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.rm #[ #] #H #V #F C
.IX Title "clip Cg"
.TH clip Cg "" "Cg Toolkit 2.2" "Cg Standard Library"
.UC
.SH "NAME"
\&\fBclip\fR \- conditionally kill a pixel before output
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 5
\&  void clip(float4 x);
\&  void clip(float3 x);
\&  void clip(float2 x);
\&  void clip(float1 x);
\&  void clip(float  x);
.Ve
.SH "PARAMETERS"
.IX Header "PARAMETERS"
.Ip "x" 8
.IX Item "x"
Vector/scalar condition to clip on
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
kills the current pixel output if any component of the given vector, or the given scalar, is negative
.SH "REFERENCE IMPLEMENTATION"
.IX Header "REFERENCE IMPLEMENTATION"
\&\fBclip\fR is equivalent to
.PP
.Vb 5
\&  void clip(float4 x)
\&  {
\&    if (any(x < 0))
\&      discard;
\&  }
.Ve
.SH "PROFILE SUPPORT"
.IX Header "PROFILE SUPPORT"
\&\fBclip\fR is supported in all pixel/fragment profiles.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
