//! Built-in mip-chain downsampler constant buffer.
//!
//! `_pad*` aligns the slang ConstantBuffer to a 16-byte vec4 boundary,
//! matching the `uint _pad0; uint _pad1; uint _pad2;` fields in
//! `prgpu/shaders/mip_downsample.slang`.
use crateKernelParams;