D3D11_BLEND_DESC structure
Describes the blend state that you use in a call to ID3D11Device::CreateBlendState to create a blend-state object.
Syntax
typedef struct D3D11_BLEND_DESC { BOOL AlphaToCoverageEnable; BOOL IndependentBlendEnable; D3D11_RENDER_TARGET_BLEND_DESC RenderTarget[8]; } D3D11_BLEND_DESC;
Members
- AlphaToCoverageEnable
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Type: BOOL
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Specifies whether to use alpha-to-coverage as a multisampling technique when setting a pixel to a render target. For more info about using alpha-to-coverage, see Alpha-To-Coverage.
- IndependentBlendEnable
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Type: BOOL
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Specifies whether to enable independent blending in simultaneous render targets. Set to TRUE to enable independent blending. If set to FALSE, only the RenderTarget[0] members are used; RenderTarget[1..7] are ignored.
- RenderTarget
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Type: D3D11_RENDER_TARGET_BLEND_DESC[8]
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An array of D3D11_RENDER_TARGET_BLEND_DESC structures that describe the blend states for render targets; these correspond to the eight render targets that can be bound to the output-merger stage at one time.
Remarks
Here are the default values for blend state.
| State | Default Value |
|---|---|
| AlphaToCoverageEnable | FALSE |
| IndependentBlendEnable | FALSE |
| RenderTarget[0].BlendEnable | FALSE |
| RenderTarget[0].SrcBlend | D3D11_BLEND_ONE |
| RenderTarget[0].DestBlend | D3D11_BLEND_ZERO |
| RenderTarget[0].BlendOp | D3D11_BLEND_OP_ADD |
| RenderTarget[0].SrcBlendAlpha | D3D11_BLEND_ONE |
| RenderTarget[0].DestBlendAlpha | D3D11_BLEND_ZERO |
| RenderTarget[0].BlendOpAlpha | D3D11_BLEND_OP_ADD |
| RenderTarget[0].RenderTargetWriteMask | D3D11_COLOR_WRITE_ENABLE_ALL |
If the driver type is set to D3D_DRIVER_TYPE_HARDWARE, the feature level is set to less than or equal to D3D_FEATURE_LEVEL_9_3, and the pixel format of the render target is set to DXGI_FORMAT_R8G8B8A8_UNORM_SRGB, DXGI_FORMAT_B8G8R8A8_UNORM_SRGB, or DXGI_FORMAT_B8G8R8X8_UNORM_SRGB, the display device performs the blend in standard RGB (sRGB) space and not in linear space. However, if the feature level is set to greater than D3D_FEATURE_LEVEL_9_3, the display device performs the blend in linear space, which is ideal.
Requirements
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See also