TPEGFX/2017-Q1

GFX Topics(from high to low priority)

• gfx Stability
• Quantum Rendering(FF57 Aurora on 8/7)
• Canvas 2D perf(google sheet/streaming)
• DisplayList(layout related work)
• Paint correctness(buglist)
• Any layout works, ex: perf/CSS properties

Goal

Daosheng Mu

• bug 1260558 - [webvr] [meta] Support Oculus Touch Controllers
  • bug 1305873 - [webvr] Update Oculus support to the latest SDK (Currently 1.10)
  • bug 1305889 - [webvr] Enumerate Oculus Touch Controllers through the Gamepad API
  • bug 1305890 - [webvr] Support Oculus Touch button and analogue inputs in the Gamepad API
  • bug 1305891 - [webvr] Support Oculus Touch orientation and position tracking in the Gamepad API
  • bug 1305892 - [webvr] Support Oculus Touch Haptic Feedback
• bug 1323328 - [webvr] Implement Cross-Browser compatible tool for emulating VR hardware
  • Integrate with OpenVR runtime source code to simulate the real device
  • Share conformance test suite to ensure compatibility across browsers as much as possible.
  • Gamepad extension tests
• bug 1229479 - [webvr] Implement Mochitests for WebVR (optional)
  • bug 1306493 - [webvr] Implement Mochitest: Multiple calls to VRDisplay.GetFrameData must return the same values within a frame
  • bug 1306505 - [webvr] Implement mochitest: VRDisplay.exitPresent must only be allowed by content that started VR Presentation
  • bug 1306507 - [webvr] Implement Mochitest: VRDisplay.isPresenting must not spill information between JS contexts
  • bug 1311797 - [webvr] Implement Mochitest: `vrdisplayactivate` event should trigger only when no content is presenting
  • bug 1311802 - [webvr] Implement Mochitest: onvrdisplaydeactivate should only trigger for content that is presenting
• bug 1302341 - SVG link element focus behavior (optional)
• bug 1302340 - SVG elements and negative tabindex (optional)
• TODO (senior engs)
  • breakdown every item into one small bug(less than one month)
  • mentor topics
  • Team influence
  • WebGL thought --- Performance regression tool?
    • https://github.com/KhronosGroup/WebGL/issues
  • Figure out WebGL perf plan, like talos or perf improvment

Ethan Lin

• nsDisplayBorder conversion
  • Enable more border properties (radius, color)
  • Testing
    • Turn on pref for some reftest
  • Debug Tool(TBD)
    • Identify which layer is converted layer (not PaintedLayer)

• DisplayItem conversion perf
  • Simplify properties conversion
    • gfx:Rect -> WRRect -> WrRect
  • memory usage/memory copy/IPC cost when there are lots of displayitems
  • Convert other items

• Import ContentClient to WebRenderPaintedLayer
  • Import SingleTiledContentClient first
  • Rotation Buffer - Need to push two sub rect to WR
• TODO (senior engs)
  • breackdown every item into one small bug(less than one month)
  • Copy WR items into gfx-wr-2017 with effort estimation
  • mentor topics(optional)
  • Team influence

Jerry Shih

• WR external image
  • update compositable, textureHost and textureSource for new WR thread model(WR render and WR backend are not at IPC receiver thread)
  • [WR]handle shmem in WR(upload to gl texture in WR)
  • support subimage for wr add_image api
  • support GL_IOSurface ( https://github.com/servo/webrender/issues/642 )
• WR software backend
  • TBD
• Performance and memory usage comparison
  • compare the current gecko and the WR with all WRImageLayer for gallery-like page.

• TODO (mid of Jan review first two itmes)
  • breackdown every item into one small bug(less than one month)
  • Copy WR items into gfx-wr-2017 with effort estimation
  • mentor topics
  • Team influence

Morris Tseng

• Canvas support
  • Using CanvasClient for canvas[Done]
  • [WR]Share MacIOSurface(lower)
    • WebRender need handle TextureRect in shader. (texture coordinate, shader code...etc)
  • Share ANGLE surface
    • Need to investigate how to translate DXGI to angle gl texture.
  • Handle y-flip
  • Handle surface format (e.g RGBA and RGBX)

• Convert nsDisplayBullet
  • Create BulletLayer
  • Send Bullet attributes to webrender
  • Quote from https://public.etherpad-mozilla.org/p/wr-plan#lineNumber=185
    • Supports disc, circle, square, disclosure triangle and image.
    • disc, circle and square are drawn as glyphs -> text item
    • disclosure triangle is a triange path that is filled -> path item
    • image -> image item
• TODO (senior engs)
  • List risk/black box for Canvas support
  • breackdown every item into one small bug(less than one month)
  • Copy WR items into gfx-wr-2017 with effort estimation
  • Your output/questions before Feb work week
  • mentor topics
  • Team influence

Peter Chang

• OMTA
  • dispatch animation/animationdata (bug 1325022)
  • Works in compositor side
    • save animation data based on related div(or containerlayer)
    • sampling animation during composition (bug 1328229)
    • replay framedata to WR with new animation (bug 1328231)
    • Add support to Webrender(opacity and scaling)
  • Support OMTA testing flow

   The followings related to testing of OMTA
   nsDOMWindowUtils::GetOMTAStyle()
   SetTestSampleTime()
   LeaveTestMode()

open qusetion

• TODO (senior engs)
  • breackdown every item into one small bug(less than one month)
  • Copy WR items into gfx-wr-2017 with effort estimation
  • mentor topics
  • Team influence

Ethan

 disable fallback for reftest
 share the same mapping between c++/rust by code generator

 evaluate displayitem conversion performance/memory usage

Morris

 how to support image layer more efficiently(similar to jerry's question?)

Jerry

 image resource lifetime problem

peter

omta always repaint all pixel in WR