DXGKARG_DESCRIBEALLOCATION structure (d3dkmddi.h)
The DXGKARG_DESCRIBEALLOCATION structure describes an existing allocation.
Syntax
typedef struct _DXGKARG_DESCRIBEALLOCATION {
[in] HANDLE hAllocation;
[out] UINT Width;
[out] UINT Height;
[out] D3DDDIFORMAT Format;
[out] D3DDDI_MULTISAMPLINGMETHOD MultisampleMethod;
[out] D3DDDI_RATIONAL RefreshRate;
[out] UINT PrivateDriverFormatAttribute;
[out] DXGK_DESCRIBEALLOCATIONFLAGS Flags;
[out] D3DDDI_ROTATION Rotation;
} DXGKARG_DESCRIBEALLOCATION;
Members
[in] hAllocation
A handle to an allocation that information is requested for. The driver previously returned this handle in the hAllocation member of the DXGK_ALLOCATIONINFO structure from a call to the driver's DxgkDdiCreateAllocation function.
[out] Width
The width of the allocation, in pixels. The driver returns the width value.
[out] Height
The height of the allocation, in pixels. The driver returns the height value.
[out] Format
A D3DDDIFORMAT-typed value that indicates the pixel format of the allocation. The driver returns the format value.
[out] MultisampleMethod
A D3DDDI_MULTISAMPLINGMETHOD structure that describes the multiple-sampling method that is used for the allocation. The driver returns the description.
[out] RefreshRate
A D3DDDI_RATIONAL structure that indicates the refresh rate that the primary surface was created with, if applicable.
[out] PrivateDriverFormatAttribute
A UINT value that specifies a private format attribute for the allocation. The driver specifies surface format attributes (for example, the pixel layout of a tiled surface) that it otherwise cannot expose to the operating system.
The operating system uses the information in PrivateDriverFormatAttribute to compare two surfaces. For example, an A8R8B8G8 800x600 surface and an X8R8B8G8 800x600 surface should have the same information in PrivateDriverFormatAttribute if they have the same format attributes, which includes pixel layout.
[out] Flags
This member is reserved.
Supported starting with Windows 8.
[out] Rotation
This member is reserved.
Supported starting with Windows 8.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Available starting with Windows Vista. |
| Header | d3dkmddi.h (include D3dkmddi.h) |