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ID3D11DeviceContext1::DiscardView1 method

Discards the specified elements in a resource view from the device context.

Syntax


void DiscardView1(
  [in]                 ID3D11View *pResourceView,
  [in, optional] const D3D11_RECT *pRects,
                       UINT       NumRects
);

Parameters

pResourceView [in]

Type: ID3D11View*

A pointer to the ID3D11View interface for the resource view to discard. The resource that underlies the view must have been created with usage D3D11_USAGE_DEFAULT or D3D11_USAGE_DYNAMIC, otherwise the runtime drops the call to DiscardView1; if the debug layer is enabled, the runtime returns an error message.

pRects [in, optional]

Type: const D3D11_RECT*

An array of D3D11_RECT structures for the rectangles in the resource view to discard. If NULL, DiscardView1 discards the entire view and behaves the same as DiscardView.

NumRects

Type: UINT

Number of rectangles in the array that the pRects parameter specifies.

Return value

Returns nothing

Remarks

DiscardView1 informs the graphics processing unit (GPU) that the existing content in the specified elements in the resource view that pResourceView points to is no longer needed. The view can be an SRV, RTV, UAV, or DSV. DiscardView1 is a variation on the DiscardResource method. DiscardView1 allows you to discard elements of a subset of a resource that is in a view (such as elements of a single miplevel). More importantly, DiscardView1 provides a convenience because often views are what are being bound and unbound at the pipeline. Some pipeline bindings do not have views, such as stream output. In that situation, DiscardResource can do the job for any resource.

Requirements

Minimum supported client

Windows 8 and Platform Update for Windows 7 [desktop apps | Windows Store apps]

Minimum supported server

Windows Server 2012 and Platform Update for Windows Server 2008 R2 [desktop apps | Windows Store apps]

Header

D3D11_1.h

Library

D3D11.lib

See also

ID3D11DeviceContext1

 

 

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