2011 Khronos Group
textureLod 3G
textureLod perform a texture lookup with explicit level-of-detail

## Declaration

gvec4 `textureLod` gsampler1D sampler float P float lod gvec4 `textureLod` gsampler2D sampler vec2 P float lod gvec4 `textureLod` gsampler3D sampler vec3 P float lod gvec4 `textureLod` gsamplerCube sampler vec3 P float lod float `textureLod` sampler1DShadow sampler vec3 P float lod float `textureLod` sampler2DShadow sampler vec4 P float lod gvec4 `textureLod` gsampler1DArray sampler vec2 P float lod gvec4 `textureLod` gsampler2DArray sampler vec3 P float lod float `textureLod` sampler1DArrayShadow sampler vec3 P float lod gvec4 `textureLod` gsamplerCubeArray sampler vec4 P float lod

## 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

  Specifies the explicit level-of-detail

## Description

`textureLod` performs a texture lookup at coordinate P from the texture bound to sampler with an explicit level-of-detail as specified in lod. lod specifies λ base and sets the partial derivatives as follows:

δ u δ x = 0 , δ v δ x = 0 , δ w δ x = 0 δ u δ y = 0 , δ v δ y = 0 , δ w δ y = 0

## Version Support

#VARTABLECOLS#
#FUNCTABLEHEADER#
textureLod#newin13#
textureLod (gsampler2DRect{Shadow})#newin14#
textureLod (gsamplerCubeArray)#newin40#

## See Also

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

## Copyright

Copyright 2011 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/.