Reflexion help

[gr8max]

Hi,

Who can explain if it s possible to make reflexion only on a part of a texture?

Thanx for help

[Gaieus]

Hi Greg,

What application (rendering program?) are you thinking about?
As you probably know, there is no way to have reflections in straight SU. However many rendering apps allow you to use a certain reflection map (where white is reflective and black is not and you can have all sorts of grey gradients in between).

[solo]

Reflection on certain parts of a texture is created by using reflection/specular maps. now depending on the render app you are using I can help.

[gr8max]

Hi Solo,

Sorry i forgot... i use sketchup 6 and vray 1.48.66 on xp.

I wish for exemple rendering a tile whit many reflections.
You can look in the attachment, that only on part of the texture is reflective.
I try to use 2 reflections layers differents whit another map in the "M" of reflection in vray and the rendering don't change.
voila...
a lot of apologies for my very bad english.

Thanks

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[gr8max]

Nobody can help me!!!

Why can we add some layers reflexion in vray?

Thanks

[Gaieus]

OK, so this is a V-ray specific question then. I am moving the topic into the V-ray subforum.

I myself do not use V-ray but I am sure there is a solution. Such layered materials can also be made in Kerkythea.

[thomthom]

Make a greyscale mask of where you want the reflection - white means 100% reflection, black means 0%.
Add it to the Perpendicular slot of a Fresnel map in the reflection layer.