Function image 

pub fn image<M>(source: impl IntoImageSource<M>) -> Image

Draw an image from any ImageSource: a staged asset name, encoded bytes, or a decoded Bitmap.

image(res::images::cover)                 // a staged asset, as it always was
image(png_bytes)                          // Vec<u8> / Arc<Vec<u8>> the app fetched or picked
image(&bitmap)                            // one decode, shared by several nodes
image(move || shot.get())                 // reactive: swapping the source patches in place

Bytes and decoded sources need Cap::ImageDecode; a backend without it draws nothing rather than guessing. A name still resolves the way it always has, on every backend.