Re: [AD] acquire_bitmap weirdness

[Peter Wang <tjaden@xxxxxxxxxx>]

On 2005-12-30, Elias Pschernig <elias@xxxxxxxxxx> wrote:
> I was just trying to update a docs patch from some time ago for
> acquire_bitmap, in response to the mouse freezing thread, but I'm not
> sure if that is enough.. acquire_bitmap just seems really weird.

One reason I never bother to use it.

> c) Make the behavior sane. What I mean is shown by the example code
> sequence from allegro.cc:
...
> I would change the behavior to this:
> 
> // My proposed behavior
> acquire_bitmap(buffer_for_page_flipping);      // bitmap is locked
> clear_to_color(buffer_for_page_flipping, 0);   // bitmap is implicitly unlocked and locked
> circle(buffer_for_page_flipping, ...);         // -
> line(buffer_for_page_flipping, ...);           // -
> putpixel(buffer_for_page_flipping, ...);       // -
> release_bitmap(buffer_for_page_flipping);      // bitmap is unlocked
> 
> I.e., acquire_bitmap would be the *only* way to permanently lock a
> bitmap, and release_bitmap would be the *only* way to permanently unlock
> a bitmap.

This is the behaviour I expect as well.  I would go for c).

Peter