# `Nx.Vulkan.ShaderTemplate.FamilySpec`
[🔗](https://github.com/borodark/nx_vulkan/blob/main/lib/nx_vulkan/shader_template.ex#L24)

Per-family hooks for the templated chain shader.

All expressions reference local variable `qi` (current f32 position).

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*Consult [api-reference.md](api-reference.md) for complete listing*