PFND3D11_1DDI_VIDEOPROCESSORSETSTREAMLUMAKEY - NtDoc
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// d3d10umddi.h
PFND3D11_1DDI_VIDEOPROCESSORSETSTREAMLUMAKEY Pfnd3d111DdiVideoprocessorsetstreamlumakey;
VOID Pfnd3d111DdiVideoprocessorsetstreamlumakey(
D3D10DDI_HDEVICE unnamedParam1,
D3D11_1DDI_HVIDEOPROCESSOR unnamedParam2,
UINT unnamedParam3,
BOOL unnamedParam4,
FLOAT unnamedParam5,
FLOAT unnamedParam6
)
{...}
View the official Windows Driver Kit DDI referenceNo description available.
Sets the luma key for an input stream on the video processor.
unnamedParam1hDevice [in]
A handle to the display device (graphics context).
unnamedParam2hVideoProcessor [in]
A handle to the video processor object that was created through a call to the CreateVideoProcessor function.
unnamedParam3StreamIndex [in]
The zero-based index of the input stream.
unnamedParam4Lower [in]
The lower bound for the luma key. The valid range is from zero to one.
Note If the Enable parameter is FALSE, this parameter is ignored.
unnamedParam5Enable [in]
If TRUE, the luma key is enabled on the specified input stream of the video processor.
unnamedParam6Upper [in]
The upper bound for the luma key. The valid range is from zero to one.
Note If the Enable parameter is FALSE, this parameter is ignored.
The values of Lower and Upper give the lower and upper bounds of the luma key by using a nominal range from zero to one. Given a format with n bits per channel, these values are converted to luma values as follows:
val = f * ((1 << n)-1)
Any pixel whose luma value falls within the upper and lower bounds (inclusive) is treated as transparent.
For example, if the pixel format uses 8-bit luma, the upper bound is calculated as follows:
BYTE Y = BYTE(max(min(1.0, Upper), 0.0) * 255.0)
Note that the value is clamped to the range from zero to one before multiplying by 255.
The driver reports its ability to support stereo alpha blending for an input stream in the D3D11_1DDI_VIDEO_PROCESSOR_CAPS structure that is returned through the GetVideoProcessorCaps function. If the driver supports the D3D11_1DDI_VIDEO_PROCESSOR_FEATURE_CAPS_LUMA_KEY capability, it can be enabled or disabled to set a luma key on an input stream of the video processor.
Note If the driver does not support the D3D11_1DDI_VIDEO_PROCESSOR_FEATURE_CAPS_LUMA_KEY capability, the Microsoft Direct3D runtime does not call the VideoProcessorSetStreamLumaKey function.
D3D11_1DDI_VIDEO_PROCESSOR_CAPS