'\" t
.\"     Title: textureProjGradOffset
.\"    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 "TEXTUREPROJGRADOFFSE" "3G" "05/21/2015" "[FIXME: source]" "[FIXME: manual]"
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.\" * MAIN CONTENT STARTS HERE *
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.SH "NAME"
textureProjGradOffset \- perform a texture lookup with projection, explicit gradients and offset
.SH "DECLARATION"
.HP \w'gvec4\ textureProjGradOffset('u
.BI "gvec4 textureProjGradOffset(gsampler1D\ " "sampler" ", vec2\ " "P" ", float\ " "dPdx" ", float\ " "dPdy" ", int\ " "offset" ");"
.HP \w'gvec4\ textureProjGradOffset('u
.BI "gvec4 textureProjGradOffset(gsampler1D\ " "sampler" ", vec4\ " "P" ", float\ " "dPdx" ", float\ " "dPdy" ", int\ " "offset" ");"
.HP \w'gvec4\ textureProjGradOffset('u
.BI "gvec4 textureProjGradOffset(gsampler2D\ " "sampler" ", vec3\ " "P" ", vec2\ " "dPdx" ", vec2\ " "dPdy" ", ivec2\ " "offset" ");"
.HP \w'gvec4\ textureProjGradOffset('u
.BI "gvec4 textureProjGradOffset(gsampler2D\ " "sampler" ", vec4\ " "P" ", vec2\ " "dPdx" ", vec2\ " "dPdy" ", ivec2\ " "offset" ");"
.HP \w'gvec4\ textureProjGradOffset('u
.BI "gvec4 textureProjGradOffset(gsampler3D\ " "sampler" ", vec4\ " "P" ", vec3\ " "dPdx" ", vec3\ " "dPdy" ", ivec3\ " "offset" ");"
.HP \w'float\ textureProjGradOffset('u
.BI "float textureProjGradOffset(sampler1DShadow\ " "sampler" ", vec4\ " "P" ", float\ " "dPdx" ", float\ " "dPdy" ", int\ " "offset" ");"
.HP \w'float\ textureProjGradOffset('u
.BI "float textureProjGradOffset(sampler2DShadow\ " "sampler" ", vec4\ " "P" ", vec2\ " "dPdx" ", vec2\ " "dPdy" ", ivec2\ " "offset" ");"
.HP \w'gvec4\ textureProjGradOffset('u
.BI "gvec4 textureProjGradOffset(gsampler2DRect\ " "sampler" ", vec3\ " "P" ", vec2\ " "dPdx" ", vec2\ " "dPdy" ", ivec2\ " "offset" ");"
.HP \w'gvec4\ textureProjGradOffset('u
.BI "gvec4 textureProjGradOffset(gsampler2DRect\ " "sampler" ", vec4\ " "P" ", vec2\ " "dPdx" ", vec2\ " "dPdy" ", ivec2\ " "offset" ");"
.HP \w'float\ textureProjGradOffset('u
.BI "float textureProjGradOffset(gsampler2DRectShadow\ " "sampler" ", vec4\ " "P" ", vec2\ " "dPdx" ", vec2\ " "dPdy" ", ivec2\ " "offset" ");"
.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
\fIdPdx\fR
.RS 4
Specifies the partial derivative of
\fIP\fR
with respect to window x\&.
.RE
.PP
\fIdPdy\fR
.RS 4
Specifies the partial derivative of
\fIP\fR
with respect to window y\&.
.RE
.PP
\fIoffset\fR
.RS 4
Specifies the offsets, in texels at which the texture will be sampled relative to the projection of
\fIP\fR\&.
.RE
.SH "DESCRIPTION"
.PP
\fBtextureProjGradOffset\fR
performs a texture lookup with projection and explicit gradients and offsets\&. The texture coordinates consumed from
\fIP\fR, not including the last component of
\fIP\fR, are divided by the last component of
\fIP\fR\&. The resulting
3rd
component of
\fIP\fR
in the shadow forms is used as
Dref\&. After these values are computed, the texture lookup proceeds as in
\fBtextureGradOffset\fR(), passing
\fIdPdx\fR
and
\fIdPdy\fR
as gradients, and
\fIoffset\fR
as the offset\&.
.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
l c c c c c c c c c c c c.
T{
textureProjGradOffset
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}
T{
textureProjGradOffset (gsampler2DRect{Shadow})
T}:T{
\-
T}:T{
\-
T}:T{
\-
T}:T{
✔
T}:T{
✔
T}:T{
✔
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✔
T}:T{
✔
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✔
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✔
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✔
T}
.TE
.sp
.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(),
\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