Struct webrender::picture_graph::PictureGraph

pub struct PictureGraph {
    roots: Vec<PictureIndex>,
    pic_info: Vec<PictureInfo>,
    update_passes: Vec<Vec<PictureIndex>>,
}

A graph of picture dependencies, allowing updates to be processed without recursion by building a list of passes.

Fields

roots: Vec<PictureIndex>

pic_info: Vec<PictureInfo>

update_passes: Vec<Vec<PictureIndex>>

Implementations

impl PictureGraph

pub fn new() -> Self

pub fn reset(&mut self)

pub fn add_root(&mut self, pic_index: PictureIndex)

Add a root picture to the graph

pub fn build_update_passes( &mut self, pictures: &mut [PicturePrimitive], frame_context: &FrameBuildingContext<'_>, )

Build a list of update passes based on the dependencies between pictures

pub fn assign_surfaces( &mut self, pictures: &mut [PicturePrimitive], surfaces: &mut Vec<SurfaceInfo>, tile_caches: &mut FastHashMap<SliceId, Box<TileCacheInstance>>, frame_context: &FrameBuildingContext<'_>, )

Assign surfaces and scale factors to each picture (root -> leaf ordered pass)

pub fn propagate_bounding_rects( &mut self, pictures: &mut [PicturePrimitive], surfaces: &mut [SurfaceInfo], frame_context: &FrameBuildingContext<'_>, )

Propegate bounding rects from pictures to parents (leaf -> root ordered pass)

Trait Implementations

impl Default for PictureGraph

fn default() -> PictureGraph

Returns the “default value” for a type.