DXVAHDDDI_BLT_STATE_ALPHA_FILL_DATA structure (d3dumddi.h)
The DXVAHDDDI_BLT_STATE_ALPHA_FILL_DATA structure describes data that specifies the alpha-fill mode of the output.
Syntax
typedef struct _DXVAHDDDI_BLT_STATE_ALPHA_FILL_DATA {
[in] DXVAHDDDI_ALPHA_FILL_MODE Mode;
[in] UINT StreamNumber;
} DXVAHDDDI_BLT_STATE_ALPHA_FILL_DATA;
Members
[in] Mode
A DXVAHDDDI_ALPHA_FILL_MODE-typed value that indicates the type of alpha-fill mode to set. The default value is DXVAHDDDI_ALPHA_FILL_MODE_BACKGROUND, which indicates to fill the output with the alpha value of the background color.
[in] StreamNumber
A zero-based stream index number. This number must be less than the number, which the driver sets in the MaxStreamStates member of the DXVAHDDDI_VPDEVCAPS structure. The driver should refer to this number only when the Mode member is set to DXVAHD_ALPHA_FILL_MODE_SOURCE_STREAM. The default value is zero.
Remarks
The Direct3D runtime specifies the DXVAHDDDI_BLT_STATE_ALPHA_FILL state in the State member of the D3DDDIARG_DXVAHD_SETVIDEOPROCESSBLTSTATE structure in a call to the driver's SetVideoProcessBltState function only when the output format is a format type with alpha (for example, D3DDDIFMT_A8R8G8B8 from the D3DDDIFORMAT enumeration).
The DXVAHD_ALPHA_FILL_MODE_SOURCE_STREAM mode requires the following conditions:
- The DXVAHDDDI_BLT_STATE_ALPHA_FILL state only affects alpha within the destination rectangle. The rest of the output remains unchanged.
- If the input format type is without alpha, the source alpha is considered as opaque.
- If the input stream is disabled or unavailable, the output remains unchanged.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | DXVAHDDDI_BLT_STATE_ALPHA_FILL_DATA is supported beginning with the Windows 7 operating system. |
| Header | d3dumddi.h (include D3dumddi.h) |