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Perform a texture lookup with explicit level-of-detail and offset.


gvec4 textureLodOffset( gsampler1D sampler, float P, float lod, int offset );
gvec4 textureLodOffset( gsampler2D sampler, vec2 P, float lod, ivec2 offset );
gvec4 textureLodOffset( gsampler3D sampler, vec3 P, float lod, ivec3 offset );
float textureLodOffset( sampler1DShadow sampler, vec3 P, float lod, int offset );
float textureLodOffset( sampler2DShadow sampler, vec3 P, float lod, ivec2 offset );
gvec4 textureLodOffset( gsampler1DArray sampler, vec2 P, float lod, int offset );
gvec4 textureLodOffset( gsampler2DArray sampler, vec3 P, float lod, ivec2 offset );
float textureLodOffset( sampler1DArrayShadow sampler, vec3 P, float lod, int offset );


sampler - Specifies the sampler to which the texture from which texels will be retrieved is bound.
P - Specifies the texture coordinates at which the texture will be sampled.
lod - Specifies the explicit level-of-detail from which texels will be fetched.
offset - Specifies the offset that will be applied to P before texels are fetched.


 textureLodOffset performs a texture lookup at coordinate P from the texture bound to sampler with an explicit level-of-detail as specified in lod . Behavior is the same as in textureLod except that before sampling, offset is added to P .

Version Support[edit]

textureLodOffset 1.3+
textureLodOffset (gsampler2DRect{Shadow}) 1.4+
textureLodOffset (gsamplerCubeArray) 4.0+

See Also[edit]

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


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/.