问为什么我不能创建R32G32B32_UINT缓冲区的无序访问视图？

EN

D3D11 ERROR: ID3D11Device::CreateUnorderedAccessView:
The format (0x7, R32G32B32_UINT) cannot be used with a Typed Unordered Access View.
[ STATE_CREATION ERROR #2097343: CREATEUNORDEREDACCESSVIEW_INVALIDFORMAT].

void test(ID3D11Device* dev_ctx) {
  D3D11_BUFFER_DESC buff_desc;
  memset(&buff_desc, 0, sizeof(buff_desc));

  buff_desc.BindFlags = D3D11_BIND_SHADER_RESOURCE | D3D11_BIND_UNORDERED_ACCESS;
  buff_desc.ByteWidth = 1024 * 12;
  buff_desc.CPUAccessFlags = 0;
  buff_desc.MiscFlags = 0;
  buff_desc.StructureByteStride = 12;
  buff_desc.Usage = D3D11_USAGE_DEFAULT;

  ID3D11Buffer* buff_ptr = nullptr;
  dev_ctx->CreateBuffer(&buff_desc, nullptr, &buff_ptr);

  if (!buff_ptr)
    return;

  D3D11_UNORDERED_ACCESS_VIEW_DESC uav_desc;
  uav_desc.Format = DXGI_FORMAT_R32G32B32_UINT;
  uav_desc.ViewDimension = D3D11_UAV_DIMENSION_BUFFER;
  uav_desc.Buffer.FirstElement = 0;
  uav_desc.Buffer.Flags = 0;
  uav_desc.Buffer.NumElements = 1024;

  ID3D11UnorderedAccessView* uav_ptr = nullptr;
  dev_ctx->CreateUnorderedAccessView(buff_ptr, &uav_desc, &uav_ptr);

  if (!uav_ptr)
    return;
  }