#![cfg_attr(target_arch = "spirv", no_std)]

use spirv_std::spirv;

pub fn scale_kernel_logic(idx: usize, input: &[f32], output: &mut [f32], scale: f32) {
    if idx < input.len() {
        output[idx] = input[idx] * scale;
    }
}

#[spirv(compute(threads(64)))]
pub fn scale_kernel(
    #[spirv(global_invocation_id)] id: spirv_std::glam::UVec3,
    #[spirv(storage_buffer, descriptor_set = 0, binding = 0)] input: &[f32],
    #[spirv(storage_buffer, descriptor_set = 0, binding = 1)] output: &mut [f32],
    #[spirv(push_constant)] scale: &f32,
) {
    scale_kernel_logic(id.x as usize, input, output, *scale);
}