Commit graph

246 commits

Author SHA1 Message Date
Vlad Zagorodniy
4e5d3d0010 Port away from QRegion::rects
Summary:
QRegion::rects was deprecated in Qt 5.11. It is advised to use begin()
and end() methods instead.

Reviewers: #kwin, romangg

Reviewed By: #kwin, romangg

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D22353
2019-07-10 01:00:51 +03:00
Fredrik Höglund
5191311d36 [effects/blur] Disable sRGB when the framebuffer is linear
Disable sRGB rendering when the color encoding of the default
framebuffer is linear.

BUG: 408594
FIXED-IN: 5.16.3

Differential Revision: https://phabricator.kde.org/D22153

Signed-off-by: Fredrik Höglund <fredrik@kde.org>
2019-07-09 00:43:33 +02:00
Vlad Zagorodniy
0d7415336f [effects] Make sure that all effects reset the streaming buffer
Summary:
The streaming buffer is shared so we have to reset it before rendering
something. Otherwise, it's basically undefined behavior.

For example, if the streaming buffer had been used for rendering a
geometry with some color, then the Background Contrast effect may crash
in GLVertexBuffer::bindArrays, it all depends on whether there is any
bounded GLShader. To fix that, the buffer has to be reset.

BUG: 356141

Reviewers: #kwin, davidedmundson

Reviewed By: #kwin, davidedmundson

Subscribers: davidedmundson, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D19034
2019-02-15 15:51:54 +02:00
Alex Nemeth
3c2148a5fb [effects/blur] Update blur to be more natural
Summary:
This gets rid of the dark area that may appear between very different colors by doing the blur in SRGB colorspace.
This is not enabled for GLES, and will use the previous blur type.

Test Plan:
Before:
{F6577457}

After:
{F6577458}

Reviewers: #vdg, #kwin, davidedmundson, zzag, fredrik, ngraham

Reviewed By: #vdg, fredrik, ngraham

Subscribers: Codezela, fredrik, abetts, Petross404, rapiteanu, filipf, rooty, ngraham, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D18377
2019-01-31 19:21:40 +01:00
Martin Flöser
02a0561016 Add windowsystem plugin for KWin's qpa
Summary:
KWindowSystem provides a plugin interface to have platform specific
implementations. So far KWin relied on the implementation in
KWayland-integration repository.

This is something I find unsuited, for the following reasons:
 * any test in KWin for functionality set through the plugin would fail
 * it's not clear what's going on where
 * in worst case some code could deadlock
 * KWin shouldn't use KWindowSystem and only a small subset is allowed
to be used

The last point needs some further explanation. KWin internally does not
and cannot use KWindowSystem. KWindowSystem (especially KWindowInfo) is
exposing information which KWin sets. It's more than weird if KWin asks
KWindowSystem for the state of a window it set itself. On X11 it's just
slow, on Wayland it can result in roundtrips to KWin itself which is
dangerous.

But due to using Plasma components we have a few areas where we use
KWindowSystem. E.g. a Plasma::Dialog sets a window type, the slide in
direction, blur and background contrast. This we want to support and
need to support. Other API elements we do not want, like for examples
the available windows. KWin internal windows either have direct access
to KWin or a scripting interface exposed providing (limited) access -
there is just no need to have this in KWindowSystem.

To make it more clear what KWin supports as API of KWindowSystem for
internal windows this change implements a stripped down version of the
kwayland-integration plugin. The main difference is that it does not use
KWayland at all, but a QWindow internal side channel.

To support this EffectWindow provides an accessor for internalWindow and
the three already mentioned effects are adjusted to read from the
internal QWindow and it's dynamic properties.

This change is a first step for a further refactoring. I plan to split
the internal window out of ShellClient into a dedicated class. I think
there are nowadays too many special cases. If it moves out there is the
question whether we really want to use Wayland for the internal windows
or whether this is just historic ballast (after all we used to use
qwayland for that in the beginning).

