David,
Are you trying to run full screen?
Yes. When you say "full screen", what do you mean? My desktop environment (XFCE4) has an option to turn any window into a "full screen" without borders or window decorations. Is that what you mean? When fractaling, I like the border/decorations out of the way.
The problem is that (X)Fractint is still really a DOS program. I have put in checks of the event queue for events such as window resizing, but what ends up happening is that Fractint keeps calculating and plotting points on a surface that is being destroyed and recreated at a different size. Can't seem to get it to stop, so I went back to just using the <DEL> screen for changing video resolutions. Which, if you will recall, is far more convenient than changing resolution in xfractint before the port to SDL. If you can create a suitable entry in fractint.cfg, then it should work. To see what is available, temporarily rename fractint.cfg, then run xfractint and look at the <DEL> screen. It isn't possible to save the displayed video modes, yet.
Video mode loads fine. I set up a custom one for my 4K display. The default mandelbrot renders almost instantly.
Regardless of screen size, I get the stack smashing crash every time I go to reload a saved fractal that was created with the previous SDL XFractint version. I just opened a max-size disk video image I made a few years ago with DOS Fractint and SDL XFractint just rendered it with no problems.
I don't see this problem on my machine. I do need to work on the file access routines to get the image loaded faster.
I've compiled other applications, how does one get and compile the new XFractint source?
Try opening a subversion client and exporting from: https://svn.fractint.net/branches/ssg/sdl/ If that doesn't work, I will be creating a source code file and uploading it to fractint.net. After looking at the Make file, I see that I do need to fiddle with it to make it more generic. Jonathan