TEXTURELOD(3G)

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
 | OpenGL Shading Language Version
Function Name | 1.10 | 1.20 | 1.30 | 1.40 | 1.50 | 3.30 | 4.00 | 4.10 | 4.20 | 4.30 | 4.40 | 4.50
textureLod | - | - | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔
textureLod (gsampler2DRect{Shadow}) | - | - | - | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔
textureLod (gsamplerCubeArray) | - | - | - | - | - | - | ✔ | ✔ | ✔ | ✔ | ✔ | ✔

SEE ALSO

texelFetch(), texelFetchOffset(), texture(), textureGather(), textureGatherOffset(), textureGatherOffsets(), textureGrad(), textureGradOffset(), 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