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.\"     Title: interpolateAtSample
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: 01/03/2018
.\"    Manual: [FIXME: manual]
.\"    Source: [FIXME: source]
.\"  Language: English
.\"
.TH "INTERPOLATEATSAMPLE" "3G" "01/03/2018" "[FIXME: source]" "[FIXME: manual]"
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.SH "NAME"
interpolateAtSample \- sample a varying at the location of a specified sample
.SH "DECLARATION"
.HP \w'float\ interpolateAtSample('u
.BI "float interpolateAtSample(float\ " "interpolant" ", int\ " "sample" ");"
.HP \w'vec2\ interpolateAtSample('u
.BI "vec2 interpolateAtSample(vec2\ " "interpolant" ", int\ " "sample" ");"
.HP \w'vec3\ interpolateAtSample('u
.BI "vec3 interpolateAtSample(vec3\ " "interpolant" ", int\ " "sample" ");"
.HP \w'vec4\ interpolateAtSample('u
.BI "vec4 interpolateAtSample(vec4\ " "interpolant" ", int\ " "sample" ");"
.SH "PARAMETERS"
.PP
\fIinterpolant\fR
.RS 4
Specifies the interpolant to be sampled at the location of sample
\fIsample\fR\&.
.RE
.PP
\fIsample\fR
.RS 4
Specifies the index of the sample whose location will be used to sample
\fIinterpolant\fR\&.
.RE
.SH "DESCRIPTION"
.PP
\fBinterpolateAtSample\fR
returns the value of the input varying
\fIinterpolant\fR
sampled at the location of sample number
\fIsample\fR\&. If multisample buffers are not available, the input varying will be evaluated at the center of the pixel\&. If sample
\fIsample\fR
does not exist, the position used to interpolate the input varying is undefined\&.
.SH "VERSION SUPPORT"
.TS
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interpolateAtSample
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\-
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.SH "SEE ALSO"
.PP
\fBinterpolateAtCentroid\fR(),
\fBinterpolateAtOffset\fR()
.SH "COPYRIGHT"
.PP
Copyright
\(co
2011\-2014 Khronos Group\&. This material may be distributed subject to the terms and conditions set forth in the Open Publication License, v 1\&.0, 8 June 1999\&.
\m[blue]\fBhttp://opencontent\&.org/openpub/\fR\m[]\&.
.SH "COPYRIGHT"
.br
Copyright \(co 2011-2014 Khronos Group
.br