Press F10 > Assign Renderer > Production > Vray as default render engine,
Press M to open material editor,
Select an empty slot,
Press “Standard” > VrayLightMtl (Left top “Browse from” must be selected New)
Press “None” button in line of Color, Select “Vray Dirt”
Make your settings like “radius, distribution, falloff”
Select all objects in your scene (CTRL+A) and assign material to your all objects
Render!
That’s all folks,
Keep in Fx,
Caner ATAS