Re: [RFC] Does fbdev need a cursor API for userland?

["Antonino A. Daplas" <adaplas@hotpop.com>]

On Monday 18 October 2004 17:35, Geert Uytterhoeven wrote:
> On Mon, 18 Oct 2004, Antonino A. Daplas wrote:
> > The restore_fb_contents/save_fb_contents cannot be done generically.  Not
> > all framebuffers have a linear format, there are some that are planar
> > such as amifb and vga16fb.  This means that we need to add per-driver
> > hooks just to save and restore the framebuffer contents.
>
> Can't we use fb_imageblit() for restore? 

fb_imageblit() is limited because it uses the pseudo_palette.  Even if
we expand the palette to 256 entries, it won't be able to handle formats >
8bpp. More than 256 is not practical. Plus, fb_imageblit is limited to
1->bpp, and 8->bpp expansion.

> Then al we need to add is a get_image() routine.

I guess if we can add get_image(), it's simple enough to write a
corresponding set_image().  Your amifb is one driver that's going to
be affected, so if you say 'yes' to the above, then let's go for a 
universal cursor implementation.

Tony




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