pub fn install_offscreen<R: Renderer>(app: &mut App, renderer: R)Expand description
Put renderer, already attached to a
crate::traits::FrameTarget::Offscreen image, into app.
The renderer becomes a non-send render-world resource of type R, and a
system in RenderStage::Render drives it through Renderer each
frame the tick renders: it resizes the image to the viewport’s physical
size and presents when the renderer says the frame changed. Also installs
the extract pipeline the renderer reads the retained scene from.