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OTOH non-integer pixels positions could slow down many allegro programs
which put/get integer pixels and blit in integer bitmap positions. May
create some caveats on lots situations too.
It would be better to create new functions to put/get non-integer
pixels and use non-integer blit, without deprecating or changing the
existing ones. Its important to note that they don't need to use
OpenGL, it's feasible and not very complex to implement they by hand
_IF_ needed for whatever reason.
Other thing which i think is that non-integer put/getpixels and
blitting would be capable to create better looking and more perfect
stretch_blit, rotate_sprite and likewise functions, which is indeed
good.
Victor Williams Stafusa da Silva
--- Elias Pschernig <elias@xxxxxxxxxx> escreveu:
> I was just going through Bob's GFX API proposal again, and noticed
> how
> it uses integer positions throughout the API. Is this something we
> want?
>
> Myself, I'm using fractional positions a lot and I wouldn't use the
> 4.3
> graphics API at all if it only supports integer. But then, my main
> plans
> of using the 4.3 API are to use OpenGL for graphics anyway - so that
> is
> not a big problem. Still, if e.g. line() and blit() would have float
> positions, then in the OpenGL drivers we will have on all platforms,
> those could directly be passed on to the underlying OpenGL, and would
> make such functions useful also for me. On the other hand, any
> drivers
> not knowing how to use the extra fractional part (e.g. our memory
> bitmaps implementation) could simply cut away the floating point
> part.
> Therefore, I propose to update the GFX API proposal with the
> following
> change:
>
> Any position parameters to drawing primitives or blitting functions
> should be converted to floating point.
>
> What do you think?
>
> --
> Elias Pschernig
>
>
>
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