After some questioning of my original logic, another look at the disassembly revealed I’d misinterpreted a few bits and pieces wrongly. A short time later, and we get cursors without missing pixels =)
Still no alpha-blending, so the black edges are still visible and the hand isn’t see-through, but it makes it a lot easier to navigate through the mansion.
In a combination of getting my mind off of study, and giving clone2727 no reason for not posting Riven videos – see the IRC logs (at around [15:00]) for explanation – you can now see where the mouse is located in 11H (and the other GroovieV2 games).
There still needs to be a little bit of work done though. For some reason that I’m yet to determine, some pixels of the cursors are still missing (more obvious in the full-sized images).
Blending is still not supported, although how to apply the blending has been worked out. Currently I’m assuming the cursor will always be over the top of a black background, which works well when it is (like the above) but not so well for when it isn’t.
And as much as the above image doesn’t show it, they are animated although the transition between hand direction isn’t implemented yet.