Commit e05439da authored by 24.128.162.11's avatar 24.128.162.11
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......@@ -12,7 +12,7 @@ First lets review:
The graphics system in a laptop has a gpu with some memory, in the case of an IGP, this memory may be a piece of system memory, but otherwise it is usually dedicated memory living on the GPU. This GPU connects to a laptop display, or output port.
The first problem is that we do not currently have a way to a priori know what outputs (displays) are connected to what GPU's.
Secondly the optimus software might perform the task of switching between the which of the two graphics processors drive your display by directly flipping a hardware switch, called a mux ([[http://en.wikipedia.org/wiki/Multiplexer|multiplexer]].
Secondly the optimus software might perform the task of switching between the which of the two graphics processors drive your display by directly flipping a hardware switch, called a mux ([[http://en.wikipedia.org/wiki/Multiplexer|multiplexer]]).
If it does not exist, then there is no mux and thus no physical way to perform this switching. Thus Optimus is used to effectively "implement" a software mux, that is ensure that relevant data is processed on the right GPU and copied to the device that displays the image.
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