Function exr::image::read::read_first_flat_layer_from_file

pub fn read_first_flat_layer_from_file(
    path: impl AsRef<Path>,
) -> Result<Image<Layer<AnyChannels<FlatSamples>>>>

No deep data, no resolution levels, all channels, first layer. Uses parallel decompression and relaxed error handling. Inspect the source code of this function if you need customization.