2011 Khronos Group
interpolateAtSample 3G
interpolateAtSample sample a varying at the location of a specified sample

## Declaration

float `interpolateAtSample` float interpolant int sample vec2 `interpolateAtSample` vec2 interpolant int sample vec3 `interpolateAtSample` vec3 interpolant int sample vec4 `interpolateAtSample` vec4 interpolant int sample

## Parameters

interpolant

  Specifies the interpolant to be sampled at the location of sample sample.

sample

  Specifies the index of the sample whose location will be used to sample interpolant.

## Description

`interpolateAtSample` returns the value of the input varying interpolant sampled at the location of sample number sample. If multisample buffers are not available, the input varying will be evaluated at the center of the pixel. If sample sample does not exist, the position used to interpolate the input varying is undefined.

## Version Support

#VARTABLECOLS#
#FUNCTABLEHEADER#
interpolateAtSample#newin40#

## See Also

interpolateAtCentroid, interpolateAtOffset

## Copyright

Copyright 2011 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. http://opencontent.org/openpub/.