Thanks for visiting this GIMP page. Sadly, it's massively out-of-date. It may still be interesting to you, so I haven't taken it down.
Currently my more up-to-date GIMP projects are:
Thanks for visiting!
Well, OK, why is this tip useful? It helps you add some depth to otherwise flat textures. It gives a very nice, subtle roughening that looks very much like a bumpy colored piece of paper or canvas. Note: it doesn't work on all types of source images.
Let's take an image and apply Plasma and Grayify to it:
1) Sort of a dull texture
Now let's create a bump map to use on the above image. Bump maps only work if the images are the same size, and it only takes one channel from the map image if it's RGB. Tip: to create a quick blank canvas that's the same size as your original, do a Duplicate and a Clear (Alt-D Ctrl-K). Then do an Add Noise at 20 with Gauss Lock and Gray set (you DO have the latest add noise plug-in, right? :). These numbers and settings are just rough guidelines; play around and who knows what you might come up with?
2) Sort of an even DULLER texture
Now, do a Bump Map on 1 using 2 as the texture. The result is a very nifty, very textured effect:
3) Instant stone texture, or something. Use your imagination!
2a) is 2 Enhanced at 9, then used as a bump map.
Here's the inspiration for this tip:
To: gimp-list@scam.XCF.Berkeley.EDU Subject: cool effect Date: Mon, 13 May 1996 00:36:33 -0700 From: Spencer Kimball
Sender: owner-gimp-list@XCF.Berkeley.EDU Precedence: bulk With all the cool new plug-ins, I have to confess to screwing around with the GIMP a bit instead of studying. I discovered a pretty cool effect... Start with a 512x200 RGB image. Run a plasma with default turbulence. Make a 512x200 grayscale image. Using the text tool, make a large, piece of text in the gray image. Add noise to the image (value 80). Gamma the image at 0.4 twice to darken things up. Now, from the plasma image, run "bumpmap" with the grayscale text as the mask and a depth of 4. It should kick ass. This can be extended by using the original text as a mask for compositing another texture into the final image. I uploaded a bunch of the resulting images... http://www.xcf.berkeley.edu/~gimp/cool_fx_1.html Have fun. I've got to get back to my boring class project or my partners will have fits and threaten me. Spencer