The document discusses merging the UIProcess and compositor in WebKit to simplify the architecture for using WebKit with Wayland. This removes the intermediate purpose of the UIProcess, reduces complexity, and enables simplifying the compositor. The UIProcess would become a shared library loaded by the compositor, which would show a single surface for the WebProcess. Hardware support, especially for the Wayland EGL platform, is a key requirement.

1. WebKit for Wayland
Žan Doberšek
Igalia
e-mail zdobersek@igalia.com
twitter @falconsigh
www blogs.igalia.com/zdobersek

2. youtube.com/tv
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3. WebKit and Wayland
Wayland support provided by the toolkit.
Must be run under the parent compositor.
Complicated hardware-accelerated compositing of Web content.
A nested Wayland compositor needed in the UIProcess.·
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5. ... but why the toolkit?
Adds unnecessary complexity in the architecture.
No need for various widgets, theming support.
Not run under the traditional desktop environment.
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6. The idea
Merge the UIProcess and the compositor.
Have the WebProcess interact directly with the compositor.
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7. Benefits
Removes the intermediate purpose of the UIProcess.
Reduces the architectural complexity.
Enables simplifying the compositor.
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9. Implementation
UIProcess now a shared library that the compositor loads.
Compositor shows the single surface designated to the WebProcess.
Input events originate from the compositor, handled by the UIProcess.
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10. Hardware
#1 requirement: support for the Wayland EGL platform
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11. Raspberry Pi
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12. Jetson TK1
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13. Future hardware
As much as possible.
Minnowboard Max
Nexus 9
Something with the Adreno GPU
Something with the Mali GPU
Something with the PowerVR GPU
Something with a GPU
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14. Future software improvements
Improving graphics performance in WebKit, Cairo.
Improving W3C/WHATWG standards support in WebKit.
Never implement NPAPI/PPAPI/NaCl plugins. Ever.
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15. Questions
Thank you.
e-mail zdobersek@igalia.com
twitter @falconsigh
www blogs.igalia.com/zdobersek
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