D3D10_BLEND_DESC structure (d3d10.h)

Describes the blend state.

Syntax

typedef struct D3D10_BLEND_DESC {
  BOOL           AlphaToCoverageEnable;
  BOOL           BlendEnable[8];
  D3D10_BLEND    SrcBlend;
  D3D10_BLEND    DestBlend;
  D3D10_BLEND_OP BlendOp;
  D3D10_BLEND    SrcBlendAlpha;
  D3D10_BLEND    DestBlendAlpha;
  D3D10_BLEND_OP BlendOpAlpha;
  UINT8          RenderTargetWriteMask[8];
} D3D10_BLEND_DESC;

Members

AlphaToCoverageEnable

Type: BOOL

Determines whether or not to use alpha-to-coverage as a multisampling technique when setting a pixel to a rendertarget.

BlendEnable[8]

Type: BOOL

Enable (or disable) blending. There are eight elements in this array; these correspond to the eight rendertargets that can be set to output-merger stage at one time.

SrcBlend

Type: D3D10_BLEND

This blend option specifies the first RGB data source and includes an optional pre-blend operation.

DestBlend

Type: D3D10_BLEND

This blend option specifies the second RGB data source and includes an optional pre-blend operation.

BlendOp

Type: D3D10_BLEND_OP

This blend operation defines how to combine the RGB data sources.

SrcBlendAlpha

Type: D3D10_BLEND

This blend option specifies the first alpha data source and includes an optional pre-blend operation. Blend options that end in _COLOR are not allowed.

DestBlendAlpha

Type: D3D10_BLEND

This blend option specifies the second alpha data source and includes an optional pre-blend operation. Blend options that end in _COLOR are not allowed.

BlendOpAlpha

Type: D3D10_BLEND_OP

This blend operation defines how to combine the alpha data sources.

RenderTargetWriteMask[8]

Type: UINT8

A per-pixel write mask that allows control over which components can be written (see D3D10_COLOR_WRITE_ENABLE).

Remarks

To see how blending is done, see Output-Merger Stage (Direct3D 10).

These are the default values for blend state.

State Default Value
AlphaToCoverageEnable FALSE
BlendEnable[8] FALSE (for all 8)
SrcBlend D3D10_BLEND_ONE
DestBlend D3D10_BLEND_ZERO
BlendOp D3D10_BLEND_OP_ADD
SrcBlendAlpha D3D10_BLEND_ONE
DestBlendAlpha D3D10_BLEND_ZERO
BlendOpAlpha D3D10_BLEND_OP_ADD
RenderTargetWriteMask[8] D3D10_COLOR_WRITE_ENABLE_ALL (for all 8)

Requirements

   
Header d3d10.h

See also

Core Structures