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If you are picking the adapter based on the one with the most memory, you may be having trouble accurately detecting the amount of memory used by Intel HD Graphics. Intel HD Graphics has access to two banks of memory; one dedicated and one shared with the CPU. The size of the two banks are reflected in the DXGI_ADAPTER_DESC structure as DedicatedVideoMemory ...


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Selecting the adapter with the highest available dedicated memory might work in a lot of cases, but in some cases a GPU with less processing power might have more dedicated memory, and your game will still run on the "wrong" adapter. This brings me to a counter-question, what is the right adapter? The one with the most computational power? The one with the ...


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I would allow the player to choose which video card to use, i.e. through a drop down list in the options menu. You can use the GPU with the highest detected VRAM, clock speed, etc. as a sane default. You could go further and prompt the player to choose between "high performance" and "power saving" (chooses the lowest-spec card) for the default when the ...



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