Re: [AD] No more video/system bitmaps

[Elias Pschernig <elias@xxxxxxxxxx>]

On Tue, 2005-06-21 at 20:20 +0100, Peter Hull wrote:
> On Tuesday, June 21, 2005, at 07:25  pm, Elias Pschernig wrote:
> 
> >
> > And yes, just using select_bitmap instead of having
> > additional context objects sounds better to me.
> 
> Simpler is better, I agree. One thing that has been discussed, is 
> giving allegro hints as to whether it should move a bitmap to VRAM or 
> not. My thought for the context is that Allegro would know that any 
> bitmap with an open context should stay in system RAM. That's what the 

But why? I would very much like Allegro to handle drawing to textures.
SDL supports it, and doing it manually with pbuffers or whatever is
quite hard.. so if possible (i don't know if it is), Allegro should do
this for you. Such a bitmap shouldn't be kept in system RAM I guess, it
should be a texture (well, and OpenGL then decides where it keeps it, I
guess).

> flush_context was for - to update it but keep it pinned in main memory. 
> Have you any thoughts on how that could be achieved in the 
> select_bitmap system? Presumably the selected bitmap wouldn't be moved, 
> but when the screen is selected, it might. There could be an explicit 
> function, or maybe Allegro could move bitmaps automatically that have 
> been blitted 'recently', but not blitted to.
> 

-- 
Elias Pschernig