# Raycore.jl Binding TLAS does not exist

**URL:** <https://discourse.julialang.org/t/raycore-jl-binding-tlas-does-not-exist/137193>\
**Category:** Visualization\
**Tags:** raycore\
**Created:** [May 19, 2026, 3:13pm UTC](https://discourse.julialang.org/t/raycore-jl-binding-tlas-does-not-exist/137193 "2026-05-19T15:13:17Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![xor0110](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/xor0110/32/7926_2.png) [@xor0110](https://discourse.julialang.org/u/xor0110)\
**Post date:** [May 19, 2026, 3:13pm UTC](https://discourse.julialang.org/t/raycore-jl-binding-tlas-does-not-exist/137193/1 "2026-05-19T15:13:17Z")

</div>

I’m trying to use the package Raycore, but as I try to follow the basic example on the README:

```julia-auto
using Raycore, GeometryBasics, LinearAlgebra

# Create geometry
mesh = normal_mesh(Sphere(Point3f(0, 0, 2), 1.0f0))

# Build TLAS acceleration structure
tlas = TLAS([mesh], (mi, ti) -> UInt32(mi))

```

I quickly run into the error `Binding TLAS does not exist`. Was there some major API change in the latest version or something?