Platform/2011-Q4-Goals

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General Goals

GFX

  • [ON TRACK] Fennec layers acceleration
    • Use OpenGL ES on at least a subset of Android hardware
  • [ON TRACK] CSS 3 Font Spec Implementation
  • [ON TRACK] Azure - Cairo backend, used for Canvas
    • Land on mozilla-central preffed on
  • [ON TRACK] Thebes wrapper for Azure
    • Land on mozilla-central preffed on for Direct2D
  • [ON TRACK] Skia backend for Azure
    • Landed and able to be turned on for canvas
    • Demoable for general content (not just canvas) - not necessarily demoable from mozilla-central
  • [ON TRACK] Texture sharing for WebGL
    • On OSes where it's supported, enable cross-process WebGL by sharing textures between content and chrome processes
  • Other important Q4 work
    • Electrolysis Accelerated Layers
      • Evaluate current status
      • Finish Direct3D 10 and Mac OS X OpenGL layers implementation
      • For non-sandboxed processes only
    • Continue using telemetry
    • Imagelib work on memory usage and efficiency
    • Windows 7 font rendering survey via Test Pilot
    • Multiple GPU support on Mac OS X
    • WebGL improvements
      • Anti-aliasing
      • ARB_robustness / EGL_LOST_CONTEXT
      • Auditing remaining failing conformance tests


Layout

  • [ON TRACK] Complete Mobile Readability project (Phase 1 & make decision on Phase 2)
    • some things now working but multiple issues to still work through.
  • [ON TRACK] Diagnostic tools for text and font memory usage in about:memory
  • [ON TRACK] Graphite Font Layout system
  • [ON TRACK] Multi-column Compliance (de-prefixing)
  • [ON TRACK] Complete SVG migration to DisplayList (Performance)
  • [ON TRACK] Implement CSS spec for flex-box
  • [ON TRACK] Selection bit - Move from Layout to Content - Mutation events update DOM (619273)
  • [ON TRACK] Complete View class removal (bug 337801)
  • [ON TRACK] Page Break Support
  • [AT RISK] CSS Ruby on mozilla-central
    • not currently assigned


Video

  • [ON TRACK] MediaStream infrastructure landed on mozilla-central with Worker-based processing enabled and some media element integration
  • [ON TRACK] libcubeb sound library replacing libsydneyaudio on mozilla-central
  • [ON TRACK] fullscreen API enabled on mozilla-central
  • [ON TRACK] direct pushing of video frames to compositor thread for e10s
  • [ON TRACK] eliminate unnecessary copy with video decoder API changes


DOM

  • [ON TRACK] Close the gap between what can be expressed in WebIDL and what our IDL tooling supports
  • [ON TRACK] Make cycles involving weak maps and the DOM not leak
  • [ON TRACK] JS Compartment per global (carryover from last quarter)
  • [ON TRACK] Have a real plan for what the new DOM bindings will look like (exact wording tbd)
  • [ON TRACK] IndexedDB version scheme change done
  • [ON TRACK] Initial version of IndexedDB file support patch landed
  • [ON TRACK] Support deleting databases in IndexedDB
  • [ON TRACK] Review and land View Source rewrite
  • [ON TRACK] Add support for the new mutation observer proposal (to replace DOM Mutation Event support eventually)
  • [ON TRACK] Add support for (callable) event constructors


WebAPI

  • [ON TRACK] Support taking a picture with an input element in a webpage (mobile and desktop)


JS

  • [ON TRACK] Land incremental GC.
  • [ON TRACK] Land Harmony modules.
  • [ON TRACK] Land support for JS profiler.
  • [ON TRACK] Shrink JSObject to ~5 words.

Accessibility

  • [ON TRACK] Mobile: Accessibility enabled on FF android builds
  • [ON TRACK] E10S: phase 2 -> parity single process
  • [ON TRACK] Canvas accessibility
  • [ON TRACK] Improve accessible tree updating [bug 690417]
  • Other activities: Addtional Telemetry, B2G test framework collab.

Multi-Process

  • Continue regular tracking and resolution of short-term goals
  • Remove the need for the --enable-e10s-compat build flag, so users can simply set a pref in Firefox to get multi-process tabs. Note that some or many features still may not work this quarter.
  • Get windowless and windowed plugins working on all platforms.
  • Identify which addons must continue to work to get 80% of users multi-process tabs
  • Develop a plan for addon compatibility with content processes. (This may involve a combination of Firefox compatibility shims, porting addons to the Jetpack SDK, manual rewriting, or automatic rewriting).
  • Measure the memory usage of multiple content processes and identify wasted space and a plan to correct any issues.
  • Identify remaining issues which need input from the UX team for mobile and desktop, including panning responsiveness/checkerboarding tradeoffs (primarily mobile) and misbehaving/crashing content UI (desktop)

Perf

  • Valgrind developer ROM for pandaboard or Nexus S
  • linux "perf"-counters in zippity(depends on above ROM to have perf support in kernel)
  • Bug 662444: exit(0) "immediate" shutdown prototype and a plan to land it
  • Bug 686805: Incremental decompression for libxul on Android
  • Startup-ordered binary on Windows
  • 0 fennec sqlite fsyncs on first startup

Networking

  • [ON TRACK] Improve SSL performance and responsiveness by fixing bug 511393. This is also important for SPDY.
  • [ON TRACK] Add support for high-resolution timers on Windows, bug 676349.
  • [ON TRACK] Improve dual-stack IPv6 experience by implementing an effective form of "happy eyeballs" IPv6 auto-detection at TCP open. This means resolving bug 684893.
  • [ON TRACK] Have full implementation of current WebSockets spec (hopefully final) implemented and in the tree in a shippable state.
  • [ON TRACK] Land pipelining improvements from Patrick McManus.
  • [ON TRACK] Land SPDY implementation, bug 528288. OK if it remains pref'd off.
  • [ON TRACK] Work towards an effective mobile disk cache implementation.
    • Create a specific set of questions that need answering in order to make a plan.
    • Create system with which to measure cache performance locally.
      • Some microbenchmarks have been set up; WIP to analyze and understand results. See Necko/MobileCache/MicroBenchmarks for status
      • WIP for a test-driver to fetch whole pagesets (much like Talos, but necko-only)
    • Create a plan for a mobile disk cache based gathered data.
  • [ON TRACK] Improve App Cache support by resolving bug 538595 and bug 538588.
  • [ON TRACK] Resolve all networking security bugs that received a designation of sg:moderate or higher more than six weeks ago. This will become a permanent goal for the group.


Mobile

  • NPAPI/Flash on Honeycomb integration and support
  • Native front end prototype
  • Automated Unit & Talos tests should be less than 5% unreliable (Matching desktop reliability)
  • Achieve consensus on and create a reliable process for mobile responsiveness testing and evaluation (matrix, methods, analysis).
  • Land on baseline numbers based on the above and create measurable perf targets through March 2012.
  • Re-energize efforts to resolve mobile startup shrink issues
  • Make more progress on Keyboard and IME bugs

B2G

  • Gingerbread ROM with symbols for Galaxy S2 for Android Firefox debugging
  • B2G ROM that can be used to build a basic phone (phone, contacts, vibrator, wifi, lock screen, etc).
  • Basic Phone UI (Gaia) for B2G that can be used as primary phone for Mozilla developers

Research

  • Rust: Release version 0.1
  • Servo: Make DOM.js complete enough to run jQuery
  • TC39: Implement modules in SpiderMonkey
  • GPU Research: Investigate WebGL Video decoding
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