1407507 - iframes are fine, but not all divs on https://www.servoexperiments.com/experiments/test-filters/

Status: RESOLVED DUPLICATE of bug 1406183

(Core :: Graphics: WebRender, defect)

Description

[Darkspirit]

Nightly 58 x64 20171010220102 de_DE @ Debian Testing (KDE, Radeon RX480)
gpu process + layers force accel + webrender (without webrendest)

iframes fine, divs not:
* blur jumps
* these are invisible at some point: drop-shadow, hue-rotate, opacity, saturate

https://www.servoexperiments.com/experiments/test-filters/

Comment 1

[Darkspirit]

I ran mozregression vice versa. prefs: layers force accel + webrender + webrendest
good = broken (comment 0)
bad = now (mostly fixed)
> 13:27.58 INFO: Last good revision: 8ad5d399ad84ce019270a2174cfb6016ab2d6c45
> 13:27.58 INFO: First bad revision: feb6c81d3a2a024c9a0cdd523c436a0e3b7fe983
> 13:27.58 INFO: Pushlog:
> https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=8ad5d399ad84ce019270a2174cfb6016ab2d6c45&tochange=feb6c81d3a2a024c9a0cdd523c436a0e3b7fe983

(In reply to Jan Andre Ikenmeyer [:darkspirit] from comment #0)
> iframes fine, divs not:
> * blur jumps
> * these are invisible at some point: drop-shadow, hue-rotate, opacity, saturate
These got fixed.
bug 1406183 improved this *drastically*. 

The last problem I perceive is with the "contrast div": The last moment when it's returning from grey to the original image is not smooth. It jumps from light grey to bright original image.

Comment 2

[Markus Stange [:mstange]]

(In reply to Jan Andre Ikenmeyer [:darkspirit] from comment #1)
> I ran mozregression vice versa. prefs: layers force accel + webrender +
> webrendest
> good = broken (comment 0)
> bad = now (mostly fixed)

You can use the --find-fix flag so that you don't have to do mental gymnastics to invert the meaning of good and bad :)

> The last problem I perceive is with the "contrast div": The last moment when
> it's returning from grey to the original image is not smooth. It jumps from
> light grey to bright original image.

I filed https://github.com/servo/webrender/issues/1854 about this.

Comment 3

[Markus Stange [:mstange]]

Let's mark this as a duplicate of bug 1406183 and track the contrast() issue in bug 1408116.