New Features & Improvements

DOM & Web APIs

• Custom Fonts Support: Added support for custom fonts directory via JSAR_SYSTEM_FONTS_DIR environment variable (#255)
• DocumentFragment API: Complete implementation with ParentNode interface support including cloneNode() and proper insert logic (#245, #249, #247)
• Document API Extensions: Added support for createDocumentFragment() and createComment() methods (#235, #233)
• Script Execution: Implemented proper blocking script execution order for HTMLScriptElement (#251)
• Viewport Meta: Added viewport meta parsing and configuring window width & height (#237)

WebGL Enhancements

• Buffer Operations: Implemented bufferData(target, size, usage) support in WebGL bindings (#248)
• Vertex Operations: Added WebGL vertexAttrib and clearBuffer methods (#205)

CSS & Styling

• CSS Selectors: Exposed selectors text at style rule level (#239)
• CSS Filters: Implemented parsing for CSS filter and backdrop-filter properties with parameter support (#238)
• Overflow Handling: Added support for nested CSS overflow scroll behavior (#229)

3D Graphics & Rendering

• 3D Gaussian Splatting: Implemented PLY loader for 3D Gaussian Splatting models in <model> tag (#223)
• Layered Rendering: Added overflow-based and layer-based rendering for web content instances (#225, #220)
• SDF Text Rendering: Implemented Signed Distance Field text rendering for improved text anti-aliasing (#198)

Developer Tools & Debugging

• Inspector Integration: Added content CDP (Chrome DevTools Protocol) proxy and implemented Log domain (#214)
• Network Monitoring: Added network service to listen for network state changes (#164)

Bug Fixes & Performance

Graphics & Rendering

• Shader Performance: Cached shader's COMPILE_STATUS to avoid blocking calls (#254)
• Buffer Management: Fixed dataSize handling in BufferDataCommandBufferRequest
• Framebuffer Status: Added proper response handling for CheckFramebufferStatus()
• Texture Bindings: Fixed multiple texture bindings per target for rendering units (#215)
• 3D Gaussian Splatting: Optimized GPU performance and compression format to use 1 texel (#212)

Build System & Tooling

• Build Configuration: Fixed target directory configuration when directory doesn't exist
• Package Optimization: Removed deprecated XSML support to reduce package size (#218)

Documentation & Development

• Test Coverage: Added GLSL patcher test case
• Documentation: Updated Rust version notes and navigator.gl type checking guide
• Development Workflow: Updated copilot instructions for npm ci usage

New Features & Improvements

CSS & Styling Enhancements

• CSS Transform Parser: Replaced Rust CSS transform parser with C/C++ implementation for better performance (#176)
• Background Properties: Added support for background-clip, background-origin, and background-repeat properties (#135, #125)
• Background Blend Mode: Added support for background-blend-mode CSS property (#119)
• Background Images: Support for background-image with url() and gradient rendering (#117, #123)
• CSS Parsing: Enhanced CSS parsing with specified classes for background-image

HTML & DOM Features

• HTMLInputElement: Added comprehensive HTMLInputElement support (#148)
• HTMLIFrameElement: Added basic HTMLIFrameElement and JSAR.UniversalRenderingServer for unified rendering debugging (#127)
• Document API: Added document.write and *.writeln methods
• HTML Parsing: Enhanced HTML parsing with support for unquoted attribute values (#103)
• Attribute Parsing: Support for attributes without values and improved PCDATA tag parsing
• HTML Volume: Set HTML volume mask depth to 0.05 and added offset to remove gaps between background and borders

Rendering & Graphics

• Layered Rendering: Support for rendering web content in layers (#172)
• SVG Support: Added SVG image rendering capabilities (#169)
• DPR Support: Implemented device pixel ratio support in web content rendering
• Renderer Refactoring: Complete refactor of the builtin scene renderer
• Render Pipeline: Refined render pipeline and improved offscreen pass with computation graph
• Environment Mapping: Added environment mapping test files and examples
• Layer Calculation: Calculate layer field for each LayoutObject (#174)

