23.2.2 Multiple output graphics adapters

Multiple output graphics drivers (dual or more) are not significantly more complicated than a single channel adapter in UEFI. An important consideration is that many graphics adapters may run in a single output mode in the pre-boot environment; they may then switch to multi-output mode when the higher performance OS driver loads for the device. An example of a dual output graphics adapter follows.

Figure 27-Example dual-output graphics driver implementation