1655639 - Add support for transforms in the Draw compositor.

Status: RESOLVED FIXED

(Core :: Graphics: WebRender, task, P3)

Description

[Matt Woodrow (:mattwoodrow)]

Bug 1653166 is adding support for transforms to external Compositors, but not for the Draw compositor.

If we add support to the Draw compositor, then we can remove the current y-flip handling code.

Comment 1

[Glenn Watson [:gw]]

We need this for the low quality pinch-zoom support to work on linux / android when running hw-wr, so I'll take this.

Comment 2

[Glenn Watson [:gw]]

Attachment: Bug 1655639 - Add support for transforms in the Draw compositor

This allows the draw compositor to correctly work with the low
quality pinch-zoom mode.

It also allows handling more external surfaces as compositor
surfaces, by allowing anything with a 2d scale and/or offset.

The y-flip special casing is removed since it's handled by the
general compositor transform support now.

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/735ba5802dab
Add support for transforms in the Draw compositor r=nical

Comment 4

[Alexandru Michis [:malexandru]]

https://hg.mozilla.org/mozilla-central/rev/735ba5802dab