table of contents
TEXTURELOD(3G) | [FIXME: manual] | TEXTURELOD(3G) |
NAME¶
textureLod - perform a texture lookup with explicit level-of-detailDECLARATION¶
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¶
samplerSpecifies 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 = 0VERSION 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 Group08/26/2014 | [FIXME: source] |