedom to tweak some materials indigently.

Sometimes client or boss does not want to know that the perfect global illumination for the scene does not allow to get the bit of white somewhere exactly white for instance

[fpedrogo]

As Svetlozar said the Dome light override everything. But if you want to get the advantage of the dome light illumination and be able to override reflection, refraction, GI and Background per material you can use the following workaround.
Steps
1. In the dome light disable the "Affect Specular" and "Affect reflection" - this will allows you to use the HDRI on the dome light to produce the illumination, but it will not affect the reflection.
2. Go to the environment and use the same HDRI on the Background or on the Reflection and refraction. This depend of what you want to do. If you don't want to see the HDRI on the Background then just override the reflection and the refraction. This will allows you to have the HDRI to control the reflection and the refraction globally.
3. Now you can override the GI, BG, reflection and or refraction per materials.

Best

[kostenurka]

Will try it out
Thank you!