I am making a chart of all the different logos under the File>Create>Logos submenu. The Chalk Logo doesn't seem to work. First it calls for Cooper which is not on my system. Second, even when I substitute an available font (e.g., Cooper Heavy) all I get is a black image. The layers dialog just shows a background layer and a completely empty text layer.

Should I just give up on Chalk? I have Gimp 2.6.6 on Slackware 12.2.

No, don't give up. I use Ubuntu 9.04 and my tries just produced a black image. Then I played around with the colours, got rid of the black and I got CHALK.

Norman

John Culleton writes:

I am making a chart of all the different logos under the File>Create>Logos submenu. The Chalk Logo doesn't seem to work.

I see the same thing. The problem is the Sobel filter. If you go through the steps in chalk.scm by hand, everything is fine until the point where it calls plug-in-sobel, at which point the text vanishes.

Apparently the Sobel filter in 2.6 (which is very different from the 2.4 Sobel) doesn't work on transparent layers any more -- in other words, it won't detect edges in alpha, only in colors. If you duplicate the black background layer and merge it with the white chalk layer before running Sobel, or set the background color to white and then remove alpha on the text layer, it works. I don't know whether that change to Sobel was intentional.

I've filed a bug: http://bugzilla.gnome.org/show_bug.cgi?id=590418

...Akkana