Re: [Alephmodular-devel] CoreGraphics work

[Br'fin <br...@ma...>]

On Jul 7, 2005, at 7:47 PM, Alexei Svitkine wrote:

>>  especially since we're trying to abstract the core away from the  
>> OS interfaces as much as possible anyway.
>>
>
> Wouldn't it better to just draw to an in-memory buffer for the  
> whole screen and then use the minimal OS calls to transfer that as  
> a whole bitmap (or parts that changed since last frame) to the  
> screen? It seems integrating it closely with the OS isn't a very  
> modular thing to do. ;)
>
> -Myrd

I admit that I have a lot of respect for whoever did the  
corresponding SDL calls in A1. They may have cribbed from SDL drawing  
methodology, but the full set of code for rasterizing lines and  
polygons and such is setup in the A1 code base. I have a lot of  
respect for whoever put them there, and don't begrudge them doing it  
either.

That said, these drawing operations are already split out from the M2  
specific code. I'm also kind of curious what some things like the map  
and terminals might look like with system provided anti-aliasing :)

On the flip side, the OS provided calls for transferring the whole  
bitmap to the screen are extremely minimal indeed.  (There seems to  
be absolutely nothing that is directly comparable to classic copybits  
for instance.)

-Jeremy Parsons
http://alephmodular.sourceforge.net/