@group(0) @binding(1) var mySampler: sampler;
@group(0) @binding(2) var myTexture: texture_cube<f32>;

@fragment
fn main(
  @location(0) fragUV: vec2<f32>,
  @location(1) fragPosition: vec4<f32>
) -> @location(0) vec4<f32> {
  var cubemapVec = fragPosition.xyz - vec3<f32>(0.5, 0.5, 0.5);
  return textureSample(myTexture, mySampler, cubemapVec);
}