Ultralight v1.3.0 Release Notes

Changelog

Major Improvements

• Rewrite CPU renderer to be faster and more accurate (parallel engine built on Skia internals).
• Add support for Xbox, PS4, and PS5 platforms.
• Improve text rendering accuracy with more intelligent snapping and hinting.
• Improve font scaling accuracy at various device scales.
• Improve box-shadow rendering accuracy and performance.
• Improve performance of layout and JavaScript execution using mimalloc.
• Improve performance of JavaScript garbage-collector, reduce per-frame stalls.
• Improve consistency of CPU and GPU renderers (both now blend in sRGB).
• Add memory profiler and memory statistics tracking.
• Add support for gamepad input devices.
• Add support for remote web inspector.
• Add support for multiple windows to AppCore.
• Add support for rendering only a subset of Views.
• Add support for dashed strokes to CPU renderer.
• Add support for SVG onclick and other events that require path picking.
• Add support for HTML5 Video / Audio (experimental) via GStreamer/FFmpeg (disabled by default).
• Update user-agent string to reflect proper Safari / WebKit version.
• Update to latest CA certificate chain.
• Unify build scripts and toolchain.

Major API Changes

• Unify API to use RefPtr<> everywhere (instead of Ref<> class)
• Unify API to use String everywhere (instead of String16, String8, etc.).
• Make String class use String8 natively (utf-8 is now native representation instead of utf-16).
• Make all enums use 'enum class'
• Resources now load via FileSystem API instead of fopen().
• FileSystem now required to be defined in Platform API before creating Renderer.
• Buffer class now accomodates memory-mapped files and destruction callbacks.
• FileSystem interface has been reorganized to use new Buffer API.
• Portions of Config have been moved to ViewConfig (now certain options can be set per-View).
• App::Quit() must now be called manually when using AppCore API.
• Add Bitmap::LockPixelsSafe() and LockedPixels<> utility class to manage lifetimes.
• Add WebKitVersionString() to query corresponding WebKit version.
• Extend AppCore API to enable multi-window support.
• Re-organize C API into logical header files.
• Add Renderer::StartRemoteInspectorServer
• Add Renderer::SetGamepadDetails
• Add Renderer::FireGamepadEvent
• Add Renderer::FireGamepadAxisEvent
• Add Renderer::FireGamepadButtonEvent
• Add Renderer::RenderOnly
• Modify Renderer::CreateView signature (options moved to ViewConfig param)
• Add View::device_scale
• Add View::set_device_scale
• Add View::is_accelerated
• Add View::is_transparent
• Add View::JavaScriptVM
• Rename View::inspector to View::CreateLocalInspectorView
• Modify View::LockJSContext return value (now returns RefPtr<> to manage lifetime)
• Add ViewListener::OnCreateInspectorView
• Add ViewListener::OnRequestClose
• Add WindowListener::OnKeyEvent
• Add WindowListener::OnMouseEvent
• Add WindowListener::OnScrollEvent

Major Bugfixes

• Fix issue managing clip in CPU and GPU renderers.
• Fix issue blending alpha in CPU renderer.
• Fix issue stroking paths in CPU renderer.
• Fix issue drawing glyphs with complex transformations.
• Fix issue drawing radial gradients with CPU renderer.
• Fix issue drawing gradients with more than 12 stops.
• Fix issue running library off the main thread on macOS.
• Fix issue rendering paths that begin with an ArcTo command.
• Fix issue where BGRA byte order was not used on all platforms.
• Fix issue painting dropdown menus.
• Fix issue calculating CSS button height.
• Fix issue displaying box-shadows on native inputs.
• Fix issue displaying context-menu in web inspector.
• Fix issue writing LocalStorage database on Windows.
• Fix issue with KeyboardEvent.key in JavaScript always returning null.
• Fix issue with LoadListener::OnBeginLoading not passing correct URL.
• Fix issue with LoadListener::OnFailLoading not being fired on non-200 HTTP status codes.
• Fix issue resizing windows with GPU acceleration enabled (AppCore).
• Fix issue calling Window::SetTitle with Unicode strings (AppCore).
• Fix issue with anti-aliasing when GPU acceleration is enabled on Linux (AppCore).
• Fix issue with automatic DPI switching on Windows (AppCore).
• Fix security issue allocating very large render layers.
• Fix major performance bug in cURL network code.
• Fix memory leak loading certain File URLs.
• Fix memory leak when constructing JSString from JSStringRef (AppCore).
• Fix various crashes and buffer overruns in Bitmap class.
• Fix crash loading certain Data URLs.
• Fix crash when Config::bitmap_alignment is 0.
• Fix crash when encountering certain text-encodings.
• Fix crash when encountering certain JavaScript code.
• Fix crash in SQLite database code.
• Fix crash at process shutdown.

Useful Links

Website

ultralig.ht

Support Docs

docs.ultralig.ht

C++ API

github.com/ultralight-ux/Ultralight-API

- Ultralight Team