Cách làm normal map trong photoshop

When creating textures for use in a 3 chiều application or game, sometimes it’s necessary to add finer detail, such as a bump bản đồ 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 to always rely on a 3rd các buổi tiệc nhỏ 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, Photoshop.

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

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Open Texture in Photoshop

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

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Open the texture you want lớn create a bump maps for. In the 3d panel, select Mesh From Preset, and choose a shape:

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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 khổng lồ reflect options corresponding khổng lồ the material properties. Right now our texture is loaded into the Base màu sắc channel. There’s a button at the bottom labeled Normal. Click that và select Generate Normals From Base Color…

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There’s a preview of your shape, & you can adjust Contrast Details và all that fun stuff. Click OK. Your normal map is created và applied to lớn the shape.

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

Open texture in Photoshop as you would normally any image. Make sure the image mode is set khổng lồ RGB. (Having tried with Greyscale, it would freeze up again.)Choose Filter3DGenerate Normal Map…Adjust your bản đồ as necessary (I left my lớn default). Click OK.Save your file as PNG (not sure if it really matters). You’re done!

To save the bản đồ out of Photoshop, click on the Normal button again in the Properties panel, và this time select Edit Texture…

Your map will mở cửa in a separate document window. Choose File, Save As… Choose Tiff as the Format, & uncheck Layers:

Now you can use this normal map inside of a 3d application or game engine to get more detail out of textures.

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