Crate telar_renderer_core 

Re-exports

pub use culling::FontMetrics;

pub use culling::extend_bounds;

pub use font_config::FontConfig;

pub use style_pool::hash_path_style;

pub use style_pool::hash_rect_style;

pub use style_pool::hash_text_style;

Modules

culling

dirty

font_config

gpu_sync

Process-global lock serializing GPU/window surface lifecycle against active rendering.

perf

Lightweight per-phase frame timing, gated on the TELAR_PERF env var. When disabled every entry point is a single relaxed-atomic load or an early return, so it is safe to leave the instrumentation compiled into release builds. Enabled it accumulates per-phase durations across both the UI thread (command build/clone) and the render thread (interpret/gpu) and dumps rolling averages via tracing — stdout on desktop, logcat on Android.

style_pool

Structs

BorderRadius

Color

DrawState

Flat draw state tracking clips and transforms. Note: PushLayer and PopLayer commands are intentionally not tracked here; layers are managed outside this struct by the caller.

Gradient

GradientStop

GradientStops

Up to 8 gradient color stops. Fixed-size array preserves the Copy bound.

ImageData

PathData

PathStyle

RectStyle

ScaleScratch

Reusable scratch for scaling draw commands to physical pixels on the software path. Holds the output buffer plus per-frame caches keyed by the source Arc pointer, so a style shared by many commands (the common case for a UI tree) is scaled and heap-allocated once per frame rather than once per command.

Shadow

ShadowLayout

Stroke

Stroke style for drawing primitives. Includes join to control how corners are rendered in paths and rects; for line segments join is unused and defaults to Miter.

TextRun

One inline run of a rich-text paragraph: a slice of text with its own weight, slant, and colour. Paragraph metrics (font size, line height, wrapping, alignment) live on the DrawCommand::RichText base style, so a run overrides only what varies inline (bold, italic, a link’s colour).

TextStyle

Enums

DrawCommand

FillRule

GradientKind

ImageFilter

LineCap

LineJoin

Paint

PathVerb

RendererError

TextAlign

Horizontal alignment of text within its box. Start is the writing-direction start (left in LTR).

Constants

BEZIER_CIRCLE_K

Traits

RenderBackend

Scale

ShapeStyle

Functions

blur_padding

blur_sigma

expand_fill_layers

for_each_with_matrix

Iterates cmds calling f(cmd, cumulative_matrix) for every command. PushMatrix/PopMatrix update the matrix before the callback; all other commands see the matrix that was active when they were emitted.

hash_draw_commands

hash_draw_commands_into

hash_pod_slice

premultiply_rgba

scale_commands

transform_clip_rect

Maps clip rect r (in the currently-active transform’s local space) to window space — the axis-aligned bounds of its four mapped corners. Widgets emit clip rects in their own local space, but the renderer clips in window space, so a clip must be mapped through the active cumulative matrix (scroll/layout translations) to compose correctly.

would_expand_fill_layers

Cheap, allocation-free predicate for whether expand_fill_layers would rewrite any Rect into a synthetic PushLayer opacity triple. F1 damage tracking must treat these hidden layers like real PushLayers (their composite is not confined to the dirty rect), so it queries this first.