interpolateAtSample - sample a varying at the location of a specified sample

       Copyright © 2011-2014 Khronos Group

[FIXME: source]                                    11/18/2024                            INTERPOLATEATSAMPLE(3G)

floatinterpolateAtSample(floatinterpolant,intsample);vec2interpolateAtSample(vec2interpolant,intsample);vec3interpolateAtSample(vec3interpolant,intsample);vec4interpolateAtSample(vec4interpolant,intsample);

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.

       interpolateAtSample - sample a varying at the location of a specified 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.

interpolateAtCentroid(), interpolateAtOffset()

       ┌─────────────────────┬───────────────────────────────────────────────────────────────────────────────────┐
       │                     │        OpenGLShadingLanguageVersion                                            │
       ├─────────────────────┼──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┤
       │ Function            │ 1.10 │ 1.20 │ 1.30 │ 1.40 │ 1.50 │ 3.30 │ 4.00 │ 4.10 │ 4.20 │ 4.30 │ 4.40 │ 4.50 │
       │ Name                │      │      │      │      │      │      │      │      │      │      │      │      │
       ├─────────────────────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┤
       │ interpolateAtSample │  -   │  -   │  -   │  -   │  -   │  -   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │
       └─────────────────────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┘