How to make a texture in Photoshop seamless?

[kahgarak]

I've been working with PS for quite some time now, but I just can't figure out how to make textures (for use in Source engine maps) seamless. Is there a tool designed with this in mind?

feel free to rate me boxes

[Mordi]

What I usually do to make it seamless horizontally:
- Make a duplicate of the image, but keep the canvas the same size as the original image
- Place both images side by side, so that they meet in the middle of the image (the seam should be in the middle)
- Manually remove the blatant seam in the middle with brushes, clone tool, whatever.

If you then select all > copy merged, you'll have your seamless image. This process can be repeated vertically as well.

[Canary]

Filter > Other > Offset

Then use the heal tool.

[STeel]

Make sure your brightness levels are even everywhere otherwise the tiling will be very obvious even if you use the heal method

[Lilyo]

[url]http://www.photoshoptextures.com/texture-tutorials/seamless-textures.htm[/url]

[Rayne Rimsek]

Didn't Ajackss make a tutorial of how to do nice seamless textures?

[STeel]

Yeah but it's hidden somewhere in all the pages of 3D Digital art so I figure it's not too easy to find