2012 Khronos Group
textureOffset 3G
textureOffset perform a texture lookup with offset

## Declaration

gvec4 `textureOffset` gsampler1D sampler float P int offset [float bias] gvec4 `textureOffset` gsampler2D sampler vec2 P ivec2 offset [float bias] gvec4 `textureOffset` gsampler3D sampler vec3 P ivec3 offset [float bias] gvec4 `textureOffset` gsampler2DRect sampler vec2 P ivec2 offset float `textureOffset` sampler2DRectShadow sampler vec3 P ivec2 offset float `textureOffset` sampler1DShadow sampler vec3 P int offset [float bias] float `textureOffset` sampler2DShadow sampler vec4 P ivec2 offset [float bias] gvec4 `textureOffset` gsampler1DArray sampler vec2 P int offset [float bias] gvec4 `textureOffset` gsampler2DArray sampler vec3 P ivec2 offset [float bias] float `textureOffset` sampler1DArrayShadow sampler vec3 P int offset float `textureOffset` sampler2DArrayShadow sampler vec4 P vec2 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.

offset

  Specifies offset, in texels that will be applied to P before looking up the texel.

## Description

`textureOffset` performs a texture lookup at coordinate P from the texture bound to sampler with an an additional offset, specified in texels in offset that will be applied to the (u, v, w) texture coordinates before looking up each texel. The offset value must be a constant expression. A limited range of offset values are supported; the minimum and maximum offset values are implementation-dependent and may be determined by querying `GL_MIN_PROGRAM_TEXEL_OFFSET` and `GL_MAX_PROGRAM_TEXEL_OFFSET`, respectively.

Note that offset does not apply to the layer coordinate for texture arrays. Also note that offsets are not supported for cube maps.

## Version Support

#VARTABLECOLS#
#FUNCTABLEHEADER#
textureOffset#newin13#
textureOffset (gsampler2DRect{Shadow})#newin14#

## See Also

texelFetch, texelFetchOffset, texture, textureGather, textureGatherOffset, textureGatherOffsets, textureGrad, textureGradOffset, textureLod, textureLodOffset, textureProj, textureProjGrad, textureProjGradOffset, textureProjLod, textureProjLodOffset, textureProjOffset, textureQueryLod, textureSize

## Copyright

Copyright 2011-2012 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/.