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SetTextFilterSize routine

The SetTextFilterSize function sets the width and height of the monochrome convolution filter.

Syntax


PFND3D10DDI_SETTEXTFILTERSIZE SetTextFilterSize;

VOID APIENTRY SetTextFilterSize(
  _In_  D3D10DDI_HDEVICE hDevice,
  _In_  UINT Width,
  _In_  UINT Height
)
{ ... }

Parameters

hDevice [in]

A handle to the display device (graphics context).

Width [in]

The width of the monochrome convolution filter. The width can be from 1 to 7 texels.

Height [in]

The height of the monochrome convolution filter. The height can be from 1 to 7 texels.

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 number of samples that are required from a kernel's dimensions is actually (Width + 1) x (Height + 1), which can come out to from 4 to 64 samples. These settings apply across all samplers that are configured to use the D3D10_DDI_FILTER_TEXT_1BIT filter from the D3D10_DDI_FILTER enumeration.

SetTextFilterSize ensures that values that are supplied in the Width and Height parameters are in range. The default vaules for Width and Height are both 1, initially. The driver must set these default values during device creation.

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 will determine that the error is critical. Even if the device was removed, the driver is not required to return D3DDDIERR_DEVICEREMOVED. However, if device removal interfered with the operation of SetTextFilterSize (which typically should not happen), the driver can return D3DDDIERR_DEVICEREMOVED.

Requirements

Version

Available in Windows Vista and later versions of the Windows operating systems.

Header

D3d10umddi.h (include D3d10umddi.h)

See also

D3D10_DDI_FILTER
D3D10DDI_DEVICEFUNCS
pfnSetErrorCb

 

 

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