--- breadcrumbs: - - /teams - Teams - - /teams/paint-team - Paint Team (paint-dev) page_name: canvas-okrs title: Canvas team OKRs --- ## Q4 2016 Ship OffscreenCanvas [#wp-performance](https://easyokrs.googleplex.com/search/?q=wp-performance) [#wp-ergonomics](https://easyokrs.googleplex.com/search/?q=wp-ergonomics) Owners: [chrome-canvas](https://easyokrs.googleplex.com/view/chrome-canvas/), [junov](https://easyokrs.googleplex.com/view/junov/), [xidachen](https://easyokrs.googleplex.com/view/xidachen/), [xlai](https://easyokrs.googleplex.com/view/xlai/) * Lead: xlai * implement convertToBlob * Owner: [xlai](https://easyokrs.googleplex.com/view/xlai/) * Make placeholder canvas elements work as image sources (drawImage, toBlob, etc) * Owner: [xlai](https://easyokrs.googleplex.com/view/xlai/) * Ship it in M57 * Owners: [junov](https://easyokrs.googleplex.com/view/junov/), [xidachen](https://easyokrs.googleplex.com/view/xidachen/), [xlai](https://easyokrs.googleplex.com/view/xlai/) * This includes achieving full spec conformance. * Make a convincing performance demo, and support devrel with launch PR * Owner: [xlai](https://easyokrs.googleplex.com/view/xlai/) * Land the specification against whatwg * Owner: [junov](https://easyokrs.googleplex.com/view/junov/) * Get canvas filters to work in a Worker * Owner: [fserb](https://easyokrs.googleplex.com/view/fserb/) * Make OffscreenCanvas commit flow works in the Android WebView * Owner: [xidachen](https://easyokrs.googleplex.com/view/xidachen/) * Write tests that verify that it works, fix if necessary. Copy[Link](https://easyokrs.googleplex.com/o/2361706/) OffscreenCanvas testing and tracking [#wp-predictability](https://easyokrs.googleplex.com/search/?q=wp-predictability) Owners: [chrome-canvas](https://easyokrs.googleplex.com/view/chrome-canvas/), [junov](https://easyokrs.googleplex.com/view/junov/), [xidachen](https://easyokrs.googleplex.com/view/xidachen/), [xlai](https://easyokrs.googleplex.com/view/xlai/) * Lead: xidachen * Contribute to web platform tests * Owners: [junov](https://easyokrs.googleplex.com/view/junov/), [xidachen](https://easyokrs.googleplex.com/view/xidachen/), [xlai](https://easyokrs.googleplex.com/view/xlai/) * Achieve complete test coverage: Each statement in the spec should be covered by tests, with xrefs to the spec. Upstream the tests to web platform tests repo, test other implementations for conformance Main owner/coordinator is xidachen. xlai and junov are contributors. * Add telemetry performance tests for OffscreenCanvas * Owner: [xidachen](https://easyokrs.googleplex.com/view/xidachen/) * Must cover commit() and ImageBitmap flows, cover all permutations of GPU/CPU rendering and compositing, run on GPU bots. * Add usage metrics histograms. * Owner: [xidachen](https://easyokrs.googleplex.com/view/xidachen/) * Must track: \* OffscreenCanvas feature usage \* mode of operation (commit vs transferToImageBitmap) \* commit() code path \* CPU run time for each commit() code path (on the thread where commit is called) \* commit() latency (time elapsed from commit() call to UI compositor update) * Have the fastest implementation * Owners: [junov](https://easyokrs.googleplex.com/view/junov/), [xidachen](https://easyokrs.googleplex.com/view/xidachen/), [xlai](https://easyokrs.googleplex.com/view/xlai/) * Write animometer-style benchmarks for OffscreenCanvas (commit and imageBitmap flows, 2D and WebGL). Compare to other implementations. Stay on top Main owner/coordinator: xidachen. junov and xlai to contribute to fixing perf issues. requestAnimationFrame in Workers [#wp-ergonomics](https://easyokrs.googleplex.com/search/?q=wp-ergonomics) Owners: [chrome-canvas](https://easyokrs.googleplex.com/view/chrome-canvas/), [junov](https://easyokrs.googleplex.com/view/junov/) * Implement it * Spec it * Ship it in M57 Product excellence [#wp-health](https://easyokrs.googleplex.com/search/?q=wp-health) Owners: [chrome-canvas](https://easyokrs.googleplex.com/view/chrome-canvas/), [xidachen](https://easyokrs.googleplex.com/view/xidachen/), [xlai](https://easyokrs.googleplex.com/view/xlai/) * Lead: xidachen * Weekly product excellence report * Owner: [xidachen](https://easyokrs.googleplex.com/view/xidachen/) * Publish weekly report to chrome-canvas mailing list. Bug stats: outstanding bug count (number fixed, number of new bugs), list of high-profile outstanding bugs (crashers, security, regressions, highly starred, p0-p1), high profile bugs resolved since last report. Keep report history in a google doc. Delegate reporting when on leave. * Performance metrics report * Owner: [xidachen](https://easyokrs.googleplex.com/view/xidachen/) * Twice in the quarter, present to paint team show salient fluctuations in key performance metrics. * Prevent bug count from creeping up. * Owners: [junov](https://easyokrs.googleplex.com/view/junov/), [xidachen](https://easyokrs.googleplex.com/view/xidachen/), [xlai](https://easyokrs.googleplex.com/view/xlai/), [zakerinasab](https://easyokrs.googleplex.com/view/zakerinasab/) * (104 outstanding bugs as of October 5 2016) * Refactor Canvas and OffscreenCanvas dependencies on cc * Owners: [xidachen](https://easyokrs.googleplex.com/view/xidachen/), [xlai](https://easyokrs.googleplex.com/view/xlai/) Misc canvas features [#wp-ergonomics](https://easyokrs.googleplex.com/search/?q=wp-ergonomics) Owner: [chrome-canvas](https://easyokrs.googleplex.com/view/chrome-canvas/) * Make experimental implementation of canvas colorspace work * Owners: [junov](https://easyokrs.googleplex.com/view/junov/), [zakerinasab](https://easyokrs.googleplex.com/view/zakerinasab/) * Experimental implementation of text rendering in workers (stretch) * Owner: [zakerinasab](https://easyokrs.googleplex.com/view/zakerinasab/) * 0.5 for getting text to render using only the default font. * Ship DOMMatrixInit-based canvas APIs (stretch) * Owner: [xlai](https://easyokrs.googleplex.com/view/xlai/) ## Q3 2016 OffscreenCanvas feature complete [#wp-future](https://easyokrs.googleplex.com/search/?q=wp-future) Owners: [chrome-canvas](https://easyokrs.googleplex.com/view/chrome-canvas/), [junov](https://easyokrs.googleplex.com/view/junov/), [xidachen](https://easyokrs.googleplex.com/view/xidachen/), [xlai](https://easyokrs.googleplex.com/view/xlai/) * 0.80P2commit() flow working for 2D canvas * Owner: [xlai](https://easyokrs.googleplex.com/view/xlai/) * Mid-quarter status: Stalled for about 3 weeks due to dependency on mojo improvements. Still on track for EOQ EOQ status: Mostly implemented except software compositing cases * 0.80P2commit() flow working for WebGL * Owner: [xidachen](https://easyokrs.googleplex.com/view/xidachen/) * Mid-quarter status: Not started, still possible by EOQ. EOQ status: Mostly implemented except software compositing cases * 1.00P3GPU-accelerated 2D canvas in a worker * Owner: [junov](https://easyokrs.googleplex.com/view/junov/) * Mid-quarter status: WIP CL almost done. On track. EOQ status: done. * 0.50P1Finish specification for OffscreenCanvas (rolled over from Q2) * Owner: [junov](https://easyokrs.googleplex.com/view/junov/) * Mid-quarter status: iterated on proposal some more, still attainable by EOQ, moderate risk of slipping. EOQ: Draft complete, not yet publicly shared. * 0.80P3Canvas readback APIs + tainting for 2D * Owner: [xlai](https://easyokrs.googleplex.com/view/xlai/) * getImageData + toBlob + toDataURL working on OffscreenCanvas on main thread + Workers (stretch) Mid-quarter status: WIP, tainting for 2D completed, the rest partially implemented, at risk of slipping into Q4 EOQ status: done, except for toBlob which is not yet implemented Copy[Link](https://easyokrs.googleplex.com/o/2239617/) 0.10P3Canvas color space support [#wp-future](https://easyokrs.googleplex.com/search/?q=wp-future) Owners: [chrome-canvas](https://easyokrs.googleplex.com/view/chrome-canvas/), [junov](https://easyokrs.googleplex.com/view/junov/) * Mid-quarter: Slow progress so far this Q, work on colorspace implementation is ramping up with [zakerinasab@](https://teams.googleplex.com/zakerinasab) * 0.00P2Converge spec proposal * Owner: [junov](https://easyokrs.googleplex.com/view/junov/) * Close all unresolved issues about the proposal on the W3C WICG forum Mid-quareter status: No progress. Still attainable this Q * 0.00P3Write spec (stretch) * Owner: [junov](https://easyokrs.googleplex.com/view/junov/) * Commit CanvasColorSpace spec against WHATWG HTML spec. Mid-quarter status: No progress, not likely this quarter. * 0.30P4Prototype/experimental implementation in Blink * Owner: [junov](https://easyokrs.googleplex.com/view/junov/) * Mid-qarter status: Partially landed. Experimental API is there, color space plumbing in the compositor is there, not functional due to several missing pieces in skia, blink and compositor. 0.74P1Product Excellence [#wp-health](https://easyokrs.googleplex.com/search/?q=wp-health) Owners: [chrome-canvas](https://easyokrs.googleplex.com/view/chrome-canvas/), [junov](https://easyokrs.googleplex.com/view/junov/), [xidachen](https://easyokrs.googleplex.com/view/xidachen/), [xlai](https://easyokrs.googleplex.com/view/xlai/) * 0.80P2Reduce bug count * Owners: [junov](https://easyokrs.googleplex.com/view/junov/), [xidachen](https://easyokrs.googleplex.com/view/xidachen/), [xlai](https://easyokrs.googleplex.com/view/xlai/) * Go from 121 to under 100 open bugs (Type = Bug + Bug-Regression + Bug-Security) Mid-quarter status: 106 outstanding bugs. On track! EOQ status: 104 bugs. * P1Resolve all memory leak-like issues related to canvas * Owner: [xidachen](https://easyokrs.googleplex.com/view/xidachen/) * Mid-quarter status: Out of our hands: dependency on V8 team GC triggers. * 0.80P12 week SLA on fixing crashers and security bugs * Owners: [junov](https://easyokrs.googleplex.com/view/junov/), [xidachen](https://easyokrs.googleplex.com/view/xidachen/), [xlai](https://easyokrs.googleplex.com/view/xlai/) * Mid-quarter status: On track. EOQ status: crasher 624718 is lagging behind. Otherwise we did good. * 1.00P21 week SLA on triage * Owner: [junov](https://easyokrs.googleplex.com/view/junov/) * Mid-quarter status: on track EOQ: done. * 0.50P3Be the best browser for all canvas-related Animometer benchmark scores * Owner: [junov](https://easyokrs.googleplex.com/view/junov/) * (Includes work by intern sebastienlc) Mid-quarter status: implemented but not enabled. Not on track because no one is currently owning follow-up on intern's work. Postponing. EOQ status: some heuristic for falling back to SW have been implemented, thus preventing critical performance cliffs. Global approach is not ready to ship. * 0.60P2Fix top starred issues * Owners: [junov](https://easyokrs.googleplex.com/view/junov/), [xidachen](https://easyokrs.googleplex.com/view/xidachen/) * crbug.com/618324 - Experimental \`imageSmoothingQuality\` property doesn't provide expected quality crbug.com/7508 - We don't anti-alias <canvas> drawImage Mid-quarter status: 7508 is fixed, 618324 has been investigated but will probably not be fixed this quarter. EOQ status: 1/2 bugs fixed + bonus bug 424291 Misc Features [#wp-future](https://easyokrs.googleplex.com/search/?q=wp-future) [#wp-performance](https://easyokrs.googleplex.com/search/?q=wp-performance) Owner: [chrome-canvas](https://easyokrs.googleplex.com/view/chrome-canvas/) * 0.70P3Ship ImageBitmap resize * Owner: [xidachen](https://easyokrs.googleplex.com/view/xidachen/) * Mid-quarter status: on track EOQ staus: implementation complete, but not shipped * 0.90P2Ship ImageSmoothingQuality * Owner: [junov](https://easyokrs.googleplex.com/view/junov/) * Mid-quarter status: done, but there are outstanding complaint about the quality of the mipmaps used for high quality filtering.