Dr Andrew C Aitchison wrote:
Thanks,On Wed, 23 Oct 2002, Luugi Marsan wrote:Where can I find a simple app that uses Overlay 8+24? I can't seem to find any. What do you use to test overlay?xv -visual PseudoColor <filename> & xv -visual TrueColor <filename> &will give you two programs showing the same image, the first in the 8bit overlay, and the second in the 24bit "underlay"
I tried the xv apps and Overlay seems to work. I'm not very familiar with Overlay so I now need to go a little deeper in the code to understand the mecanism regarding our hardware. Anyone have any suggesting on where I should start with?
Luugi
When I was writing the 8+24 overlay I used kview from Richard Gooch's Karma: http://www.atnf.csiro.au/computing/software/karma/ as a test tool since I could display the image with a 24bit DirectColor visual, and manipulate the palette with a tool showing in another window, but I can't find that feature on the current version. Unfortunately although Richard had a card (not Matrox) which was capable of supporting overlay visuals, it wasn't supported by XFree86 v4. Even now I'm not sure that XFree86 supports overlay on that card :-( which means that Richard couldn't use the feature; maybe that is why I can't find it with the current version.
