DXGK_ALLOCATIONUSAGEINFO1 - NtDoc
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headers
// d3dkmddi.h
typedef struct _DXGK_ALLOCATIONUSAGEINFO1 {
union {
struct {
UINT PrivateFormat : 1;
UINT Swizzled : 1;
UINT MipMap : 1;
UINT Cube : 1;
UINT Volume : 1;
UINT Vertex : 1;
UINT Index : 1;
UINT Reserved : 25;
};
UINT Value;
} Flags;
union {
[out] D3DDDIFORMAT Format;
[out] UINT PrivateFormat;
};
[out] UINT SwizzledFormat;
[out] UINT ByteOffset;
[out] UINT Width;
[out] UINT Height;
[out] UINT Pitch;
[out] UINT Depth;
[out] UINT SlicePitch;
} DXGK_ALLOCATIONUSAGEINFO1;
View the official Windows Driver Kit DDI referenceNo description available.
The DXGK_ALLOCATIONUSAGEINFO1 structure describes how an allocation can be used in DMA buffering.
Flags [out]A union that contains either a structure (with the first eight members that are described below) or a 32-bit value (in the Value member) that identifies how the allocation is used:
Flags.PrivateFormatA UINT value that specifies whether the allocation is a private vendor format.
Setting this is equivalent to setting the first bit of the 32-bit Value member (0x00000001).
Flags.SwizzledA UINT value that specifies whether the allocation is swizzled or tiled.
Setting this is equivalent to setting the second bit of the 32-bit Value member (0x00000002).
Flags.MipMapA UINT value that specifies whether the allocation is a MIP-mapped texture.
Setting this is equivalent to setting the third bit of the 32-bit Value member (0x00000004).
Flags.CubeA UINT value that specifies whether the allocation is a cube texture.
Setting this is equivalent to setting the fourth bit of the 32-bit Value member (0x00000008).
Flags.VolumeA UINT value that specifies whether the allocation is a volume texture.
Setting this is equivalent to setting the fifth bit of the 32-bit Value member (0x00000010).
Flags.VertexA UINT value that specifies whether the allocation is a vertex buffer.
Setting this is equivalent to setting the sixth bit of the 32-bit Value member (0x00000020).
Flags.IndexA UINT value that specifies whether the allocation is an index buffer.
Setting this is equivalent to setting the seventh bit of the 32-bit Value member (0x00000040).
Flags.ReservedThis member is reserved and should be set to zero. Setting this to zero is equivalent to setting the remaining 25 bits (0xFFFFFF80) of the 32-bit Value member to zeros.
Flags.ValueSpecifies a member in the union contained in the Flags member that can hold one 32-bit value that identifies how the allocation is used.
Format [out]A D3DDDIFORMAT-typed value that indicates the pixel format of the allocation. The PrivateFormat bit-field flag in the Flags member must be set to 0 (FALSE).
PrivateFormat [out]A private format value for the allocation. The PrivateFormat bit-field flag in the Flags member must be set to 1 (TRUE).
SwizzledFormat [out]A swizzled format value for the allocation that is private to a specific vendor.
ByteOffset [out]The offset, in bytes, into the video memory manager's allocation that marks the start of the driver's version of the allocation.
Width [out]The width, in pixels, of the allocation.
Height [out]The height, in number of lines, of the allocation.
Pitch [out]The pitch, in bytes, of the allocation--that is, the distance, in bytes, to the start of the next line.
Depth [out]The depth, in levels, of the allocation (for MIP-mapped and volume textures only).
SlicePitch [out]The slice pitch, in bytes, from level to level (for cube and volume textures only).