Im going to use this Laminate wood material here. Now lets overlay this on top of another material.īefore we do that, Im going to rename the material we just created as Overlay Now Im going to choose a material from the library to use. Anything thats white is visible, and everything thats black is invisible. As you can see, since we are using the texture as the opacity map. There you go! now we can see the texture in the viewport and we can know what it looks like when we zoom in. Its still hard to see because we dont know how much to zoom in. You can see that nothing is happening, thats because the material is too small and the camera is too far away so lets zoom in a little closer.
#Render mask vray 3.6 free
For this, I will use one of David Gruwiers free samples. Here you will see that its all white so lets go down to Opacity, and add the surface imperfections map. Now Im going to create a 25 by 25 square and apply this material to the surface and start the interactive render. Next, Ill set the diffuse color to white. Go to the material tab and click here to Create a Material. Once youve downloaded the maps, lets start Sketchup and open up the Asset editor. David Gruwier also has a collection of maps with free samples that you can find on his website : You can find these maps on, which is a premium website for textures but there are some free textures as well. So how do you add surface imperfections to a material? First you need a special texture map called a surface imperfections map, which is a black and white map that represents imperfections like stains, scratches, fingerprints, etc.
Thats why its good to add some surface imperfections to the materials in your model. So when the objects in your renderings look too clean or too perfect, it will look a little unrealistic. If you look at the objects in the real world, you can see that their surfaces always have some types of imperfections like dirt, scratches, or even fingerprints. Use surface imperfections – increase photorealism
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