Name
texelFetch — perform a lookup of a single texel within a texture
Declaration
gvec4 texelFetch( | gsampler1D sampler, |
| | int P, |
| | int lod); |
gvec4 texelFetch( | gsampler2D sampler, |
| | ivec2 P, |
| | int lod); |
gvec4 texelFetch( | gsampler3D sampler, |
| | ivec3 P, |
| | int lod); |
gvec4 texelFetch( | gsampler2DRect sampler, |
| | ivec2 P); |
gvec4 texelFetch( | gsampler1DArray sampler, |
| | ivec2 P, |
| | int lod); |
gvec4 texelFetch( | gsampler2DArray sampler, |
| | ivec3 P, |
| | int lod); |
gvec4 texelFetch( | gsamplerBuffer sampler, |
| | int P); |
gvec4 texelFetch( | gsampler2DMS sampler, |
| | ivec2 P, |
| | sample sample); |
gvec4 texelFetch( | gsampler2DMSArray sampler, |
| | ivec3 P, |
| | sample sample); |
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 -
If present, specifies the level-of-detail within the texture from which the texel will be fetched.
-
sample -
For multisampled fetches, specifies which sample within the texel from which which will be returned.
Description
texelFetch performs a lookup of a single texel from texture coordinate P in the texture bound to sampler. The array layer is specified in the last component of P for array forms. The lod parameter (if present) specifies the level-of-detail from which the texel will be fetched. The sample specifies which sample within the texel will be returned when reading from a multi-sample texure.
See Also
texelFetch, texture, textureGather, textureGatherOffset, textureGatherOffsets, textureGrad, textureGradOffset, textureLod, 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. https://opencontent.org/openpub/.