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
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/.