As the change could introduce regressions I'm targetting 5.16.

Test Plan:
new test case for window type, manual testing using Alt+Tab
for the effects integration. Sliding popups, blur and contrast worked fine.

Reviewers: #kwin

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D18228
2019-01-27 08:59:58 +01:00
Vlad Zagorodniy
253ff428a7 [effects] Port to new connect syntax
Summary:
The new connect syntax has several advantages over the old syntax:

(a) Connecting with the new syntax is faster;
(b) It is compile time checked.

There are still a few places where the old connect syntax is used, e.g.
connecting to QML buttons in the Desktop Grid effect.

Test Plan:
Have been testing this patch for ~2 weeks, haven't noticed any
regressions.

Reviewers: #kwin, davidedmundson

Reviewed By: #kwin, davidedmundson

Subscribers: davidedmundson, broulik, graesslin, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D18368
2019-01-26 01:22:06 +02:00
Vlad Zagorodniy
12bd16968f [effects/blur] Add missing override keywords
Test Plan: Compiles.

Reviewers: #kwin, broulik

Reviewed By: broulik

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D15712
2018-09-24 15:42:22 +03:00
Vlad Zagorodniy
624a453109 Clean up includes
Summary:
* effects.h includes client.h and forward declares Client, both at the
  same time. Thus, delete the include;

* the blur effect includes effects.h. That, most likely, is a leftover
  after 3f5bf65a9e.

Test Plan: Compiles.

Reviewers: #kwin, davidedmundson

Reviewed By: #kwin, davidedmundson

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D15191
2018-08-31 22:58:11 +03:00
l10n daemon script
3b3aa82f58 SVN_SILENT made messages (.desktop file) - always resolve ours
In case of conflict in i18n, keep the version of the branch "ours"
To resolve a particular conflict, "git checkout --ours path/to/file.desktop"
2018-07-23 05:24:40 +02:00
Vlad Zagorodniy
168109f3bb [effects/blur] Clean up shader code
Summary:
* Drop abstract BlurShader class
* Delete evil "using namespace KWin"
* Fix includes
* Use smart pointers
* Turn BlurShader into a QObject
* Fix coding style
* Add missing default cases
* Use default member initialization
* Delete methods that are used only once
* Use more const
* Use QRect::{top,right,bottom,left} methods in the setBlurRect method

Reviewers: #kwin, davidedmundson

Reviewed By: #kwin, davidedmundson

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D13110
2018-06-18 15:50:52 +03:00
Alex Nemeth
81f38abe6d [effects/blur] Check for blitting support
Summary:
In D12678 blur was changed to use `blitFromFramebuffer()` instead of `glCopyTexSubImage2D()`
Now it checks if the GPU supports it.

Reviewers: #kwin, davidedmundson

Reviewed By: #kwin, davidedmundson

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D13246
2018-06-01 12:18:50 +02:00
Alex Nemeth
b3b691a250 Fix blur on Wayland when scaling is used
Summary:
Blur should now work on Wayland when scaling is used.
This does not affect X11 as `GLRenderTarget::virtualScreenScale()` is always 1 on X11

BUG: 391387
Depends on D12678

Test Plan:
  - log in in a Wayland session
  - turn display scaling to 2x
  - open a transparent window (for example: Konsole with transparent and blur enabled profile)
  - blurs the content under the window corretly

Reviewers: davidedmundson, #kwin

Reviewed By: davidedmundson, #kwin

Subscribers: romangg, apol, zzag, kwin, #kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D12700
2018-05-31 14:34:58 +02:00
Vlad Zagorodniy
95ee052442 [effects/blur] Lookup window once when disconnecting from blurChanged
Summary:
When disconnecting from `blurChanged` signal, `(w, connection)` pair is
being looked up three times. We can do better by using `QMap` in a more
STL-like way.

