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XNA Game Studio

XNA Game Studio 3.0

XNA Framework Class Library Reference

Microsoft.Xna.Framework.Graphics

BasicDirectionalLight Class

BasicEffect Class

Blend Enumeration

BlendFunction Enumeration

BufferUsage Enumeration

ClearOptions Enumeration

ClipPlane Class

ClipPlaneCollection Class

Color Structure

ColorWriteChannels Enumeration

CompareFunction Enumeration

CompilationFailedException Class

CompiledEffect Structure

CompiledShader Structure

CompilerIncludeHandler Class

CompilerIncludeHandlerType Enumeration

CompilerMacro Structure

CompilerOptions Enumeration

CubeMapFace Enumeration

CullMode Enumeration

DepthFormat Enumeration

DepthStencilBuffer Class

DeviceLostException Class

DeviceNotResetException Class

DeviceNotSupportedException Class

DeviceStillDrawingException Class

DeviceType Enumeration

DisplayMode Structure

DisplayModeCollection Structure

DriverInternalErrorException Class

DynamicIndexBuffer Class

DynamicVertexBuffer Class

Effect Class

EffectAnnotation Class

EffectAnnotationCollection Class

EffectFunction Class

EffectFunctionCollection Class

EffectParameter Class

EffectParameterBlock Class

EffectParameterClass Enumeration

EffectParameterCollection Class

EffectParameterType Enumeration

EffectPass Class

EffectPassCollection Class

EffectPool Class

EffectTechnique Class

EffectTechniqueCollection Class

FillMode Enumeration

FilterOptions Enumeration

FogMode Enumeration

GammaRamp Class

GraphicsAdapter Class

GraphicsDevice Class

GraphicsDeviceCapabilities Class

GraphicsDeviceCapabilities.AddressCaps Structure

GraphicsDeviceCapabilities.BlendCaps Structure

GraphicsDeviceCapabilities.CompareCaps Structure

GraphicsDeviceCapabilities.CursorCaps Structure

GraphicsDeviceCapabilities.DeclarationTypeCaps Structure

GraphicsDeviceCapabilities.DeviceCaps Structure

GraphicsDeviceCapabilities.DriverCaps Structure

GraphicsDeviceCapabilities.FilterCaps Structure

GraphicsDeviceCapabilities.LineCaps Structure

GraphicsDeviceCapabilities.PixelShaderCaps Structure

GraphicsDeviceCapabilities.PrimitiveCaps Structure

GraphicsDeviceCapabilities.RasterCaps Structure

GraphicsDeviceCapabilities.ShadingCaps Structure

GraphicsDeviceCapabilities.StencilCaps Structure

GraphicsDeviceCapabilities.TextureCaps Structure

GraphicsDeviceCapabilities.VertexFormatCaps Structure

GraphicsDeviceCapabilities.VertexProcessingCaps Structure

GraphicsDeviceCapabilities.VertexShaderCaps Structure

GraphicsDeviceCreationParameters Structure

GraphicsDeviceStatus Enumeration

GraphicsResource Class

IGraphicsDeviceService Interface

ImageFileFormat Enumeration

IndexBuffer Class

IndexElementSize Enumeration

Model Class

ModelBone Class

ModelBoneCollection Class

ModelBoneCollection.Enumerator Structure

ModelEffectCollection Class

ModelEffectCollection.Enumerator Structure

ModelMesh Class

ModelMeshCollection Class

ModelMeshCollection.Enumerator Structure

ModelMeshPart Class

ModelMeshPartCollection Class

ModelMeshPartCollection.Enumerator Structure

MultiSampleType Enumeration

OcclusionQuery Class

OutOfVideoMemoryException Class

PixelShader Class

PresentationParameters Class

PresentInterval Enumeration

PresentOptions Enumeration

PrimitiveType Enumeration

QueryUsages Enumeration

RasterStatus Structure

RenderState Class

RenderTarget Class

RenderTarget2D Class

RenderTargetCube Class

RenderTargetUsage Enumeration

ResolveTexture2D Class

ResourceCreatedEventArgs Class

ResourceDestroyedEventArgs Class

ResourceType Enumeration

SamplerState Class

SamplerStateCollection Class

SaveStateMode Enumeration

SetDataOptions Enumeration

ShaderCompiler Class

ShaderConstant Class

ShaderConstantCollection Class

ShaderConstantTable Class

ShaderProfile Enumeration

ShaderRegisterSet Enumeration

ShaderSemantic Structure

SpriteBatch Class

SpriteBlendMode Enumeration

SpriteEffects Enumeration

SpriteFont Class

SpriteSortMode Enumeration

StateBlock Class

StencilOperation Enumeration

SurfaceFormat Enumeration

SwapEffect Enumeration

Texture Class

Texture2D Class

Texture3D Class

TextureAddressMode Enumeration

TextureCollection Class

TextureCreationParameters Structure

TextureCube Class

TextureFilter Enumeration

TextureInformation Structure

TextureUsage Enumeration

TextureWrapCoordinates Enumeration

VertexBuffer Class

VertexDeclaration Class

VertexElement Structure

VertexElementFormat Enumeration

VertexElementMethod Enumeration

VertexElementUsage Enumeration

VertexPositionColor Structure

VertexPositionColorTexture Structure

VertexPositionNormalTexture Structure

VertexPositionTexture Structure

VertexShader Class

VertexStream Class

VertexStreamCollection Class

Viewport Structure

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BlendFunction Enumeration

XNA Game Studio 3.0

Defines how to combine a source color with the destination color already on the render target for color blending.

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

public enum BlendFunction

	Member name	Description
	Add	The result is the destination added to the source. Result = (Source Color Source Blend) + (Destination Color * Destination Blend*)
	Max	The result is the maximum of the source and destination. Result = max( (Source Color Source Blend), (Destination Color * Destination Blend*) )
	Min	The result is the minimum of the source and destination. Result = min( (Source Color Source Blend), (Destination Color * Destination Blend*) )
	ReverseSubtract	The result is the source subtracted from the destination. Result = (Destination Color Destination Blend) − (Source Color * Source Blend*)
	Subtract	The result is the destination subtracted from the source. Result = (Source Color Source Blend) − (Destination Color * Destination Blend*)

The alpha value of a color controls its transparency. Enabling alpha blending with AlphaBlendEnable allows colors, materials, and textures on a surface to be blended with transparency onto another surface.

Alpha blending is determined by the SourceBlend and DestinationBlend properties. With the default BlendFunction, the source pixel times the SourceBlend is added to the destination pixel (the pixel on the back buffer) times the DestinationBlend to produce a color that is a blend of the two pixel colors. The BlendFunction determines the operation used on the outcome of the source blend and destination blend components.

Reference

BlendFunction
SourceBlend
DestinationBlend
SupportsBlendOperation
AlphaSourceBlend
AlphaDestinationBlend
AlphaBlendOperation
Microsoft.Xna.Framework.Graphics Namespace

Xbox 360, Windows XP SP2, Windows Vista

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