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)	-	-	-	-	-	-	✔	✔	✔	✔	✔	✔

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. m[blue]http://opencontent.org/openpub/m[].

COPYRIGHT

Copyright © 2011-2014 Khronos Group