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.rm #[ #] #H #V #F C
.IX Title "AlphaFunc CgFX"
.TH AlphaFunc CgFX "" "Cg Toolkit 2.2" "CgFX States"
.UC
.SH "NAME"
\&\fBAlphaFunc\fR \- 3D \s-1API\s0 alpha function
.SH "USAGE"
.IX Header "USAGE"
AlphaFunc = float2(function, reference_value)
.SH "VALID ENUMERANTS"
.IX Header "VALID ENUMERANTS"
function: Never, Less, LEqual, Equal, Greater, NotEqual, GEqual, Always
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
Set the OpenGL or Direct3D alpha function and reference value state.  See
the OpenGL glAlphaFunc manual page for details.  See the D3DRS_ALPHAREF
and D3DRS_ALPHAFUNC render state descriptions for DirectX 9.
.PP
The standard reset callback sets the AlphaFunc state to float2(Always, 0.0).
.SH "OPENGL FUNCTIONALITY REQUIREMENTS"
.IX Header "OPENGL FUNCTIONALITY REQUIREMENTS"
OpenGL 1.0
.SH "DIRECT3D FUNCTIONALITY REQUIREMENTS"
.IX Header "DIRECT3D FUNCTIONALITY REQUIREMENTS"
DirectX 9
.SH "SEE ALSO"
.IX Header "SEE ALSO"
AlphaTestEnable, DepthFunc, StencilFunc