Inspector & Debugging

• Chrome DevTools Protocol: Added basic CDP support with Runtime and Example domains (#121)
• WebSocket Support: Added WebSocket support to prepare for Chrome DevTools Protocol integration (#106)
• MDN Compatibility: Implemented MDN-compatible browser compatibility data structure (#108)
• Inspector Logs: Added /:id/logs endpoint for better debugging
• Enhanced Debugging: Support for unified rendering backend debugging

Examples & Testing

• Transmute Browser: Renamed simulator to transmute_browser (#178)
• Rendering Modes: Updated args parsing with support for mono/stereo rendering modes (#159)
• LeaferJS Support: Added support for LeaferJS base usage in fixtures

Build & CI Improvements

• Deployment Permissions: Added write permissions for deploy-website workflow
• Memory Optimization: Specified Node options to increase V8 memory limits
• Lint Fixes: Fixed various lint errors throughout the codebase

What's Changed

• Add WebGPU backend to support the record/submit draw calls on render textures by @yorkie in #94
• client, graphics: fix commandbuffer responses dispatching to the corr… by @yorkie in #96
• Fix HTML parsing to support unquoted attribute values by @Copilot in #103
• Create browser compatibility visualization webpage at /docs by @Copilot in #104
• inspector: Add WebSocket support for Chrome DevTools Protocol integration by @Copilot in #106
• Implement MDN-compatible browser compatibility data structure for JSAR Runtime by @Copilot in #108
• cssom: support parsing background-image and render as a grad effect by @yorkie in #117
• Add support for background-blend-mode and background-clip CSS properties by @Copilot in #119
• Add basic CDP support to inspector with Runtime and MyExample domains by @Copilot in #121
• Add CSS background-origin and background-repeat properties support by @Copilot in #125
• Support extracting gradient data from computed image values for background rendering by @Copilot in #123
• Add CONTRIBUTING.md to guide contributors and copilot by @Copilot in #138
• Implement background-clip: text CSS property support in web content renderer by @Copilot in #135
• Add technical blog posts for community promotion highlighting recent JSAR developments by @Copilot in #136
• Add CDP Domain JSAR.UniversalRenderingServer for unified rendering backend debugging/controls by @Copilot in #127
• client: change all web content to be transparents and add depth-only pass by @yorkie in #144
• Add support for spatial (stereo) image rendering via spatial="stereo" attribute by @Copilot in #131
• dom: move the native fetch() to RuntimeContext to decrease the async handles by @yorkie in #149
• Add HTMLButtonElement support by @Copilot in #147
• Add blog post: "I Added Stereo Rendering to Our Browser Engine — With Copilot" by @Copilot in #152
• Implement toJson() methods for command buffer classes and enhance JSAR vGPU Profiler integration by @Copilot in #146
• Fix createTextPath CJK glyph extraction for mixed CJK/English text by @Copilot in #151
• Adjust click event threshold for XR Device ray interaction from 1px to 5px by @Copilot in #100
• Fix Android crash by enabling C++ exception handling in CMake configuration by @Copilot in #156
• Add basic HTMLIframeElement support for DOM creation and recognition by @Copilot in #162
• Add SVG decoding and rendering support to ImageCodec with optional scaling by @Copilot in #169
• Support rendering web content in layers by @yorkie in #172
• Support single-view XRFrame and update desktop_opengl example for XR rendering modes with improved CLI by @Copilot in #159
• Add HTMLInputElement support to JSAR runtime by @Copilot in #148
• Add layer field to LayoutObject with current-node-based calculation and integrated debugging by @Copilot in #174
• Implement configurable cube map environment renderer with enhanced mouse controls, smooth cubic easing animation, and platform-specific window styling for JSAR desktop simulator by @Copilot in #178
• Replace Rust CSS transform parser with C/C++ implementation supporting negative values by @Copilot in #176
• Add GitHub Action to deploy docs with custom build support to gh-pages by @Copilot in #184
• Support configurable window dragging region for macOS examples with perfect mouse-window alignment by @Copilot in #180
• Refactor docs HTML sections to use VitePress with complete manual documentation by @Copilot in #187
• Release 0.9.0: Core technical improvements and feature additions by @Copilot in #188

Full Changelog: amidala-v0.8.2...amidala-v0.9.0

Fixes

• Fix the commandbuffer responses dispatching in client-side graphics

Improvements

• Optimize rendering pipeline to support offscreen rendering correctly.
• Speed up the graphics initialization of each content process.

