interpolateAtSample — sample a varying at the location of a specified sample
float interpolateAtSample( | float | interpolant, |
int | sample) ; |
vec2 interpolateAtSample( | vec2 | interpolant, |
int | sample) ; |
vec3 interpolateAtSample( | vec3 | interpolant, |
int | sample) ; |
vec4 interpolateAtSample( | vec4 | interpolant, |
int | sample) ; |
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
.
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.
Function | Version 1.10 | Version 1.20 | Version 1.30 | Version 1.40 | Version 1.50 | Version 3.30 | Version 4.00 | Version 4.10 | Version 4.20 | Version 4.30 |
---|---|---|---|---|---|---|---|---|---|---|
interpolateAtSample | - | - | - | - | - | - | Y | Y | Y | Y |
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