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All right.

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In this video, we're going to be looking at surface appearances.

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And surface appearances are a type of texture that can only be applied on something called a mesh part.

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And it basically allows us to make textures look very realistic, like they're 3D, even though they're

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only coming off of a 2D image.

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And the way they achieve that is by overlaying a bunch of images that make the illusion like the textures

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3D.

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So in order to use a surface appearance, I'm going to put a mesh part into my game here.

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So it looks just like a regular part, but this is a special mesh part.

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And since it's a mesh part, I can put a surface appearance on it.

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And now the surface appearance.

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It requires four textures.

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One is the color map and I've already uploaded a PBR texture.

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They're called this PBR texture, which has the color map.

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It has the normal map, it has a roughness map and a metallic map, basically the reflectance.

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So I'll put in the color here.

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So as you can see, the color of my texture is on my part and then I can put in something like my metallic

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map and then I can put in my normal map and then I can put in my you can already see how much better

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it's looking.

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I can put in my roughness map.

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And now, if you look at my texture here.

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It is looking quite good.

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I mean, that is a very realistic looking texture, even though it's only a 2D image, as you can see

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here, there's no depth to this at all.

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But just by looking at this texture, it looks like it has depth.

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So surface appearances are basically the tool we have in robotics to apply realistic PBR textures on

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our parts.

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Most of the time these are used by modelers who import their own meshes and they use the surface appearance

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after they have baked a texture in a software like Blender.

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They use the surface appearance to apply the texture onto their part to make it more realistic looking.

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Just using a surface appearance on a part like this isn't very common because, as you can tell, just

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like decals, they stretch along with the part.

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They're not like a texture, which is kind of unfortunate.

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So to actually make a use of surface appearance, you'd have to create your own meshes if you know how

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to do that.

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But if you don't, then I wouldn't really worry about surface appearances for now.