Function bloom_compile_material_instanced

native/macos/src/lib.rs:1630–1636

(source_ptr: *const u8)

/// surface is consistent — they're useless without the compile FFI.
#[no_mangle]
pub extern "C" fn bloom_compile_material_instanced(source_ptr: *const u8) -> f64 {
    let source = str_from_header(source_ptr);
    match engine().renderer.compile_material_instanced(source) {
        Ok(handle) => handle as f64,
        Err(e) => { eprintln!("[material] instanced compile failed: {:?}", e); 0.0 }
    }
}

/// EN-001 — upload a flat per-instance buffer to GPU memory. Perry's
/// `number[]` is f64-laid-out in memory; this FFI takes the pointer