emerge

# Changelog

## [0.3.2] - 2026-06-09

### Changed

- Improved rendering cache for complex and mostly unchanged UI.
- `renderer_cache.clean_subtree` options are now `renderer_cache.paint_layer` options.
- Drag scroll works in both axes.
- Improved runtime update performance.
- Improved Wayland scaling and suspend/resume behavior.
- Improved DRM animation timing.
- Added renderer diagnostics for debugging slow updates.

## [0.3.1] - 2026-05-07

### Added

- Added first-class `Emerge.UI.Input.slider/2` with native pointer, keyboard, focus, and custom track/thumb support.

### Changed

- Converged macOS and native runtime update paths around shared tree update processing, input normalization, presentation timing, cursor state, and render timing stats.

### Fixed

- Fixed macOS `mouse_over` behavior so hover-driven state and cursor updates refresh correctly.

## [0.3.0] - 2026-05-06

### Added

- Added layout-aware `Emerge.UI.scale/1` and `Emerge.UI.rotate/1`. These top-level attrs affect layout, hit testing, scroll extents, and sibling placement, while `Emerge.UI.Transform.scale/1` and `Transform.rotate/1` remain paint-only.
- Added animation support for layout-aware scale and rotate through `Animation.animate/4`, `Animation.animate_enter/4`, and `Animation.animate_exit/4`.
- Added native performance diagnostics and benchmark coverage for layout, patching, rendering, and runtime stats.

### Changed

- Changed `Emerge.UI.Size.min/2` and `max/2` into mathematical length combinators. `min(a, b)` now resolves to the smaller length and `max(a, b)` resolves to the larger length. This does not affect normal `px/1`, `fill/0`, `fill/1`, `shrink/0`, or `content/0` usage; only code that used `min/2` or `max/2` as the previous bound wrappers needs migration.
- Changed row/column fill planning to resolve nested `fill/1`, `min/2`, and `max/2` expressions recursively against a shared fill unit. This enables layouts such as `height(min(content(), fill()))`.
- Improved retained layout, render refresh, and event-registry reuse so unchanged subtrees can skip more work across rerenders.
- Improved layout-affecting animation scheduling so sampled layout changes become ordinary dirty paths and unrelated retained subtrees can keep using caches.
- Improved Wayland frame pacing and animation timing.
- Improved render and registry refresh by culling clipped/offscreen scroll viewport subtrees, reusing clean registry payloads, and avoiding cold render-cache seeding on dirty rebuilds.
- Improved direct rendering performance for solid borders, template-image tinting, and simple alpha distribution where benchmarks proved a win.

### Fixed

- Fixed keyed reconciliation ordering for mixed insert/remove updates.
- Fixed exit-animation ghost topology so child, paint-child, and nearby trees stay attached during removal animations.
- Fixed nearby overlay layout reuse and hover/dropdown refresh behavior after subtree removal and reinsertion.
- Fixed single-line text input handling so Enter key handlers can suppress the follow-up text commit.
- Fixed macOS host element id encoding.

## [0.2.1] - 2026-04-17

### Changed

- Hardened native video target and NIF boundary handling, including the `submit_prime` path.
- Reduced CI noise and flakiness by gating heavier hover timing tests, relaxing one tail-clear tolerance, and downgrading routine macOS tree update logs to Elixir debug level.
- Updated macOS release and documentation flow so published HexDocs excludes internal guides and release asset verification reports visible release assets more clearly.

## [0.2.0] - 2026-04-17

### Added

- Added initial macOS support through the external macOS host runtime, using Metal when available and falling back to raster rendering when needed. `video_target` is not supported on macOS in this release.

### Changed

- Corrected wrapped row layout behavior after wrapping. Wrapped rows now respect `center_x` and `align_right` attributes from their children, and existing UIs may see visible layout changes.