catbot 65c19ea84a perf(ui): gate per-pixel clip compares behind a flags bit (#50) ... uiResolveScreenPixel ran four float compares against hdr.clipRectPx for every pixel of every UI dispatch, even though the clip rect is the full-surface default {0,0,1e9,1e9} in the overwhelmingly common case. Reserve the high bit of the header flags word (UI_FLAG_CLIP) and have FillHeader set it only when the clip rect is narrower than the surface (extracted into the unit-testable UIRenderer::ClipFlags). The shader gates the compares on the bit; the branch is push-constant-uniform so it never diverges. When the rect covers the surface the skipped compares could never reject an in-surface pixel, so output is pixel-identical. Mirrored on the WebGPU/WGSL path (dom-webgpu.js) for parity. Adds the UIClipFlag CPU test covering the gate decision. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>		2026-06-16 16:57:07 +00:00
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dom-env.js	feat(input): wire native mouse-wheel scroll on Wayland + Win32, normalize all backends to ±1/detent (#32)	2026-06-12 15:02:28 +00:00
dom-webgpu.js	perf(ui): gate per-pixel clip compares behind a flags bit (#50)	2026-06-16 16:57:07 +00:00