Name
textureProjLod — perform a texture lookup with projection and explicit level-of-detail
Declaration
gvec4 textureProjLod( | gsampler1D | sampler, |
| vec2 | P, |
| float | lod) ; |
gvec4 textureProjLod( | gsampler1D | sampler, |
| vec4 | P, |
| float | lod) ; |
gvec4 textureProjLod( | gsampler2D | sampler, |
| vec3 | P, |
| float | lod) ; |
gvec4 textureProjLod( | gsampler2D | sampler, |
| vec4 | P, |
| float | lod) ; |
gvec4 textureProjLod( | gsampler3D | sampler, |
| vec4 | P, |
| float | lod) ; |
float textureProjLod( | sampler1DShadow | sampler, |
| vec4 | P, |
| float | lod) ; |
float textureProjLod( | sampler2DShadow | 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 from which to fetch texels.
Description
textureProjLod
performs a texture lookup with projection from an explicitly specified level-of-detail. 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 textureLod,
with lod
used to specify the level-of-detail from which the texture will be sampled.
See Also
texelFetch,
texelFetchOffset,
texture,
textureGather,
textureGatherOffset,
textureGatherOffsets,
textureGrad,
textureGradOffset,
textureLod,
textureLodOffset,
textureOffset,
textureProj,
textureProjGrad,
textureProjGradOffset,
textureProjLodOffset,
textureProjOffset,
textureQueryLod,
textureSize
Copyright
Copyright © 2011 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/.