Enum RenderingState 

#[non_exhaustive]
#[repr(u8)]
pub enum RenderingState {
    RenderingSetup = 0,
    BeforeRendering = 1,
    AfterRendering = 2,
    RenderingTeardown = 3,
}

This enum describes the different rendering states, that will be provided to the parameter of the callback for set_rendering_notifier on the slint::Window.

When OpenGL is used for rendering, the context will be current. It’s safe to call OpenGL functions, but it is crucial that the state of the context is preserved. So make sure to save and restore state such as TEXTURE_BINDING_2D or ARRAY_BUFFER_BINDING perfectly.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

RenderingSetup = 0

The window has been created and the graphics adapter/context initialized.

BeforeRendering = 1

The scene of items is about to be rendered.

AfterRendering = 2

The scene of items was rendered, but the back buffer was not sent for display presentation yet (for example GL swap buffers).

RenderingTeardown = 3

The window will be destroyed and/or graphics resources need to be released due to other constraints.

Trait Implementations

impl Clone for RenderingState

fn clone(&self) -> RenderingState

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for RenderingState

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.