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XNA Framework Class Library Reference
Microsoft.Xna.Framework.Graphics
RenderState Class
RenderState Properties
AlphaBlendEnable Property
AlphaBlendOperation Property
AlphaDestinationBlend Property
AlphaFunction Property
AlphaSourceBlend Property
AlphaTestEnable Property
BlendFactor Property
BlendFunction Property
ColorWriteChannels Property
ColorWriteChannels1 Property
ColorWriteChannels2 Property
ColorWriteChannels3 Property
CounterClockwiseStencilDepthBufferFail Property
CounterClockwiseStencilFail Property
CounterClockwiseStencilFunction Property
CounterClockwiseStencilPass Property
CullMode Property
DepthBias Property
DepthBufferEnable Property
DepthBufferFunction Property
DepthBufferWriteEnable Property
DestinationBlend Property
FillMode Property
FogColor Property
FogDensity Property
FogEnable Property
FogEnd Property
FogStart Property
FogTableMode Property
FogVertexMode Property
MultiSampleAntiAlias Property
MultiSampleMask Property
PointSize Property
PointSizeMax Property
PointSizeMin Property
PointSpriteEnable Property
RangeFogEnable Property
ReferenceAlpha Property
ReferenceStencil Property
ScissorTestEnable Property
SeparateAlphaBlendEnabled Property
SlopeScaleDepthBias Property
SourceBlend Property
StencilDepthBufferFail Property
StencilEnable Property
StencilFail Property
StencilFunction Property
StencilMask Property
StencilPass Property
StencilWriteMask Property
TwoSidedStencilMode Property
Wrap0 Property
Wrap1 Property
Wrap10 Property
Wrap11 Property
Wrap12 Property
Wrap13 Property
Wrap14 Property
Wrap15 Property
Wrap2 Property
Wrap3 Property
Wrap4 Property
Wrap5 Property
Wrap6 Property
Wrap7 Property
Wrap8 Property
Wrap9 Property
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RenderState.ReferenceAlpha Property

XNA Game Studio 3.0
Specifies a reference alpha value against which pixels are tested when alpha testing is enabled. The default value is 0.

Namespace: Microsoft.Xna.Framework.Graphics
Assembly: Microsoft.Xna.Framework (in microsoft.xna.framework.dll)

C#
Copy 
public int ReferenceAlpha { get; set; }

Property Value

Integer that specifies the reference alpha value to set or get. This is an 8-bit value placed in the low 8 bits of the DWORD render-state value. Values can range from 0x00000000 through 0x000000FF.
Xbox 360, Windows XP SP2, Windows Vista
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