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SetTextFilterSize routine

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



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


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


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.


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.


Target platform



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


D3d10umddi.h (include D3d10umddi.h)

See also




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