'\" t
.\"     Title: texelFetch
.\"    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 "TEXELFETCH" "3G" "01/03/2018" "[FIXME: source]" "[FIXME: manual]"
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.SH "NAME"
texelFetch \- perform a lookup of a single texel within a texture
.SH "DECLARATION"
.HP \w'gvec4\ texelFetch('u
.BI "gvec4 texelFetch(gsampler1D\ " "sampler" ", int\ " "P" ", int\ " "lod" ");"
.HP \w'gvec4\ texelFetch('u
.BI "gvec4 texelFetch(gsampler2D\ " "sampler" ", ivec2\ " "P" ", int\ " "lod" ");"
.HP \w'gvec4\ texelFetch('u
.BI "gvec4 texelFetch(gsampler3D\ " "sampler" ", ivec3\ " "P" ", int\ " "lod" ");"
.HP \w'gvec4\ texelFetch('u
.BI "gvec4 texelFetch(gsampler2DRect\ " "sampler" ", ivec2\ " "P" ");"
.HP \w'gvec4\ texelFetch('u
.BI "gvec4 texelFetch(gsampler1DArray\ " "sampler" ", ivec2\ " "P" ", int\ " "lod" ");"
.HP \w'gvec4\ texelFetch('u
.BI "gvec4 texelFetch(gsampler2DArray\ " "sampler" ", ivec3\ " "P" ", int\ " "lod" ");"
.HP \w'gvec4\ texelFetch('u
.BI "gvec4 texelFetch(gsamplerBuffer\ " "sampler" ", int\ " "P" ");"
.HP \w'gvec4\ texelFetch('u
.BI "gvec4 texelFetch(gsampler2DMS\ " "sampler" ", ivec2\ " "P" ", sample\ " "sample" ");"
.HP \w'gvec4\ texelFetch('u
.BI "gvec4 texelFetch(gsampler2DMSArray\ " "sampler" ", ivec3\ " "P" ", sample\ " "sample" ");"
.SH "PARAMETERS"
.PP
\fIsampler\fR
.RS 4
Specifies the sampler to which the texture from which texels will be retrieved is bound\&.
.RE
.PP
\fIP\fR
.RS 4
Specifies the texture coordinates at which texture will be sampled\&.
.RE
.PP
\fIlod\fR
.RS 4
If present, specifies the level\-of\-detail within the texture from which the texel will be fetched\&.
.RE
.PP
\fIsample\fR
.RS 4
For multisampled fetches, specifies which sample within the texel from which which will be returned\&.
.RE
.SH "DESCRIPTION"
.PP
\fBtexelFetch\fR
performs a lookup of a single texel from texture coordinate
\fIP\fR
in the texture bound to
\fIsampler\fR\&. The array layer is specified in the last component of
\fIP\fR
for array forms\&. The
\fIlod\fR
parameter (if present) specifies the level\-of\-detail from which the texel will be fetched\&. The
\fIsample\fR
specifies which sample within the texel will be returned when reading from a multi\-sample texure\&.
.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}
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\fBFunction Name\fR
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\fB1\&.10\fR
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.T&
l c c c c c c c c c c c c
l c c c c c c c c c c c c
l c c c c c c c c c c c c.
T{
texelFetch
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\-
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texelFetch (gsampler2DRect, gsamplerBuffer)
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\-
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\-
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\-
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texelFetch (gsampler2DMS, gsampler2DMSArray)
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\-
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\-
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\-
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\-
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.TE
.sp 1
.SH "SEE ALSO"
.PP
\fBtexelFetch\fR(),
\fBtexture\fR(),
\fBtextureGather\fR(),
\fBtextureGatherOffset\fR(),
\fBtextureGatherOffsets\fR(),
\fBtextureGrad\fR(),
\fBtextureGradOffset\fR(),
\fBtextureLod\fR(),
\fBtextureLodOffset\fR(),
\fBtextureOffset\fR(),
\fBtextureProj\fR(),
\fBtextureProjGrad\fR(),
\fBtextureProjGradOffset\fR(),
\fBtextureProjLod\fR(),
\fBtextureProjLodOffset\fR(),
\fBtextureProjOffset\fR(),
\fBtextureQueryLod\fR(),
\fBtextureSize\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