gpui

Sonora's fork of GPUI, the GPU-accelerated UI framework behind Zed.

This fork extends upstream GPUI with additional rendering, animation, and debugging capabilities:

• Visual effects

  • Styled::text_blur — Gaussian blur baked into glyph rasterization and cached in the atlas
  • Styled::backdrop_blur — CSS-style backdrop-filter: blur()
  • Styled::blur — blur an element and its subtree as a composited layer
  • Edge and side fading for composited layers

• Paint-only transforms

  • Styled::layer_scale — scale an element and its subtree without affecting layout
  • Styled::layer_scale_origin — choose the origin of a layer scale
  • Styled::layer_translate — translate a composited layer without affecting layout or hitboxes
  • Fractional/subpixel transforms suitable for smooth spring animations

• Subpixel rendering

  • Optional pixel-snapping control for subtrees via Window::with_pixel_snapping
  • Smooth fractional positioning without layout positions being rounded to device pixels

• Text rendering

  • Proper font-weight handling in the cosmic-text backend
  • Variable-font wght axis support
  • Weight-aware font fallback
  • Improved colour emoji font detection and rendering

• Profiling and debugging

  • Extended frame profiler with layout, prepaint, and paint timings
  • View render/cache/dirty statistics
  • Visual surface repaint highlighting
  • Notify/re-render diagnostics
  • Environment-controlled profiler and repaint overlays

• Platform and rendering fixes

  • Layer-filter support across WGPU, Metal, and DirectX renderers
  • Improved Wayland fractional-scaling behaviour
  • Fixes for half-device-pixel window edges and backdrop artefacts
  • Additional renderer fixes for filtered and transformed layers

Licence

Apache-2.0, inherited from Zed. See LICENSE-APACHE.