Unity-2d on PowerPC

**pauljwells** · May 5th, 2011

There is a graphics bug (arguably) in Qt4 that makes the unity-2d interface colours look all wrong on PowerPC.

I have written a kludged fix for this, which is now being studied by the Devs and will no doubt be included in a future update.

If anyone wants to try my kludge it's pretty straightforward just following these instructions:

http://www.cyberciti.biz/faq/rebuild...inary-package/

The source package is unity-2d

After the dpkg-source -x step, edit (as root) the file iconimageprovider.cpp (found in /launcher/UnityApplications)

Find the lines

Code:

    QImage swappedImage = image.rgbSwapped();
    g_object_unref(pixbuf);

near the end of the file and paste the following code between them

Code:

    /* Start of PJW Kludge*/
    int imageheight = swappedImage.height();
    int imagewidth = swappedImage.width();
    QRgb pixcolour;
    int pixalpha, pixred, pixgreen, pixblue;
    for (int x = 0; x < imagewidth; x++)
    {
        for (int y = 0; y < imageheight; y++)
        {
        pixcolour = swappedImage.pixel(x, y);
        pixalpha = qAlpha(pixcolour);
        pixred = qRed(pixcolour);
        pixgreen = qGreen(pixcolour);
        pixblue = qBlue(pixcolour);
        pixcolour = qRgba(pixalpha, pixblue, pixgreen, pixred);
        swappedImage.setPixel(x, y, pixcolour);
        }
    }
    /* End of PJW Kludge*/

Then continue with the rest of the compilation. You end up with a bunch of .deb files in the build directory that you install with

Code: