The D3DSPAN structure defines a span for the D3DOP_SPAN opcode in the D3DOPCODE enumerated type. Spans join a list of points with the same y value. If the y value changes, a new span is started.
typedef struct _D3DSPAN {
WORD wCount;
WORD wFirst;
} D3DSPAN, *LPD3DSPAN;
Windows NT: Use version 4.0 or later.
Windows: Use Windows 95 or later. Available as a redistributable for Windows 95.
Windows CE: Unsupported.
Header: Declared in d3dtypes.h.
D3DOPCODE