'\" t
.\"     Title: imageLoad
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
.\"      Date: 05/21/2015
.\"    Manual: [FIXME: manual]
.\"    Source: [FIXME: source]
.\"  Language: English
.\"
.TH "IMAGELOAD" "3G" "05/21/2015" "[FIXME: source]" "[FIXME: manual]"
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.SH "NAME"
imageLoad \- load a single texel from an image
.SH "DECLARATION"
.HP \w'gvec4\ imageLoad('u
.BI "gvec4 imageLoad(gimage1D\ " "image" ", int\ " "P" ");"
.HP \w'gvec4\ imageLoad('u
.BI "gvec4 imageLoad(gimage2D\ " "image" ", ivec2\ " "P" ");"
.HP \w'gvec4\ imageLoad('u
.BI "gvec4 imageLoad(gimage3D\ " "image" ", ivec3\ " "P" ");"
.HP \w'gvec4\ imageLoad('u
.BI "gvec4 imageLoad(gimage2DRect\ " "image" ", ivec2\ " "P" ");"
.HP \w'gvec4\ imageLoad('u
.BI "gvec4 imageLoad(gimageCube\ " "image" ", ivec3\ " "P" ");"
.HP \w'gvec4\ imageLoad('u
.BI "gvec4 imageLoad(gbufferImage\ " "image" ", int\ " "P" ");"
.HP \w'gvec4\ imageLoad('u
.BI "gvec4 imageLoad(gimage1DArray\ " "image" ", ivec2\ " "P" ");"
.HP \w'gvec4\ imageLoad('u
.BI "gvec4 imageLoad(gimage2DArray\ " "image" ", ivec3\ " "P" ");"
.HP \w'gvec4\ imageLoad('u
.BI "gvec4 imageLoad(gimageCubeArray\ " "image" ", ivec3\ " "P" ");"
.HP \w'gvec4\ imageLoad('u
.BI "gvec4 imageLoad(gimage2DMS\ " "image" ", ivec2\ " "P" ", int\ " "sample" ");"
.HP \w'gvec4\ imageLoad('u
.BI "gvec4 imageLoad(gimage2DMSArray\ " "image" ", ivec3\ " "P" ", int\ " "sample" ");"
.SH "PARAMETERS"
.PP
\fIimage\fR
.RS 4
Specify the image unit from which to load a texel\&.
.RE
.PP
\fIP\fR
.RS 4
Specify the coordinate from which to load the texel\&.
.RE
.PP
\fIsample\fR
.RS 4
When present, specifies the sample within the image to load
.RE
.SH "DESCRIPTION"
.PP
\fBimageLoad\fR
loads the texel at the coordinate
\fIP\fR
from the image unit
\fIimage\fR\&. For multi\-sample loads, the sample number is given by
\fIsample\fR\&. When
\fIimage\fR,
\fIP\fR,
\fIsample\fR
identify a valid texel, the bits used to represent the selected texel in memory are converted to a vec4, ivec4, or uvec4 in the manner described in the OpenGL Specification and returned\&.
.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
T}:T{
\fB1\&.10\fR
T}:T{
\fB1\&.20\fR
T}:T{
\fB1\&.30\fR
T}:T{
\fB1\&.40\fR
T}:T{
\fB1\&.50\fR
T}:T{
\fB3\&.30\fR
T}:T{
\fB4\&.00\fR
T}:T{
\fB4\&.10\fR
T}:T{
\fB4\&.20\fR
T}:T{
\fB4\&.30\fR
T}:T{
\fB4\&.40\fR
T}:T{
\fB4\&.50\fR
T}
.T&
l c c c c c c c c c c c c.
T{
imageLoad
T}:T{
\-
T}:T{
\-
T}:T{
\-
T}:T{
\-
T}:T{
\-
T}:T{
\-
T}:T{
\-
T}:T{
\-
T}:T{
✔
T}:T{
✔
T}:T{
✔
T}:T{
✔
T}
.TE
.sp
.SH "SEE ALSO"
.PP
\fBimageStore\fR(),
\fBimageAtomicAdd\fR(),
\fBimageAtomicMin\fR(),
\fBimageAtomicMax\fR(),
\fBimageAtomicAnd\fR(),
\fBimageAtomicOr\fR(),
\fBimageAtomicXor\fR(),
\fBimageAtomicExchange\fR(),
\fBimageAtomicCompSwap\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