The D2D1_SEPIA_PROP_INTENSITY property is a float value indicating the intesity of the sepia effect. The allowed range is 0.0 to 1.0. The default value is 0.5.
The D2D1_SEPIA_PROP_ALPHA_MODE property is a D2D1_ALPHA_MODE enumeration value indicating the alpha mode of the input file.
See the About Alpha Modes section of the Supported Pixel Formats and Alpha Modes topic for additional information..
The default value is D2D1_ALPHA_MODE_PREMULTIPLIED.
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