Provided by: opengl-4-man-doc_1.0~svn33624-1_all 
NAME
texelFetchOffset - perform a lookup of a single texel within a texture with an offset
DECLARATION
gvec4 texelFetchOffset(gsampler1D sampler, int P, int lod, int offset);
gvec4 texelFetchOffset(gsampler2D sampler, ivec2 P, int lod, int offset);
gvec4 texelFetchOffset(gsampler3D sampler, ivec3 P, int lod, int offset);
gvec4 texelFetchOffset(gsampler2DRect sampler, ivec2 P, int offset);
gvec4 texelFetchOffset(gsampler1DArray sampler, ivec2 P, int lod, int offset);
gvec4 texelFetchOffset(gsampler2DArray sampler, ivec3 P, int lod, int offset);
PARAMETERS
sampler
Specifies the sampler to which the texture from which texels will be retrieved is
bound.
P
Specifies the texture coordinates at which texture will be sampled.
lod
If present, specifies the level-of-detail within the texture from which the texel will
be fetched.
offset
Specifies offset, in texels that will be applied to P before looking up the texel.
DESCRIPTION
texelFetchOffset performs a lookup of a single texel from texture coordinate P in the
texture bound to sampler. Before fetching the texel, the offset specified in offset is
added to P. offset must be a constant expression. The array layer is specified in the
last component of P for array forms. The lod parameter (if present) specifies the
level-of-detail from which the texel will be fetched. The sample parameter specifies which
sample within the texel will be returned when reading from a multi-sample texure.
VERSION SUPPORT
┌───────────────────┬───────────────────────────────────────────────────────────────────────────────────┐
│ │ OpenGL Shading Language Version │
├───────────────────┼──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┤
│Function │ 1.10 │ 1.20 │ 1.30 │ 1.40 │ 1.50 │ 3.30 │ 4.00 │ 4.10 │ 4.20 │ 4.30 │ 4.40 │ 4.50 │
│Name │ │ │ │ │ │ │ │ │ │ │ │ │
├───────────────────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┤
│texelFetchOffset │ - │ - │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │
├───────────────────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┤
│texelFetchOffset │ - │ - │ - │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │
│(gsampler2DRect) │ │ │ │ │ │ │ │ │ │ │ │ │
├───────────────────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┤
│texelFetchOffset │ - │ - │ - │ - │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │
│(gsampler2DMS, │ │ │ │ │ │ │ │ │ │ │ │ │
│gsampler2DMSArray) │ │ │ │ │ │ │ │ │ │ │ │ │
└───────────────────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┘
SEE ALSO
texelFetch(), texture(), textureGather(), textureGatherOffset(), textureGatherOffsets(),
textureGrad(), textureGradOffset(), textureLod(), textureLodOffset(), textureOffset(),
textureProj(), textureProjGrad(), textureProjGradOffset(), textureProjLod(),
textureProjLodOffset(), textureProjOffset(), textureQueryLod(), textureSize()
COPYRIGHT
Copyright © 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.
http://opencontent.org/openpub/.
COPYRIGHT
Copyright © 2011-2014 Khronos Group
[FIXME: source] 01/03/2018 TEXELFETCHOFFSET(3G)