textureProjLodOffset - perform a texture lookup with projection and explicit level-of-detail and offset
Contents
Copyright
Copyright © 2011-2014 Khronos Group
[FIXME: source] 11/18/2024 TEXTUREPROJLODOFFSET(3G)
Declaration
gvec4textureProjLodOffset(gsampler1Dsampler,vec2P,floatlod,intoffset);gvec4textureProjLodOffset(gsampler1Dsampler,vec4P,floatlod,intoffset);gvec4textureProjLodOffset(gsampler2Dsampler,vec3P,floatlod,ivec2offset);gvec4textureProjLodOffset(gsampler2Dsampler,vec4P,floatlod,ivec2offset);gvec4textureProjLodOffset(gsampler3Dsampler,vec4P,floatlod,ivec3offset);floattextureProjLodOffset(sampler1DShadowsampler,vec4P,floatlod,intoffset);floattextureProjLodOffset(sampler2DShadowsampler,vec4P,floatlod,ivec2offset);
Description
textureProjLodOffset performs a texture lookup with projection from an explicitly specified
level-of-detail with an offset applied to the texture coordinates before sampling. The texture
coordinates consumed from P, not including the last component of P, are divided by the last component of
P. The resulting 3rd component of P in the shadow forms is used as Dref. After these values are computed,
the texture lookup proceeds as in textureLodOffset(), with lod used to specify the level-of-detail from
which the texture will be sampled and offset used to specifiy the offset, in texels, to be applied to the
texture coordinates before sampling.
Name
textureProjLodOffset - perform a texture lookup with projection and explicit level-of-detail and offset
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 from which to fetch texels.
offset
Specifies the offset, in texels, to be applied to P before fetching texels.
See Also
texelFetch(), texelFetchOffset(), texture(), textureGather(), textureGatherOffset(),
textureGatherOffsets(), textureGrad(), textureGradOffset(), textureLod(), textureLodOffset(),
textureOffset(), textureProj(), textureProjGrad(), textureProjGradOffset(), textureProjLod(),
textureProjOffset(), textureQueryLod(), textureSize()
Version Support
┌──────────────────────┬───────────────────────────────────────────────────────────────────────────────────┐
│ │ OpenGLShadingLanguageVersion │
├──────────────────────┼──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┤
│ Function │ 1.10 │ 1.20 │ 1.30 │ 1.40 │ 1.50 │ 3.30 │ 4.00 │ 4.10 │ 4.20 │ 4.30 │ 4.40 │ 4.50 │
│ Name │ │ │ │ │ │ │ │ │ │ │ │ │
├──────────────────────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┤
│ textureProjLodOffset │ - │ - │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │
└──────────────────────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┘
