Enum webrender::composite::CompositorConfig

pub enum CompositorConfig {
    Draw {
        max_partial_present_rects: usize,
        draw_previous_partial_present_regions: bool,
        partial_present: Option<Box<dyn PartialPresentCompositor>>,
    },
    Native {
        compositor: Box<dyn Compositor>,
    },
}

Public interface specified in WebRenderOptions that configures how WR compositing will operate.

Variants

Draw

Let WR draw tiles via normal batching. This requires no special OS support.

Fields

max_partial_present_rects: usize

If this is zero, a full screen present occurs at the end of the frame. This is the simplest and default mode. If this is non-zero, then the operating system supports a form of ‘partial present’ where only dirty regions of the framebuffer need to be updated.

draw_previous_partial_present_regions: bool

If this is true, WR must draw the previous frames’ dirty regions when doing a partial present. This is used for EGL which requires the front buffer to always be fully consistent.

partial_present: Option<Box<dyn PartialPresentCompositor>>

A client provided interface to a compositor handling partial present. Required if webrender must query the backbuffer’s age.

Native

Use a native OS compositor to draw tiles. This requires clients to implement the Compositor trait, but can be significantly more power efficient on operating systems that support it.

Fields

compositor: Box<dyn Compositor>

A client provided interface to a native / OS compositor.

Implementations

impl CompositorConfig

pub fn compositor(&mut self) -> Option<&mut Box<dyn Compositor>>

pub fn partial_present( &mut self, ) -> Option<&mut Box<dyn PartialPresentCompositor>>

Trait Implementations

impl Default for CompositorConfig

fn default() -> Self

Default compositor config is full present without partial present.