# Re: clipping

- From: Geert Uytterhoeven \<geert@linux-m68k.org\>
- Date: 2003-01-07 21:09:37 
- List: linux-fbdev
- Page: https://ratatoskr.run/linux-fbdev/2003/01/13450692
- Thread: https://ratatoskr.run/linux-fbdev/2002/12/13450664/t.md

```text
On 3 Jan 2003, Antonino Daplas wrote:
> On Mon, 2002-12-30 at 05:21, Geert Uytterhoeven wrote:
> > cfb_imageblit() takes care of clipping, but forgets to update fb_image.data if
> > fb_image.d[xy] was changed.
> > 
> > BTW, do we really need clipping in fb_ops.fb_{fillrect,copyarea,imageblit}()?
> Personally, I don't think we need clipping.  I tried removing it before
> (circa linux-2.5.30+), but the console segfaults whenever I decrease
> var->yres_virtual.  I haven't tried this again with the newest
> framebuffer framework though.

Any definitive answer on this?

What happens if you resize the VT to such a large size that columns*fontwidth >
xres_virtual or rows*fontheight > yres_virtual? I guess clipping prevents a
crash there?

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds



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