Module batch 

Structs

BackdropBoundary

Marker emitted per element that has a resolved backdrop-filter.

BatchCache

Per-frame cache that stores the actual QuadInstance and GlyphInstance data emitted by each node in the previous frame. When a node has neither PAINT nor SUBTREE_PAINT the batch builder extends the current batch with the stored instances instead of regenerating them.

BatchRange

Records the primitives produced by a single node (and its subtree) in the previous frame for a specific layer. Used by BatchCache to replay cached output for clean (non-dirty) nodes without rebuilding.

FrameBatch

ImageBatch

LayeredBatch

ShapedTextCache

Cache for shaped text layouts. Keyed on text content + font params + width.

SvgDrawCall

One queued SVG draw. geometry is an Arc pointer into the tessellation cache; translate and scale map the local SVG user units into pixel coordinates, clip_rect is the pixel space scissor rectangle inherited from containing overflow clips, color_tint is a per draw multiplier (used to honor element level color inheritance for currentColor), and opacity is the multiplied element opacity.

Functions

build_render_batch

clear_paint_flags_subtree

Clear PAINT and SUBTREE_PAINT flags on every node in a subtree after a frame has been rendered. Call this after build_render_batch completes. This requires mutable access to the arena; kept as a separate step so walk_for_batch can retain a shared &NodeArena borrow.

emit_select_overlays

Walk the arena and emit select-specific rendering: