Name

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 λbase 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

FunctionVersion 1.10Version 1.20Version 1.30Version 1.40Version 1.50Version 3.30Version 4.00Version 4.10Version 4.20Version 4.30
textureLod--YYYYYYYY
textureLod (gsampler2DRect{Shadow})---YYYYYYY
textureLod (gsamplerCubeArray)------YYYY

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/.