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SetResourceMinLOD routine

The SetResourceMinLOD function sets the minimum level of detail (LOD) for a resource.

Syntax


PFND3D11DDI_SETRESOURCEMINLOD SetResourceMinLOD;

VOID APIENTRY SetResourceMinLOD(
  _In_  D3D10DDI_HDEVICE hDevice,
  _In_  D3D10DDI_HRESOURCE hResource,
  _In_  FLOAT MinLOD
)
{ ... }

Parameters

hDevice [in]

A handle to the display device (graphics context).

hResource [in]

A handle to the driver's private data for the resource.

MinLOD [in]

A single-precision float vector to set for the minimum level of detail (LOD) for the resource.

Return value

None

The driver can use the pfnSetErrorCb callback function to set an error code. For more information about setting error codes, see the following Remarks section.

Remarks

The driver should not encounter any error, except for D3DDDIERR_DEVICEREMOVED. Therefore, if the driver passes any error, except for D3DDDIERR_DEVICEREMOVED, in a call to the pfnSetErrorCb function, the Direct3D runtime determines that the error is critical. Even if the device is removed, the driver is not required to return D3DDDIERR_DEVICEREMOVED; however, if device removal interferes with the operation of SetResourceMinLOD (which typically should not happen), the driver can return D3DDDIERR_DEVICEREMOVED.

The Direct3D runtime calls the driver's SetResourceMinLOD function to set the minimum LOD (that is, the lowest MIP map) that a shader can sample from. This minimum LOD is ignored for some operations like for the operation that the driver's ResourceCopy function performs.

Requirements

Version

SetResourceMinLOD is supported beginning with the Windows 7 operating system.

Header

D3d10umddi.h (include D3d10umddi.h)

See also

D3D11DDI_DEVICEFUNCS
pfnSetErrorCb

 

 

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