Reviewers: #kwin, davidedmundson

Reviewed By: #kwin, davidedmundson

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D13118
2018-05-31 12:08:08 +03:00
Alex Nemeth
99532fb95c Fix multimonitor blur
Summary:
On wayland blur on secondary monitor would not render correctly.

BUG: 393723
Depends on D12452

Test Plan:
 - use more than one output
 - log in in a wayland session
 - open a transparent window (for example: Konsole with transparent and blur enabled profile)
 - drag the window to another screen
 - blurs the content under the window corretly

Reviewers: #kwin, graesslin, davidedmundson

Reviewed By: #kwin, davidedmundson

Subscribers: apol, zzag, davidedmundson, kwin, #kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D12678
2018-05-29 15:32:55 +02:00
Alex Nemeth
16a0e24115 Fix blur noise effect using incorrect scaling value
Summary:
`QGuiApplication::primaryScreen()->logicalDotsPerInch()` sometimes reports incorrect scale value, for example 95.951 (or even lower) instead of 96.0 at 1x scale and this caused to simply darken blurred areas instead of noising them.
This patch sets a minimum 1x scale for the noise texture, because realistically we will never be below that.

Reviewers: davidedmundson

Reviewed By: davidedmundson

Subscribers: davidedmundson, kwin, #kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D12519
2018-04-30 18:02:29 +02:00
Vlad Zagorodniy
75fff17612 Fix unused param warnings
Summary:
Compiler: GCC 7.3.1
Distro: Arch Linux

Compiler warnings:

```
/home/vlad/KDE/src/kde/workspace/kwin/effects/blur/blur.cpp: In member function ‘void KWin::BlurEffect::upscaleRenderToScreen(KWin::GLVertexBuffer*, int, int, QMatrix4x4, QRect, QPoint)’:
/home/vlad/KDE/src/kde/workspace/kwin/effects/blur/blur.cpp:677:129: warning: unused parameter ‘windowShape’ [-Wunused-parameter]
 void BlurEffect::upscaleRenderToScreen(GLVertexBuffer *vbo, int vboStart, int blurRectCount, QMatrix4x4 screenProjection, QRect windowShape, QPoint windowPosition)
                                                                                                                                 ^~~~~~~~~~~
```

```
/home/vlad/KDE/src/kde/workspace/kwin/main_wayland.cpp: In function ‘void KWin::{anonymous}::gainRealTime(KWin::RealTimeFlags)’:
/home/vlad/KDE/src/kde/workspace/kwin/main_wayland.cpp:95:56: warning: unused parameter ‘flags’ [-Wunused-parameter]
 void gainRealTime(RealTimeFlags flags = RealTimeFlags::DontReset)
```

Reviewers: #kwin, davidedmundson

Reviewed By: davidedmundson

Subscribers: anemeth, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D12208
2018-04-20 21:07:27 +03:00
l10n daemon script
e61383a198 SVN_SILENT made messages (.desktop file) - always resolve ours
In case of conflict in i18n, keep the version of the branch "ours"
To resolve a particular conflict, "git checkout --ours path/to/file.desktop"
2018-03-31 05:20:59 +02:00
Alex Nemeth
cc0325af41 Added noise blur effect
Summary:
Added the option to turn on noise behind the blurred area.
The lowest strength value disables it completely, so it is optional and is disabled by default.

Test Plan:
Edit: this new screenshot shows the updated noise generation.
Edit2: separated the screenshots so you can flick through them to clearly see the differences

{F5694024}

{F5694031}

{F5694025}

{F5694028}

Reviewers: #kwin, #vdg, fredrik

Reviewed By: #vdg, fredrik

Subscribers: davidedmundson, matheusm, romangg, ivan, zzag, ngraham, kwin, #kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D10281
2018-02-14 00:13:08 +01:00
Alex Nemeth
f8ff40271e Removed the "fastblur" path
Summary:
Since the new blur is more efficient "fastblur" or "simpleblur" is not needed anymore for fullscreen blur.
Even my old low-end laptop from 2009 (with Intel T3300) can easily do fullscreen blur now with the new method without any hitch at all.