Fixes

• Correct the FCP timing for actual writing to the color buffer in the shared render target.

New Features & Improvements

Rendering Enhancements

• Renderer Pipeline Overhaul
  • Replaced single onFrame tick with discrete render passes for finer-grained control over each rendering stage
  • Introduced UnityRenderPassEvent and dispatches per-pass events in OnUnityRenderEvent
  • Added new lifecycle methods (onBeforeRendering, onOpaquesRenderPass, onTransparentsRenderPass, onAfterRendering) in TrEmbedder and TrConstellation
  • Refactored renderer interfaces and updated OpenGL example to utilize new pass methods
• Context Management
  • Introduced new ContextGLHost/ContextGLApp classes to replace legacy context storage
  • Added iterateContentRenderers API for enhanced renderer iteration
  • Implemented framebuffer attachment helpers with improved debug output including stencil state

Inspector & Debugging

• Monitoring Capabilities:
  • Extended inspector with new /json/statistics endpoint for better runtime monitoring
  • Enhanced debug output with stencil buffer state information

DOM Updates

• Content Manipulation
  • Added support for setting textContent property
  • Enhanced DOM element manipulation capabilities

XML Processing

• Parser Improvements
  • Added support for parsing script/style tags as plain character data.
  • Improved XML parsing reliability for web content

Developer Experience

• Tracing & Diagnostics:
  • Added trace support for generate-document capability in threepio
  • Enhanced debugging and development workflow

HTML & CSS Features

• HTML Element Enhancements:
  • Added support for rendering <canvas> elements via Web Canvas API
• CSS Features:
  • Added support for absolute and fixed positioning.
  • Added support for unit in transform property.

Fixes & Optimizations

Bug Fixes

• Connection Management: Fixed invalid connection handling from forked child processes in hived
• Build System: Resolved lint errors in the build process
• Stencil Buffer: Addressed stencil buffer issues through renderer refactoring (#92)

Maintenance

• Dependencies: Upgraded jsar-dom version for improved compatibility
• Animations: Updated animation system components

Fix an issue which causes the failure to send the messages to hived, commits are:

• hived: ignore the invalid connection from forked child processes

New Features & Improvements

Rendering Enhancements

• WebGL Improvements:
  • Optimized WebGL texture handling with anisotropic filtering.
  • Improved support for the EXT_texture_filter_anisotropic extension.
  • Enhanced WebGL context attributes for better XR compatibility.

DOM Updates

• Event Handling:
  • Added new event constructor types including MouseEvent, PointerEvent, and XRSessionEvent.
  • Enhanced EventTarget to provide detailed event type mappings and dispatching.
• Document Features:
  • Introduced Document.timeline for animation timelines.
  • Enhanced Document.appendStyleSheet() to manage styles dynamically.

HTML Enhancements

• Image Element:
  • Improved <img> element to handle onload and onerror events asynchronously.
  • Optimized image decoding with fallback mechanisms for error handling.
• Web Content Updates:
  • Added support for logical dimensions (logicalWidth and logicalHeight) for web content rendering.
  • Improved device pixel ratio handling in WebContent.

Fixes & Optimizations

Performance Optimizations

• Rendering Pipeline:
  • Optimized text and element rendering by marking dirty nodes and reducing unnecessary updates.
  • Improved layout computation efficiency for dynamic content.
• Event Dispatch:
  • Fixed hit testing for mouse events to handle mouseleave and mouseout scenarios properly.

Bug Fixes

• Fixed issues with CSSStyleDeclaration caching to ensure seamless style updates.
• Resolved memory leaks in image decoding processes.
• Addressed rendering bugs for logical dimensions in WebContent.
• Fixed service memory leaks in destroying content processes.
• Added maximum size for the image and texture at client-side and server-side to prevent out of memory issues.
• Fixed the resource caching issues, now the caching follows the standard HTTP caching rules.