RE: [AD] sub bitmap patch

["Vincent Penquerc'h" <Vincent.Penquerch@xxxxxxxxxx>]

Title: RE: [AD] sub bitmap patch

> form the create_sub_bitmap description in allegro.txt:
>      screen, the x position must be a multiple of four. The sub-bitmap
>      width and height can extend beyond the right and bottom edges of
>      the parent (they will be clipped), but the origin point must lie
>                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>      within the parent region.
>      ^^^^^^^^^^^^^^^^^^^^^^^^^
>
> While removing this restriction is quite useful, I don't
> think this counts as
> a bug, and hence must wait till after 4.0.

Fair enough. I'll add it to my ever growing collection of personal
Allegro patches then :)
However, the code does do something if the origin point does not lie
within the parent region, but does the wrong thing. So I guess the
behavior is actually undefined :)

--
Vincent Penquerc'h