Re: [PATCH 0/4] Cursor's update inside kernel only

[Rémi C. <re...@ge...>]

Le 16/01/2009 21:21, Jesse Barnes a écrit :
> On Monday, January 5, 2009 12:55 pm Tiago Vignatti wrote:
>> Right now a thing that is annoying me is how others cursors, sw rendered,
>> could be implemented. I want to avoid two differents sets of the same code
>> in different contexts. IMHO conceptually all these cursor update things
>> must be in-kernel. Painting a cursor image seems to be quite hard as we
>> have to save/restore areas under the cursor. I remember that anholt had an
>> idea concerning this, but I do not remember details.
>
> I really like the idea of having this in the kernel for latency reasons, but
> yeah we do need to solve the sw case as well as implementing some
> acceleration code.  OTOH it might be reasonable to push the problem of
> multiple, large, and or funky format cursors out to userspace, since those
> are relatively uncommon (64x64 32 bit ARGB ought to be enough for everybody
> right? :).

Not for firefox. Any drag&drop in gecko will result in huge ARGB 
cursors. Even just dragging and dropping a tab results in a cursor 
that's at least 150x20px.

Cheers

Rémi