Name

texelFetch — perform a lookup of a single texel within a texture

Declaration

gvec4 texelFetch(gsampler2D sampler,
 ivec2 P,
 int lod);
 
gvec4 texelFetch(gsampler3D sampler,
 ivec3 P,
 int lod);
 
gvec4 texelFetch(gsampler2DArray sampler,
 ivec3 P,
 int 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

If present, specifies the level-of-detail within the texture from which the texel will be fetched.

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.

Version Support

OpenGL ES Shading Language Version
Function Name 1.00 3.00
texelFetch-✔

See Also

texelFetchOffset, texture, textureGrad, textureGradOffset, textureLod, textureLodOffset, textureOffset, textureProj, textureProjGrad, textureProjGradOffset, textureProjLod, textureProjLodOffset, textureProjOffset, textureSize

Copyright

Copyright © 2011-2013 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.