CONST_D3DBLEND

The CONST_D3DBLEND enumeration defines the supported blend mode for the D3DRENDERSTATE_DESTBLEND values in the CONST_D3DRENDERSTATETYPE enumeration. In the member descriptions that follow, the RGBA values of the source and destination are indicated with the subscripts s and d.

Enum CONST_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
End Enum

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

Not supported.

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.

Remarks

D3DBLEND_BOTHSRCALPHA is no longer supported in Direct3D versions for DirectX 6.0 and later. Please explicitly set both D3DBLEND_SRCALPHA and D3DBLEND_INVSRCALPHA separately.