an class="lineno">   19</span>  wgpu::Device &amp;device;</div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno">   20</span>  wgpu::BindGroupLayout bg_layout;</div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno">   21</span>  wgpu::ComputePipeline cmp_pl_prefix_sum_sub;</div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno">   22</span>  wgpu::ComputePipeline cmp_pl_add_block_sums;</div>
<div class="line"><a id="l00023" name="l00023"></