Struct Swapchain 

pub struct Swapchain { /* private fields */ }

images shown on a canvas

Implementations

impl Swapchain

pub fn rebuild(&mut self) -> Result<()>

the canvas takes the window’s size now

pub fn try_acquire(&mut self) -> Result<TryAcquire>

the image to draw into (the same one until the worker returns to its event loop)

pub fn acquire(&mut self) -> Result<Option<Frame>>

the image to draw into; None while the window has no area

pub fn view(&self, _frame: &Frame) -> &TextureView

the frame’s image as a render target

pub fn texture(&self, _frame: &Frame) -> &Texture

the frame’s image (copies: SwapchainDesc::copy_src)

pub fn present<'a, I: IntoIterator<Item = CommandBuffer<'a>>>( &self, _frame: Frame, cmds: I, ) -> Result<SubmitId>

submit the frame’s commands; the browser shows the image when the worker’s turn ends

pub fn prepare(&mut self) -> Result<bool>

(Linux: the display has answered for the images; here nothing to wait for)

pub fn flush(&self) -> Result<bool>

(Linux: a frame reaches the window after the GPU finished it; here the browser does that)

pub fn busy(&self) -> bool

(Linux: a frame is on its way to the window; here never)

pub fn next_look(&self, retry: u64) -> u64

when a frame that found NotReady should try again: retry (the caller’s time)

pub fn damage(&self, _rects: Option<&[[i32; 4]]>)

(Linux: what the next image changes, for the compositor; here the whole image counts)

pub fn resize(&mut self)

the next acquire takes the window’s size

pub fn set_present_mode(&mut self, _m: PresentMode)

(the browser’s: no present modes)

pub fn present_mode(&self) -> PresentMode

pub fn format(&self) -> Format

pub fn size(&self) -> (u32, u32)

the images’ size

pub fn image_count(&self) -> usize