Struct SpriteSet 

pub struct SpriteSet {
    pub models: Vec<Sprite>,
    pub instances: Vec<SpriteInstanceDesc>,
    pub carve_model: Option<usize>,
}

Backend-agnostic sprite description. The facade builds the CPU per-instance draw list and the GPU instanced registry from the same data, so both backends show identical sprites. The host owns content (which models, where, recolouring) — building a recoloured variant is just a second Sprite model with edited kv6.voxels.

Fields

models: Vec<Sprite>

Distinct voxel models (KV6 + base orientation). Instances index into this; their position overrides the model’s.

instances: Vec<SpriteInstanceDesc>

carve_model: Option<usize>

Model the SceneRenderer::carve_active_sprite hotkey edits (GPU only, mirroring the demo’s G-carve). None disables it.