Ooogles.Net - Object Oriented OpenGL-ES 2.0
Ooogles
gl Class
gl Methods
BlendColor Method
BlendEquation Method
BlendEquationSeparate Method
BlendFunc Method
BlendFuncSeparate Method
Clear Method
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ClearDepth Method
ClearStencil Method
ColorMask Method
CullFace Method
DepthFunc Method
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DepthRange Method
Disable Method
DrawArrays Method
DrawElements Method
Enable Method
Finish Method
Flush Method
FrontFace Method
GetAliasedLineWidthRange Method
GetAliasedPointSizeRange Method
GetBlendColor Method
GetBlendDstAlpha Method
GetBlendDstRgb Method
GetBlendEquationAlpha Method
GetBlendEquationRgb Method
GetBlendSrcAlpha Method
GetBlendSrcRgb Method
GetClearColor Method
GetClearDepth Method
GetClearStencil Method
GetColorMask Method
GetCullFace Method
GetDepthFunc Method
GetDepthMask Method
GetDepthRange Method
GetError Method
GetExtensions Method
GetFrontFace Method
GetLineWidth Method
GetMaxViewportDimensions Method
GetPixelStore Method
GetPolygonOffsetFactor Method
GetPolygonOffsetUnits Method
GetRenderer Method
GetSampleAlphaToCoverage Method
GetSampleCoverage Method
GetSampleCoverageInvert Method
GetSampleCoverageValue Method
GetScissor Method
GetShadingLanguageVersion Method
GetStencilBackFail Method
GetStencilBackFunc Method
GetStencilBackPassDepthFail Method
GetStencilBackPassDepthPass Method
GetStencilBackRef Method
GetStencilBackValueMask Method
GetStencilBackWriteMask Method
GetStencilFail Method
GetStencilFunc Method
GetStencilPassDepthFail Method
GetStencilPassDepthPass Method
GetStencilRef Method
GetStencilValueMask Method
GetStencilWriteMask Method
GetSubpixelBits Method
GetVendor Method
GetVersion Method
GetViewport Method
IsEnabled Method
LineWidth Method
PixelStore Method
PolygonOffset Method
SampleCoverage Method
Scissor Method
StencilFunc Method
StencilFuncSeparate Method
StencilMask Method
StencilMaskSeparate Method
StencilOperation Method
StencilOperationSeparate Method
Viewport Method
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glBlendFunc Method

Specify pixel arithmetic using blend functions.

Namespace:  Ooogles
Assembly:  Ooogles (in Ooogles.dll) Version: 1.0.0.0 (1.0.0.0)
Syntax
Copy
public static void BlendFunc(
	glBlendFactor srcFactor,
	glBlendFactor dstFactor
)

Parameters

srcFactor
Type: OooglesglBlendFactor
specifies how the red, green, blue, and alpha source blending factors are computed. The initial value is One.
dstFactor
Type: OooglesglBlendFactor
specifies how the red, green, blue, and alpha destination blending factors are computed. The initial value is Zero.
Remarks
Pixels can be drawn using a function that blends the incoming (source) RGBA values with the RGBA values that are already in the frame buffer (the destination values). Blending is initially disabled. Use Enable(glCapability) and Disable(glCapability) with argument Blend to enable and disable blending.

BlendFunc defines the operation of blending when it is enabled. ASrcFactor specifies which method is used to scale the source color components. ADstFactor specifies which method is used to scale the destination color components. See glBlendFactor for a description of the possible operations.

Note: incoming (source) alpha is correctly thought of as a material opacity, ranging from 1.0, representing complete opacity, to 0.0, representing complete transparency.

Note: transparency is best implemented using blend function (SrcAlpha, OneMinusSrcAlpha) with primitives sorted from farthest to nearest. Note that this transparency calculation does not require the presence of alpha bitplanes in the frame buffer.

OpenGL API: glBlendFunc

See Also

Reference

gl Class
Ooogles Namespace
glGetBlendSrcRgb
glGetBlendSrcAlpha
glGetBlendDstRgb
glGetBlendDstAlpha
glBlendColor(Color4)
glBlendEquation(glBlendEquationMode)
glBlendEquationSeparate(glBlendEquationMode, glBlendEquationMode)
glClear(glClearBuffers)
glEnable(glCapability)
glStencilFunc(glCompareFunc, Int32, UInt32)
glBlendFuncSeparate(glBlendFactor, glBlendFactor, glBlendFactor, glBlendFactor)