Crate valo_dl 

The recording layer: DisplayListBuilder records draw commands into an immutable, retained DisplayList, computing the record-time oracle as it goes — per-op device bounds, list bounds, depth-slot counts. The renderer replays lists without re-deriving any of it — the recorder knows everything, so it says so at record time rather than making the renderer rediscover it.

DisplayList is a first-class retained object: immutable, Arc-shared, nestable via DisplayListBuilder::draw_display_list, with a stable DisplayList::id — hosts keep one list per layer and recompose a cheap top-level list each frame; the id + bounds invariants are the future hooks for raster caching and damage rects (deliberately not built yet).

GPU-free and Send + Sync: record on any thread, no Context required.

Structs

Backdrop

Backdrop describes what a backdrop save layer samples from the scene beneath it.

BackdropGroup

BackdropGroup summarizes regions sharing one backdrop-blur key.

DisplayList

DisplayList is an immutable recording of drawing commands.

DisplayListBuilder

DisplayListBuilder records drawing commands into an immutable display list.

FocalCircle

FocalCircle defines the start circle of a radial gradient.

GlyphPos

GlyphPos identifies and positions one glyph within a glyph run.

GradientStop

GradientStop assigns a color to one position along a gradient.

Image

Image is a cheap-to-clone handle to an immutable GPU image.

ImageInner

ImageInner contains the shared resources and metadata behind an Image.

MaskBlur

MaskBlur applies a Gaussian blur to a draw’s coverage mask.

Paint

Paint describes how a drawing operation produces and composites pixels.

Sampling

Sampling controls filtering, mip selection, and behavior outside an image.

Enums

BlendMode

BlendMode controls how source pixels combine with destination pixels.

BlurStyle

BlurStyle controls where blurred coverage appears relative to a shape.

ClipOp

ClipOp controls how a clip shape changes the current clip.

ColorFilter

ColorFilter transforms the pixels produced by a draw or layer.

Filter

Filter controls interpolation between neighboring texels.

ImageFilter

ImageFilter transforms a rasterized draw or layer.

MaskKind

MaskKind controls how a mask layer converts pixels into coverage.

MipmapMode

MipmapMode controls how minified images select mip levels.

Op

Op is one recorded display-list command.

PaintStyle

PaintStyle selects filled geometry or a stroked outline.

Shader

Shader determines the color painted at each point of a drawing operation.

SpreadMode

SpreadMode controls a gradient outside its zero-to-one span.

TileMode

TileMode controls samples outside an image’s bounds.

Constants

MAX_GRADIENT_STOPS

MAX_GRADIENT_STOPS is the largest gradient stored directly in uniforms.