draw optimizations

2026-03-08 23:30:11 +02:00
parent fdcbb5d6f4
commit ac35360d60
18 changed files with 875 additions and 566 deletions
@@ -50,6 +50,17 @@ type World struct {

 	renderState  rendererIncrementalState
 	derivedCache map[derivedStyleKey]StyleID
+
+	// scratch buffers for hot render path (single goroutine assumption).
+	scratchDrawItems   []drawItem
+	scratchWrapShifts  []wrapShift
+	scratchLineSegs    []lineSeg
+	scratchLineSegsTmp []lineSeg
+
+	// candidate dedupe scratch (hot path for plan building).
+	candStamp         []uint32
+	candEpoch         uint32
+	scratchCandidates []MapItem
 }

 // NewWorld constructs a new world with the given real dimensions.