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.

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

texelFetch

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texelFetch (gsampler2DRect, gsamplerBuffer)

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texelFetch (gsampler2DMS, gsampler2DMSArray)

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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. m[blue]http://opencontent.org/openpub/m[].

COPYRIGHT

Copyright © 2011-2014 Khronos Group