D3DBLEND

The D3DBLEND enumerated type defines the supported blend mode for the D3DRENDERSTATE_DESTBLEND values in the D3DRENDERSTATETYPE enumerated type. In the member descriptions that follow, the RGBA values of the source and destination are indicated by the subscripts s and d.

typedef enum _D3DBLEND { 
    D3DBLEND_ZERO            = 1, 
    D3DBLEND_ONE             = 2, 
    D3DBLEND_SRCCOLOR        = 3, 
    D3DBLEND_INVSRCCOLOR     = 4, 
    D3DBLEND_SRCALPHA        = 5, 
    D3DBLEND_INVSRCALPHA     = 6, 
    D3DBLEND_DESTALPHA       = 7, 
    D3DBLEND_INVDESTALPHA    = 8, 
    D3DBLEND_DESTCOLOR       = 9, 
    D3DBLEND_INVDESTCOLOR    = 10, 
    D3DBLEND_SRCALPHASAT     = 11, 
    D3DBLEND_BOTHSRCALPHA    = 12, 
    D3DBLEND_BOTHINVSRCALPHA = 13, 
    D3DBLEND_FORCE_DWORD   = 0x7fffffff, 
} D3DBLEND; 

D3DBLEND_ZERO

Blend factor is (0, 0, 0, 0).

D3DBLEND_ONE

Blend factor is (1, 1, 1, 1).

D3DBLEND_SRCCOLOR

Blend factor is (R_s, G_s, B_s, A_s).

D3DBLEND_INVSRCCOLOR

Blend factor is (1–R_s, 1–G_s, 1–B_s, 1–A_s).

D3DBLEND_SRCALPHA

Blend factor is (A_s, A_s, A_s, A_s).

D3DBLEND_INVSRCALPHA

Blend factor is (1–A_s, 1–A_s, 1–A_s, 1–A_s).

D3DBLEND_DESTALPHA

Blend factor is (A_d, A_d, A_d, A_d).

D3DBLEND_INVDESTALPHA

Blend factor is (1–A_d, 1–A_d, 1–A_d, 1–A_d).

D3DBLEND_DESTCOLOR

Blend factor is (R_d, G_d, B_d, A_d).

D3DBLEND_INVDESTCOLOR

Blend factor is (1–R_d, 1–G_d, 1–B_d, 1–A_d).

D3DBLEND_SRCALPHASAT

Blend factor is (f, f, f, 1); f = min(A_s, 1–A_d).

D3DBLEND_BOTHSRCALPHA

Obsolete. For DirectX 6.0 and later, you can achieve the same affect by setting the source and destination blend factors to D3DBLEND_SRCALPHA and D3DBLEND_INVSRCALPHA in separate calls.

D3DBLEND_BOTHINVSRCALPHA

Source blend factor is (1–A_s, 1–A_s, 1–A_s, 1–A_s), and destination blend factor is (A_s, A_s, A_s, A_s); the destination blend selection is overridden. This blend mode is supported only for the D3DRENDERSTATE_SRCBLEND render state.

D3DBLEND_FORCE_DWORD

Forces this enumeration to compile to 32 bits in size. This value is not used.

Requirements

  Windows NT/2000: Requires Windows NT 4.0 SP3 or later.
  Windows 95/98: Requires Windows 95 or later. Available as a redistributable for Windows 95.
  Windows CE: Unsupported.
  Version: Requires DirectX 2.0 or later.
  Header: Declared in d3dtypes.h.