D1230: Unknown Buffer Precision Support
A call to IsBufferPrecisionSupported was made with D2D1_BUFFER_PRECISION_UNKNOWN. This API returns false, though D2D1_BUFFER_PRECISION_UNKNOWN may be valid as an input to some APIs.
A call to IsBufferPrecisionSupported was made with D2D1_BUFFER_PRECISION_UNKNOWN.
Determine whether D2D1_BUFFER_PRECISION_UNKNOWN is a valid buffer precision for a given API by reading the documentation for that API rather than trying to determine this programmatically.