Reviewers: graesslin, #kwin, #plasma, #vdg, fredrik

Reviewed By: #vdg, fredrik

Subscribers: avaragic, fredrik, ngraham, plasma-devel, kwin, #kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D10181
2018-02-03 19:04:11 +01:00
Alex Nemeth
0a22983bef Updated blur default value from 5/15 to 10/15
Summary: The default blur value of 5/15 is too low.

Test Plan:
Before:
{F5681825}

After:
{F5681826}

Reviewers: #vdg, #kwin, fredrik

Reviewed By: #vdg, fredrik

Subscribers: ngraham, kwin, #kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D10180
2018-02-01 19:56:51 +01:00
Alex Nemeth
977a5ef012 Reverted accidental file permission changes
Summary: In D9848 the file permissions in effects/blur where accidentally changed from 644 to 755.

Test Plan: {F5674656}

Reviewers: #kwin, hein

Reviewed By: hein

Subscribers: kwin, #kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D10100
2018-01-26 03:32:33 +09:00
Alex Nemeth
0179f741bb Updated the blur method to use the more efficient dual kawase blur algorithm.
Summary:
Updated the old and outdated blur method to use the much more efficient dual kawase blur method.
Now with this we can do virtually infinite blur with very very little performance cost.
The dual kawase blur method is basically downscaling and upscaling an image, but combined with the kawase blur shader.
Comparison: https://i.imgur.com/mh6Cw61.png
Left is old, right is new.
Comparison was done with the strongest blur setting in a VM running on an Intel i7-4790 and a GTX980
We can see here that the performance is even better with this new method.

Reviewers: #plasma, #kwin, graesslin, fredrik

Reviewed By: fredrik

Subscribers: hein, dos, luebking, broulik, romangg, zzag, anthonyfieroni, mart, davidedmundson, fredrik, ngraham, plasma-devel, kwin, #kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D9848
2018-01-26 02:31:45 +09:00
Martin Flöser
e200d74031 [effects/blur] Disable texture cache on Wayland
Summary:
It is known to create problems especially on multi-screen and is not as
important on Wayland as it used to be on X11 thanks to things like
buffer age and in general better rendering.

Test Plan: Opened the config module and verified that the option is
hidden

Reviewers: #kwin, #plasma

Subscribers: plasma-devel, kwin

Tags: #plasma

Differential Revision: https://phabricator.kde.org/D9879
2018-01-15 17:13:08 +01:00
Kai Uwe Broulik
9e8773cb43 [Contrast / Blur Effects] Port from QRegion::rects() to QRegion iterators
Especially the BlurEffect::expanded() method is called a lot.
Saves creating a temporary QVector.

Differential Revision: https://phabricator.kde.org/D9101
2017-12-02 17:38:14 +01:00
David Edmundson
b3020d6f5a Don't recreate kwayland blurmanager on screen size changes
Summary:
Instead of calling reconfigure() on screen size changes, which deletes
and recreates the effect, we can just update the one texture that's mapped to
the screen size.

---

From the wayland commit.

>What surprises me is that BlurManager recreates for Output changes.
>That sounds like a bug in KWin (or an area which could be improved).

I had thought the same and wrote this (though wanted to have kwayland fixed first)

Test Plan:
Logged in and out (my screen resizes on startup due to scaling)
Tested on my X machine by turning a screen off. Nothing broke, plasma
panels looked the same.

Note: Eike tried this patch last week and claimed kwin still crashed.
We don't have a backtrace so it could have been something unrelated,
applied wrong or that he was deliberately lying to wind me up.

Reviewers: #plasma, graesslin

Reviewed By: #plasma, graesslin

Subscribers: graesslin, plasma-devel, kwin, #kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D7877
2017-09-29 13:30:54 +01:00
Martin Flöser
90e77a939a [effects] Support xcbConnectionChanged for support properties
Summary:
Several effects announce a support property atom on the root window. This
change forwards the KWin::Application's signal that the xcbConnection
changed to the EffectsHandler so that the effects can respond to it.

