1970775 - With Layer compositor. scrolling a large image redraws the whole browser.

Status: RESOLVED WORKSFORME

(Core :: Graphics: WebRender, defect, P1)

Description

[Mayank Bansal]

Attachment: Layer comp on the left. Default comp on the right.

Enable layer compositor
Open a LARGE image file that has some huge dimensions. An image that you will need to click on to come to full-size and then you can scroll on it. Maybe try https://upload.wikimedia.org/wikipedia/commons/9/96/The_Garden_of_earthly_delights.jpg
Once it loads, click on it to open it in its full size
Enable debug-dcomp-redraw thingy
On the full-size image, scroll using the touchpad

AR: The whole image and the whole browser redraw
ER: With the defauly compositor, only the image redraws

Comment 1

[Mayank Bansal]

Attachment: Only layer comp.mp4

Comment 2

[Mayank Bansal]

Attachment: about:support

Comment 3

[Mayank Bansal]

Additional point: I noticed that with both the compositors, with the image in full-zoom, random small redraws occur inside the image.

Comment 4

[Mayank Bansal]

This is fixed.