ID3D11VideoContext::VideoProcessorGetStreamAlpha method (d3d11.h)

Gets the planar alpha for an input stream on the video processor.

Syntax

void VideoProcessorGetStreamAlpha(
  [in]  ID3D11VideoProcessor *pVideoProcessor,
  [in]  UINT                 StreamIndex,
  [out] BOOL                 *pEnabled,
  [out] FLOAT                *pAlpha
);

Parameters

[in] pVideoProcessor

A pointer to the ID3D11VideoProcessor interface. To get this pointer, call ID3D11VideoDevice::CreateVideoProcessor.

[in] StreamIndex

The zero-based index of the input stream. To get the maximum number of streams, call ID3D11VideoProcessorEnumerator::GetVideoProcessorCaps and check the MaxStreamStates structure member.

[out] pEnabled

Receives the value TRUE if planar alpha is enabled, or FALSE otherwise.

[out] pAlpha

Receives the planar alpha value. The value can range from 0.0 (transparent) to 1.0 (opaque).

Return value

None

Requirements

See also

ID3D11VideoContext