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imageLoad

Name

imageLoad — load a single texel from an image

Declaration

gvec4 imageLoad( gimage1D image,
int P);
gvec4 imageLoad( gimage2D image,
ivec2 P);
gvec4 imageLoad( gimage3D image,
ivec3 P);
gvec4 imageLoad( gimage2DRect image,
ivec2 P);
gvec4 imageLoad( gimageCube image,
ivec3 P);
gvec4 imageLoad( gbufferImage image,
int P);
gvec4 imageLoad( gimage1DArray image,
ivec2 P);
gvec4 imageLoad( gimage2DArray image,
ivec3 P);
gvec4 imageLoad( gimageCubeArray image,
ivec3 P);
gvec4 imageLoad( gimage2DMS image,
ivec2 P,
int sample);
gvec4 imageLoad( gimage2DMSArray image,
ivec3 P,
int sample);

Parameters

image

Specify the image unit from which to load a texel.

P

Specify the coordinate from which to load the texel.

sample

When present, specifies the sample within the image to load

Description

imageLoad loads the texel at the coordinate P from the image unit image. For multi-sample loads, the sample number is given by sample. When image, P, sample identify a valid texel, the bits used to represent the selected texel in memory are converted to a vec4, ivec4, or uvec4 in the manner described in the OpenGL Specification and returned.

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
imageLoad - - - - - - - -
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