You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: view.rs
    path of file: ./repos/wgpu/wgpu-hal/src/dx12
    
    the code of the file until where you have to start completion: use crate::auxil;
use std::mem;
use winapi::um::d3d12 as d3d12_ty;

pub(crate) const D3D12_DEFAULT_SHADER_4_COMPONENT_MAPPING: u32 = 0x1688;

pub(super) struct ViewDescriptor {
    dimension: wgt::TextureViewDimension,
    pub aspects: crate::FormatAspects,
    pub rtv_dsv_format: d3d12::Format,
    srv_uav_format: Option<d3d12::Format>,
    multisampled: bool,
    array_layer_base: u32,
    array_layer_count: u32,
    mip_level_base: u32,
    mip_level_count: u32,
}

impl crate::TextureViewDescriptor<'_> {
    pub(super) fn to_internal(&self, texture: &super::Texture) -> ViewDescriptor {
        let aspects = crate::FormatAspects::new(texture.
    
    pub(crate) unsafe fn to_uav(&self) -> Option<d3d12_ty::D3D12_UNORDERED_ACCESS_VIEW_DESC> {
        let mut desc = d3d12_ty::D3D12_UNORDERED_ACCESS_VIEW_DESC {
            Format: self.srv_uav_format?,
            ViewDimension: 0,
            u: unsafe { mem::zeroed() },
        };

        match self.dimension {
            wgt::TextureViewDimension::D1 => {
                desc.ViewDimension = d3d12_ty::D3D12_UAV_DIMENSION_TEXTURE1D;
                unsafe {
                    *desc.u.Texture1D_mut() = d3d12_ty::D3D12_TEX1D_UAV {
                        MipSlice: self.mip_level_base,
                    }
                }
            }
            /*
            wgt::TextureViewDimension::D1Array => {
                desc.ViewDimension = d3d12_ty::D3D12_UAV_DIMENSION_TEXTURE1DARRAY;
                *desc.u.Texture1DArray_mut() = d3d12_ty::D3D12_TEX1D_ARRAY_UAV {
                    MipSlice: self.mip_level_base,
                    FirstArraySlice: self.array_layer_base,
                    ArraySize,
                }
            }*/
            wgt::TextureViewDimension::D2 if self.array_layer_base == 0 => {
                desc.ViewDimension = d3d12_ty::D3D12_UAV_DIMENSION_TEXTURE2D;
                unsafe {
                    *desc.u.Texture2D_mut() = d3d12_ty::D3D12_TEX2D_UAV {
                        MipSlice: self.mip_level_base,
                        PlaneSlice: aspects_to_plane(self.aspects),
                    }
                }
            }
            wgt::TextureViewDimension::D2 | wgt::TextureViewDimension::D2Array => {
                desc.ViewDimension = d3d12_ty::D3D12_UAV_DIMENSION_TEXTURE2DARRAY;
                unsafe {
                    *desc.u.Texture2DArray_mut() = d3d12_ty::D3D12_TEX2D_ARRAY_UAV {
                        MipSlice: self.mip_level_base,
                        FirstArraySlice: self.array_layer_base,
                        ArraySize: self.array_layer_count,
                        PlaneSlice: aspects_to_plane(self.aspects),
                    }
                }
            }
            wgt::TextureViewDimension::D3 => {
                desc.ViewDimension = d3d12_ty::D3D12_UAV_DIMENSION_TEXTURE3D;
                unsafe {
                    *desc.u.Texture3D_mut() = d3d12_ty::D3D12_TEX3D_UAV {
                        MipSlice: self.mip_level_base,
                        FirstWSlice: self.array_layer_base,
                        WSize: self.array_layer_count,
                    }
                }
            }
            wgt::TextureViewDimension::Cube | wgt::TextureViewDimension::CubeArray => {
                panic!("Unable to view texture as cube UAV")
            }
        }

        Some(desc)
    }