| Re: [AD] Using memmove in blit()? |
[ Thread Index |
Date Index
| More lists.liballeg.org/allegro-developers Archives
]
On Sun, Jan 22, 2006 at 05:20:25PM +0100, Evert Glebbeek wrote:
> A few times I've heard the claim that memmove() (or memcpy) will be faster
> than Allegro's current blitter.
> I've tested that with the attached patch and it doesn't appear to make much
> of a difference at all (note that I cannot use memmove() in
> _linear_blit_backward, despite memmove supposedly working properly if
> memory areas overlap).
On the ARM architecture (GP2X), memcpy is about a million times faster
than Allegro's normal blit (ok, maybe only about 2 times faster...).
This is for screen-to-screen blitting, which is just a normal linear
bitmap but in uncached memory, and accessed through mmapping.
George