textureProjLodOffset — perform a texture lookup with projection and explicit level-of-detail and offset
gvec4 textureProjLodOffset( | gsampler2D sampler, |
| vec3 P, | |
| float lod, | |
ivec2 offset); |
gvec4 textureProjLodOffset( | gsampler2D sampler, |
| vec4 P, | |
| float lod, | |
ivec2 offset); |
gvec4 textureProjLodOffset( | gsampler3D sampler, |
| vec4 P, | |
| float lod, | |
ivec3 offset); |
float textureProjLodOffset( | sampler2DShadow sampler, |
| vec4 P, | |
| float lod, | |
ivec2 offset); |
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.
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 component of P in the shadow forms is used as . 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.
| OpenGL ES Shading Language Version | |||
|---|---|---|---|
| Function Name | 1.00 | 3.00 | 3.10 |
| textureProjLodOffset | - | ✔ | ✔ |
texelFetch, texelFetchOffset, texture, textureGrad, textureGradOffset, textureLod, textureLodOffset, textureOffset, textureProj, textureProjGrad, textureProjGradOffset, textureProjLod, textureProjOffset, textureSize
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. https://opencontent.org/openpub/.