v0.1.15015 Aug 2026·Rendering, Tabs & interface

The GPU rasterises the page's boxes, not just composites them

The compositor blends already-drawn layers on the GPU; this goes a step deeper and RASTERISES the paint list itself on the device. Solid rectangles, rounded rectangles, and border rings - the backgrounds, cards, and outlines that make up most of a page's non-text pixels - are now drawn on the GPU as signed-distance-field shapes in a single pass, anti-aliased and blended in hardware. It is proven against the software rasteriser to within a single level per channel: solid fills, translucent overlaps, and plain borders are bit-for-bit identical, and only rounded corners differ, by one level on a few edge pixels. Verified on screen through the app: a scene of rects, rounded cards, and a border ring rasterised on the GPU and presented straight to the window. The GPU aspect moves 6 to 11; text, images, gradients, and WebGL are still on the software path, so there is a lot of headroom left. The overall holds at 57.

Parity with the reference browser

74overall, as of v0.1.343

Web APIs / DOM surface42

Security architecture66

GPU / graphics acceleration68

DevTools / extensions72

Networking85

Media85

Accessibility85

Real-world site compatibility99

HTML parsing100

CSS parsing + selectors100

Layout: block / flex / grid / tables / writing-modes100

Paint + visual100

JavaScript language100

JavaScript performance (JIT)100

HTML parsing100

What changed 3 changes

Tabs & interface	A GPU rasteriser for the box-model primitives: solid rects, rounded rects, and border rings become instanced signed-distance-field quads drawn in one render pass, with analytic one-pixel-window anti-aliasing that matches the software box filter and source-over hardware blending.
Rendering	Proven within a single level per channel against the software rasteriser - solid fills, translucent source-over, and plain borders bit-exact, rounded-corner anti-aliasing off by one level on a handful of edge pixels - by a parity test that renders the same list both ways and compares every channel.
Tabs & interface	Verified on screen through the app: a scene of rectangles, rounded cards with translucent overlap, and a rounded border ring rasterised entirely on the GPU and presented directly to the window, no software raster in that path.