'\" t
.\"     Title: interpolateAtOffset
.\"    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 "INTERPOLATEATOFFSET" "3G" "01/03/2018" "[FIXME: source]" "[FIXME: manual]"
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.SH "NAME"
interpolateAtOffset \- sample a varying at specified offset from the center of a pixel
.SH "DECLARATION"
.HP \w'float\ interpolateAtOffset('u
.BI "float interpolateAtOffset(float\ " "interpolant" ", vec2\ " "offset" ");"
.HP \w'vec2\ interpolateAtOffset('u
.BI "vec2 interpolateAtOffset(vec2\ " "interpolant" ", vec2\ " "offset" ");"
.HP \w'vec3\ interpolateAtOffset('u
.BI "vec3 interpolateAtOffset(vec3\ " "interpolant" ", vec2\ " "offset" ");"
.HP \w'vec4\ interpolateAtOffset('u
.BI "vec4 interpolateAtOffset(vec4\ " "interpolant" ", vec2\ " "offset" ");"
.SH "PARAMETERS"
.PP
\fIinterpolant\fR
.RS 4
Specifies the interpolant to be sampled at the specified offset\&.
.RE
.PP
\fIoffset\fR
.RS 4
Specifies the offset from the center of the pixel at which to sample
\fIinterpolant\fR\&.
.RE
.SH "DESCRIPTION"
.PP
\fBinterpolateAtOffset\fR
returns the value of the input varying
\fIinterpolant\fR
sampled at an offset from the center of the pixel specified by
\fIoffset\fR\&. The two floating\-point components of
\fIoffset\fR
give the offset in pixels in the
\fIx\fR
and
\fIy\fR
directions from the center of the pixel, respectively\&. An offset of (0, 0) identifies the center of the pixel\&. The range and granularity of offsets supported by this function is implementation\-dependent\&.
.SH "VERSION SUPPORT"
.TS
allbox tab(:);
lB cB s s s s s s s s s s s
lB cB cB cB cB cB cB cB cB cB cB cB cB.
T{

T}:T{
\fBOpenGL Shading Language Version\fR
T}
T{
\fBFunction Name\fR
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\fB1\&.10\fR
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\fB1\&.20\fR
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\fB1\&.30\fR
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\fB1\&.40\fR
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\fB1\&.50\fR
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\fB3\&.30\fR
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\fB4\&.00\fR
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\fB4\&.10\fR
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\fB4\&.20\fR
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\fB4\&.30\fR
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\fB4\&.40\fR
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\fB4\&.50\fR
T}
.T&
l c c c c c c c c c c c c.
T{
interpolateAtoOffset
T}:T{
\-
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\-
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\-
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\-
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\-
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\-
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✔
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✔
T}:T{
✔
T}:T{
✔
T}:T{
✔
T}:T{
✔
T}
.TE
.sp 1
.SH "SEE ALSO"
.PP
\fBinterpolateAtCentroid\fR(),
\fBinterpolateAtSample\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