---
title: Metal variables
framework: Metal
role: collectionGroup
role_heading: API Collection
path: metal/metal-variables
---

# Metal variables

## Topics

### Global variables

- [MTLResourceCPUCacheModeMask](metal/mtlresourcecpucachemodemask.md)
- [MTLResourceCPUCacheModeShift](metal/mtlresourcecpucachemodeshift.md)
- [MTLResourceHazardTrackingModeMask](metal/mtlresourcehazardtrackingmodemask.md)
- [MTLResourceHazardTrackingModeShift](metal/mtlresourcehazardtrackingmodeshift.md)
- [MTLResourceStorageModeMask](metal/mtlresourcestoragemodemask.md)
- [MTLResourceStorageModeShift](metal/mtlresourcestoragemodeshift.md)
- [iPhonePerformanceGaming](metal/nsdevicecertification/iphoneperformancegaming.md)
- [default](metal/nsprocessperformanceprofile/default.md)
- [sustained](metal/nsprocessperformanceprofile/sustained.md)

## See Also

### Reference

- [Metal structures](metal/metal-structures.md)
- [Metal enumerations](metal/metal-enumerations.md)
- [Metal constants](metal/metal-constants.md)
- [Metal data types](metal/metal-data-types.md)