Override material in render elements

[Altravista]

Hi, I need to do a render with all material in the scene with glossiness value to 1.
Is there a possibility to do it within the render elements or i need to do an other render?

Thanks

[Zdravko.Keremidchiev]

You can use render mask to pre-render only the geometry with the glossy shaders.

[Altravista]

Thank you.