Xrender cursor performance / double buffering?

Jim Gettys jg at laptop.org
Tue Apr 17 11:56:03 EDT 2007

Heh.  More and more cursors are images these days, rather than two
plane.  The question is if we hit the hardware alpha blending unit for
cursors or not.  I'd suspect not, but profiling would provide the answer
if you don't know instantly...
                                - Jim

On Tue, 2007-04-17 at 08:47 -0600, Jordan Crouse wrote:
> On 17/04/07 16:25 +0200, Bert Freudenberg wrote:
> > XO is not using the HW cursor anyway because, as you point out, that  
> > only supports 2 bit cursors (1 bit black/white, 1 bit alpha).
> So I'm confused.  You know that the hardware can only do two bit cursors.
> Yet you are ignoring that, and purposely taking a performance hit so
> you can have a more colorful cursor.  Why?
> Jordan
Jim Gettys
One Laptop Per Child

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