Light | Dark

texelFetchOffset

Name

texelFetchOffset — perform a lookup of a single texel within a texture with an offset

Declaration

gvec4 texelFetchOffset( gsampler1D sampler,
int P,
int lod,
int offset);
gvec4 texelFetchOffset( gsampler2D sampler,
ivec2 P,
int lod,
int offset);
gvec4 texelFetchOffset( gsampler3D sampler,
ivec3 P,
int lod,
int offset);
gvec4 texelFetchOffset( gsampler2DRect sampler,
ivec2 P,
int offset);
gvec4 texelFetchOffset( gsampler1DArray sampler,
ivec2 P,
int lod,
int offset);
gvec4 texelFetchOffset( gsampler2DArray sampler,
ivec3 P,
int lod,
int 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

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

offset

Specifies offset, in texels that will be applied to P before looking up the texel.

Description

texelFetchOffset performs a lookup of a single texel from texture coordinate P in the texture bound to sampler. Before fetching the texel, the offset specified in offset is added to P. offset must be a constant expression. 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 parameter specifies which sample within the texel will be returned when reading from a multi-sample texure.

Version Support

OpenGL Shading Language Version
Function Name 1.10 1.20 1.30 1.40 1.50 3.30 4.00 4.10 4.20 4.30 4.40 4.50
texelFetchOffset - -
texelFetchOffset (gsampler2DRect) - - -
texelFetchOffset (gsampler2DMS, gsampler2DMSArray) - - - -
Think you can improve this page? Edit this page on GitHub.