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[directfb-dev] Re: blanking of non-refreshing windows
On Tue, 2003-09-09 at 18:31, Denis Oliver Kropp wrote: > Quoting Torgeir Veimo: > > On Tue, 2003-09-09 at 17:07, Denis Oliver Kropp wrote: > > > Quoting Michel Dänzer (firstname.lastname@example.org): > > > > On Thu, 2003-08-21 at 23:12, Andy Isaacson wrote: > > > > > In general I want the system to work correctly an in a performant > > > > > manner even if the number of windows exceeds available off-screen > > > > > framebuffer memory. > > > > > > > > It would be interesting how it performs in that case indeed; I don't > > > > expect it to be too bad though as it was quite usable even without any > > > > hardware acceleration. > > > > > > The surface manager of DirectFB kicks out older window surfaces if > > > no free space is available. Only if many windows overlap while > > > being transparent, it could slow down noticably, because all windows > > > are needed to recompose the stack. But with a 32MB card I have space > > > for many windows ;) > > > > Can you DMA them to main memory using run length compression? > > They could be blitted to AGP memory, once DirectFB supports different > memory pools. An abstract management of memory which can be read/written > by CPU and/or GPU with support for dynamic physical allocation is a very > interesting and important TODO. This should include all kinds of UMAs, > GARTs etc. > > I don't think that RLE is supported, neither on storage, nor on transfer. Alan seems to think so, http://www.xfree86.org/pipermail/forum/2003-July/001732.html -- Torgeir Veimo <email@example.com> -- Info: To unsubscribe send a mail to firstname.lastname@example.org with "unsubscribe directfb-dev" as subject.