'\" t
.\"     Title: textureQueryLod
.\"    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 "TEXTUREQUERYLOD" "3G" "01/03/2018" "[FIXME: source]" "[FIXME: manual]"
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.SH "NAME"
textureQueryLod \- compute the level\-of\-detail that would be used to sample from a texture
.SH "DECLARATION"
.HP \w'vec2\ textureQueryLod('u
.BI "vec2 textureQueryLod(gsampler1D\ " "sampler" ", float\ " "P" ");"
.HP \w'vec2\ textureQueryLod('u
.BI "vec2 textureQueryLod(gsampler2D\ " "sampler" ", vec2\ " "P" ");"
.HP \w'vec2\ textureQueryLod('u
.BI "vec2 textureQueryLod(gsampler3D\ " "sampler" ", vec3\ " "P" ");"
.HP \w'vec2\ textureQueryLod('u
.BI "vec2 textureQueryLod(gsamplerCube\ " "sampler" ", vec3\ " "P" ");"
.HP \w'vec2\ textureQueryLod('u
.BI "vec2 textureQueryLod(gsampler1DArray\ " "sampler" ", float\ " "P" ");"
.HP \w'vec2\ textureQueryLod('u
.BI "vec2 textureQueryLod(gsampler2DDArray\ " "sampler" ", vec2\ " "P" ");"
.HP \w'vec2\ textureQueryLod('u
.BI "vec2 textureQueryLod(gsamplerCubeArray\ " "sampler" ", vec3\ " "P" ");"
.HP \w'vec2\ textureQueryLod('u
.BI "vec2 textureQueryLod(gsampler1DShadow\ " "sampler" ", float\ " "P" ");"
.HP \w'vec2\ textureQueryLod('u
.BI "vec2 textureQueryLod(gsampler2DShadow\ " "sampler" ", vec2\ " "P" ");"
.HP \w'vec2\ textureQueryLod('u
.BI "vec2 textureQueryLod(gsamplerCubeShadow\ " "sampler" ", vec3\ " "P" ");"
.HP \w'vec2\ textureQueryLod('u
.BI "vec2 textureQueryLod(gsampler1DArrayShadow\ " "sampler" ", float\ " "P" ");"
.HP \w'vec2\ textureQueryLod('u
.BI "vec2 textureQueryLod(gsampler2DArrayShadow\ " "sampler" ", vec2\ " "P" ");"
.HP \w'vec2\ textureQueryLod('u
.BI "vec2 textureQueryLod(gsamplerCubeArrayShadow\ " "sampler" ", vec3\ " "P" ");"
.SH "PARAMETERS"
.PP
\fIsampler\fR
.RS 4
Specifies the sampler to which the texture whose level\-of\-detail will be queried is bound\&.
.RE
.PP
\fIP\fR
.RS 4
Specifies the texture coordinates at which the level\-of\-detail will be queried\&.
.RE
.SH "DESCRIPTION"
.PP
\fIAvailable only in the fragment shader\fR,
\fBtextureQueryLod\fR
computes the level\-of\-detail that would be used to sample from a texture\&. The mipmap array(s) that would be accessed is returned in the
\fIx\fR
component of the return value\&. The computed level\-of\-detail relative to the base level is returned in the
\fIy\fR
component of the return value\&.
.PP
If called on an incomplete texture, the result of the operation is undefined\&.
.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
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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
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{
textureQueryLod
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 1
.SH "SEE ALSO"
.PP
\fBtexelFetch\fR(),
\fBtexelFetchOffset\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(),
\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