Re: Video memory (Was: Re: GGIMesa updates)

[Jon M. Taylor]

On Sat, 4 Nov 2000, Lee Brown wrote:

> >what is the support for offscreen video memory allocation ?
> >I'm not sure I use the correct terminology, so here is what
> >I have in mind:
> 
> Why can't we just let the client (Stefan) draw to the offscreen part
> of the framebuffer?  

        There may not always BE an offscreen part of the framebuffer on
all targets.  In particular, the targets which do not support one or more
DirectBuffer mappings cannot use this method.

> I wrote a little demo (with minor changes to the fbdev
> code) program that allowed me to draw offscreen (outside of the virtual area)
> and then use ggiCopyBox to blit it to the viewable (virtual/pannable) area when
> needed. What am I missing here?

        Did you try it on all targets?  

Jon 

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