MF_MT_ALPHA_MODE attribute
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Specifies whether the alpha mode for color media video types is premultiplied or straight.
Data type
UINT32
Remarks
This value can be cast to a DXGI_ALPHA_MODE value. If this attribute isn’t present, for backward compatibility, the value is DXGI_ALPHA_MODE_STRAIGHT for video format supporting alpha channel, such as ARGB32, or DXGI_ALPHA_MODE_IGNORE for video format without alpha channel, such as RGB32.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client |
Windows 10, version 1709 [desktop apps only] |
| Minimum supported server |
Windows Server, version 1709 [desktop apps only] |
| Header |
|
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