D3D11_1_DDI_COPY_FLAGS - NtDoc

Native API online documentation, based on the System Informer (formerly Process Hacker) phnt headers 
// d3d10umddi.h

typedef enum D3D11_1_DDI_COPY_FLAGS {
  D3D11_1DDI_COPY_NO_OVERWRITE,
  D3D11_1DDI_COPY_DISCARD,
  D3D11_1DDI_COPY_TILEABLE
} ;
View the official Windows Driver Kit DDI reference

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Windows Driver Kit DDI reference (ne-d3d10umddi-d3d11_1_ddi_copy_flags)

D3D11_1_DDI_COPY_FLAGS enumeration

Description

Specifies how to handle the existing contents of a resource during a copy or update operation of a region within that resource. Used by Windows Display Driver Model (WDDM) 1.2 and later user-mode display drivers.

Constants

D3D11_1DDI_COPY_NO_OVERWRITE

The caller guarantees that the portion of the surface that is being written to with new data is not currently being referenced or accessed by any previous render operation. The driver can take advantage of this capability to optimize performance and memory usage.

D3D11_1DDI_COPY_DISCARD

The user-mode display driver can discard previous contents of the entire resource. The driver can take advantage of this capability to optimize performance and memory usage.

D3D11_1DDI_COPY_TILEABLE

For tile-based deferred rendering, a copy operation can operate on only the currently processed tile in the source or destination resource, and the scene does not have to be flushed in all tiles.

View the official Windows Driver Kit DDI reference

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