All effects which announce a support property connect to this new signal
and re-announce the property. In case the xcb connection died (future
XWayland crashing case) it is set to XCB_ATOM_NONE by that. In case the
xcb connection got created (future delayed XWayland startup) the atom is
set to the proper value.

In addition all usages of the support properties are guarded, so that no
nonesense actions are performed if the support property is XCB_ATOM_NONE.

Test Plan: Only compile tested as we don't have XFree KWin yet

Reviewers: #kwin, #plasma

Subscribers: plasma-devel, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D7761
2017-09-12 18:53:31 +02:00
David Edmundson
80f21064f1 Merge branch 'scaling' 2017-04-29 14:11:13 +01:00
David Edmundson
44a6050e83 Add scaling support into BlurEffect::doBlur
Summary:
This patch caputres from the framebuffer using the framebuffer's
geometry, factoring in scale. We then keep the current normal DPI
framebuffer causing it to downsample there.

This is good because:
- it keeps the code very simple
- it's a performance optimisation. Blurring on 4k is naturally more
expensive than at regular DPI. Downsampling keeps it the same - and you
can't see a difference given it's high DPI and you're going to blur it
anwyay.
- it keeps kernel sizes somewhat resolution independent so it will look
just as blurry across multiple screens.

::doCachedBlur still needs doing.

Test Plan:
Ran an app
Ran the kwindowsystem blur test
Observed the right part of the window being blurred

Reviewers: #plasma

Subscribers: plasma-devel

Tags: #plasma

Differential Revision: https://phabricator.kde.org/D4963
2017-04-28 10:23:14 +01:00
Martin Gräßlin
2132b1e0c8 [effects] Use arg="true" in the kcfg files
Summary:
By changing all kcfg to have arg="true" we can pass in the same
KSharedConfigPtr into all effects. This allows to have fake config in
the tests and in the planned effect demo mode.

Also it means that we don't have to hardcode the name kwinrc into the
files. In the configs - where we cannot access the effectshandler - we
use the define KWIN_CONFIG which gets generated based on the compile
time arguments.

Reviewers: #kwin, #plasma

Subscribers: plasma-devel, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D3571
2017-04-15 10:03:34 +02:00
l10n daemon script
b160c5babb SVN_SILENT made messages (.desktop file) - always resolve ours
In case of conflict in i18n, keep the version of the branch "ours"
To resolve a particular conflict, "git checkout --ours path/to/file.desktop"
2017-03-25 04:37:53 +01:00
l10n daemon script
8725f2441e SVN_SILENT made messages (.desktop file) - always resolve ours
In case of conflict in i18n, keep the version of the branch "ours"
To resolve a particular conflict, "git checkout --ours path/to/file.desktop"
2017-03-22 05:17:38 +01:00
l10n daemon script
13d389efd1 SVN_SILENT made messages (.desktop file) - always resolve ours
In case of conflict in i18n, keep the version of the branch "ours"
To resolve a particular conflict, "git checkout --ours path/to/file.desktop"
2016-12-20 13:30:44 +01:00
Martin Gräßlin
bef9c9c8c5 Adjust blur and contrast for multi-output rendering on Wayland
Summary:
The glCopyTex(Sub)Image calls are adjusted to take the per output
rendering into account. In addition contrast effect sets the model view
projection matrix in each call to ensure it's on the correct screen.

Blur probably needs more changes for the cached texture to work, but
it's a start.

Test Plan: Blur and Background contrast work on multi-screen wayland

Reviewers: #kwin, #plasma_on_wayland

Subscribers: plasma-devel, kwin

Tags: #plasma_on_wayland, #kwin

Differential Revision: https://phabricator.kde.org/D3101
2016-10-18 16:38:50 +02:00
Martin Gräßlin
c789ce808b [effects] Disable Blur and BackgroundContrast on software emulation
On llvmpipe it's better to have them disabled.

