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dead -> live #166

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Merged
catilac merged 1 commit into from
Jun 10, 2026
Merged

dead -> live #166

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8 changes: 5 additions & 3 deletions crates/processing_render/src/particles/pack.wgsl
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Original file line number Diff line number Diff line change
Expand Up @@ -17,7 +17,8 @@ struct MeshCullingData {
aabb_center: vec3<f32>,
_pad: f32,
aabb_half_extents: vec3<f32>,
dead: f32,
// > 0.0 = render, <= 0.0 = skip in preprocessing.
life: f32,
}

struct PackParams {
Expand Down Expand Up @@ -106,8 +107,9 @@ fn pack(@builtin(global_invocation_id) gid: vec3<u32>) {
mesh_culling_buffer[slot].aabb_center = vec3<f32>(0.0, 0.0, 0.0);
mesh_culling_buffer[slot].aabb_half_extents = vec3<f32>(1.0, 1.0, 1.0);
#ifdef HAS_DEAD
mesh_culling_buffer[slot].dead = dead[i];
// dead[i]: 0.0 = alive, nonzero = dead -> life > 0.0 renders.
mesh_culling_buffer[slot].life = select(1.0, 0.0, dead[i] != 0.0);
#else
mesh_culling_buffer[slot].dead = 0.0;
mesh_culling_buffer[slot].life = 1.0;
#endif
}
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