Cách làm normal map trong photoshop

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When creating textures for use in a 3 chiều application or game, sometimes it’s necessary to lớn add finer detail, such as a bump maps or normal map. Normal maps kém chất lượng the lighting on textures lớn create additional detail, without adding more polygons.

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For normals, I figured you had khổng lồ always rely on a 3rd buổi tiệc ngọt application such as CrazyBump. While CrazyBump is a great piece of software, I hadn’t realized it was already possible using the popular photo-editing software, Photocửa hàng.

Please Note: The 3 chiều functionality is not available in Photosiêu thị versions CS6 và prior, & therefore will be unable to lớn create normal maps.

Open Texture in Photoshop

For this example, I’ll use a leather texture found on textures.com:

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mở cửa Photosiêu thị and switch to the 3D Workspace:

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mở cửa the texture you want to lớn create a bump bản đồ for. In the 3D panel, select Mesh From Preset, & choose a shape:

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I like to lớn use a Sphere, but it doesn’t really matter. Cliông chồng Create. Some kind of magic happens inside Photosiêu thị & it creates a scene with your texture loaded onto lớn an object.

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In the 3 chiều panel, you’ll see an object name with _Material. Click that:

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Create the Normal Map

The Properties panel changes lớn reflect options corresponding khổng lồ the material properties. Right now our texture is loaded inkhổng lồ the Base Color channel. There’s a button at the bottom labeled Normal. Cliông chồng that và select Generate Normals From Base Color…

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After a few seconds, the Generate Normal Map window opens:

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There’s a pĐánh Giá of your shape, and you can adjust Contrast Details và all that fun stuff. Cliông chồng OK. Your normal bản đồ is created and applied khổng lồ the shape.

Note: If Photoshop locks up, you can also try this simpler method:

mở cửa texture in Photoshop as you would normally any image. Make sure the image mode is mix to lớn RGB. (Having tried with Greyscale, it would freeze up again.)Choose Filter3DGenerate Normal Map…Adjust your map as necessary (I left my lớn default). Click OK.

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Save sầu your tệp tin as PNG (not sure if it really matters). You’re done!

To save sầu the bản đồ out of Photosiêu thị, clichồng on the Normal button again in the Properties panel, and this time select Edit Texture…

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Your bản đồ will open in a separate document window. Choose File, Save sầu As… Choose Tiff as the Format, and uncheck Layers:

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On the TIFF Options dialog, just keep everything as default:

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Now you can use this normal maps inside of a 3 chiều application or game engine khổng lồ get more detail out of textures.

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As you can see in the example below, a normal bản đồ can add much more realistic lighting detail on the surface of your mesh.


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