Struct CachedSurfaceDescriptor 

pub struct CachedSurfaceDescriptor {
    pub prims: Vec<PrimitiveDescriptor>,
    pub local_valid_rect: PictureRect,
    pub last_updated_frame_id: FrameId,
    pub dep_data: Vec<u8>,
    pub vert_data: Vec<i32>,
}

Uniquely describes the content of this cached surface, in a way that can be (reasonably) efficiently hashed and compared.

Fields

prims: Vec<PrimitiveDescriptor>

List of primitive instance unique identifiers. The uid is guaranteed to uniquely describe the content of the primitive template, while the other parameters describe the clip chain and instance params.

local_valid_rect: PictureRect

Picture space rect that contains valid pixels region of this tile.

last_updated_frame_id: FrameId

The last frame this tile had its dependencies updated (dependency updating is skipped if a tile is off-screen).

dep_data: Vec<u8>

Packed per-prim dependency information

vert_data: Vec<i32>

Per-tile quantized raster-space vert data. VertRanges stored in PrimitiveDescriptor and PrimitiveDependency::Clip index into this buffer.

Implementations

impl CachedSurfaceDescriptor

pub fn new() -> Self

pub fn print(&self, pt: &mut dyn PrintTreePrinter)

Print debug information about this tile descriptor to a tree printer.

pub fn clear(&mut self)

Clear the dependency information for a tile, when the dependencies are being rebuilt.