As with SetProcessDefaultCpuSets, ReleaseExclusiveCpuSets applies to the whole process. However, the game would still get access to other Game Mode resources, such as increased GPU prioritization. Based on the developer's judgment, they may opt-out of CPU exclusivity by calling ReleaseExclusiveCpuSets to get access to all cores, but at a higher latency due to other processes and system activities being scheduled on the same cores as the game. Some games may reduce the level of detail or use other tactics to maintain performance.Ī small number of games may choose to call GetExpandedResourceExclusiveCpuCount to determine what CPU resources are available for exclusive use. When exclusive resources are revoked, such as when the game loses focus, the game will discover this by polling with HasExpandedResources, and can re-scale as appropriate.
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The SYSTEM_CPU_SET_INFORMATION structure returned by GetSystemCpuSetInformation exposes details that the game can use to scale the number of threads it runs, and give threads the affinity for the appropriate cores using SetThreadSelectedCpuSets. Using this function, deeper inspection, such as getting cache details, can be achieved to rank the cores for performance. When they have been granted, the game can call GetSystemCpuSetInformation to understand what cores the game is eligible to use. Games should call HasExpandedResources once per frame or game tick to determine whether exclusive resources have been granted. You can publish a UWP app with this capability to the Store if it targets desktop, but if it targets Xbox it will be rejected in certification. This capability is granted on a per-title basis contact your account manager for more information.
WINDOWS 10 CONSERVATION MODE CODE
Alternatively, you can edit the file's code directly: ReleaseExclusiveCpuSets requires the expandedResources restricted capability, which you can select by opening Package.appxmanifest in Visual Studio and navigating to the Capabilities tab.
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The Game Mode API has the following members:
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As part of launching the game, the process will go into Game Mode with a set of defaults, and you can use the APIs to see what resources are available on the customer's device. You can leverage the available system resources in a way that best fits your game design and the configuration of the customer's system.īy using the expandedResources capability, you can explicitly declare that the game will work with Game Mode. However, you can use the Game Mode API to take it a step further and programmatically query for available system resources, determining whether the operating system considers each resource as shared or exclusive.
WINDOWS 10 CONSERVATION MODE WINDOWS
Game Mode works by default for most Windows games, requiring no action or opt-in by the customer, and no work by the game developer. The app must be in the foreground and have focus before exclusive resources are granted.