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setPurgeableState(_:)

Set (or query) the purgeable state of the image’s underlying texture.

Declaration

func setPurgeableState(_ state: MPSPurgeableState) -> MPSPurgeableState

Parameters

  • state:

    The desired purgeable state of the image’s underlying texture.

Return Value

Returns the prior purgeable state of the image’s underlying texture.

Discussion

This method behaves the same as the setPurgeableState(_:) method of the MTLResource class, except that the state might be MPSPurgeableState.allocationDeferred, which means there is no underlying texture to mark as volatile or non-volatile. Attempts to set a purgeable state on MTLTexture objects that have not yet been allocated will be ignored.

See Also

Methods