[SDL] [OT] Resource file
david at olofson.net
Thu Feb 21 06:40:37 PST 2008
On Thursday 21 February 2008, Andre de Leiradella wrote:
> But only pages actually accessed by the application are actually
> brought to RAM by the OS, right? Moreover, the OS will swap out
> pages to disk if the application needs physical RAM, won't it?
Yes, but physical memory isn't the problem. The application's address
space is. All you have is 4 GiB of address space, some of which is
already reserved by the system (usually 1-2 GiB, depending on OS),
and the remaining 2-3 GiB is all you have left for addressing memory,
VRAM, memory mapped files and whatnot.
Thus, in a 32 bit environment, you need to "bank switch" large files;
ie map only part of the file at a time.
//David Olofson - Programmer, Composer, Open Source Advocate
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