Reviewed-By: Marco Martin
2016-08-09 14:56:13 +02:00
Marco Martin
f7feca678d respect WindowForceBlurRole or forcecontrast
even if scaled or translated, if WindowForceBlurRole is set
do the blur anyways

same thing for backgroundcontrast

reviewed by: Martin Gräßlin <mgraesslin@kde.org>
2016-02-25 12:47:25 +01:00
Marco Martin
e97eaffc6b Scale blurbehind and contrast besides translating
if the window we are blurring the background or adding contrast
has a scale transform applied, scale the area to be blurred as well
REVIEW:126980
2016-02-09 12:10:47 +01:00
Martin Gräßlin
bd5f642097 [effects] Check for LimitedNPOT
Effects which require mipmaps need to check for LimitedNPOT and
disable the functionality if only limited NPOT is available.

Ideally the effects could also check whether the texture they
operate on is a power of two, but that's a little overkill for
the rather uncommon setup.

REVIEW: 126966
2016-02-02 12:37:14 +01:00
Martin Gräßlin
22bd8badbf [effects] Add a simplified fullscreen blur
If a window is fullscreen and wants fullscreen blur behind it, we
use the blur from logout effect. This is mostly intended for the
Application Dashboard which requires a fullscreen blur. The generic
blur effect is not designed for such usage and is rather costly.

This simplified blur just needs framebuffer blit and midmaps. This
makes it rather cheap in usage and also doesn't need a cached texture.

REVIEW: 126906
2016-02-01 08:43:46 +01:00
l10n daemon script
bd3083e81f SVN_SILENT made messages (.desktop file) - always resolve ours
In case of conflict in i18n, keep the version of the branch "ours"
To resolve a particular conflict, "git checkout --ours path/to/file.desktop"
2016-01-30 09:40:55 +00:00
Martin Gräßlin
1752302203 [effects] Use passed through matrix in Blur Effect
The blur effect so far calculated a custom model view projection matrix.
This is not needed as we have the current projection matrix available in
WindowPaintData and EffectFrame.

REVIEW: 126215
2016-01-25 15:36:10 +01:00
Alex Richardson
cc29d0d296 Use SERVICE_TYPES parameter to kcoreaddons_desktop_to_json() 2015-12-09 23:42:45 +00:00
Martin Gräßlin
7983acea88 [effects] Support GLES 3 in Blur and BackgroundContrast
Fix code generation in case OpenGL ES 3 or later is used.

BUG: 324478
FIXED-IN: 5.5
REVIEW: 126003
2015-11-09 16:22:32 +01:00
Martin Gräßlin
78ac6aaf13 [effects] Runtime checks for GLES instead of compile time checks 2015-11-03 09:29:31 +01:00
Martin Gräßlin
044e2a05b2 [effects] Properly announce/remove support in blur/contrast if shader fails
Following the approach how it's done for X11: only create the interface
if the shader succeeded to compile and remove support again if it failed
to compile after a reconfigure.

REVIEW: 125444
2015-10-01 11:12:09 +02:00
Marco Martin
3f5bf65a9e Use the kwayland blur protocol in the blur effect
use the new blur protocol to fetch information about the
region of blur behind to apply to windows like Plasma::Dialog
REVIEW:125017
2015-09-02 14:43:44 +02:00
Thomas Lübking
0c71d514ce blur transparent 24bit windows
also stretch blur opacity a bit (ie.
slightly transparent windows get more
blur compared to their opacity)

REVIEW: 124148
2015-08-27 22:22:50 +02:00
Thomas Lübking
12358f839a no VBO upload for zero vertex count
causes out of bounds segfault

BUG: 347900
REVIEW: 123865
FIXED-IN: 5.3.1
2015-05-21 09:42:29 +02:00
l10n daemon script
262da1b7c9 SVN_SILENT made messages (.desktop file) - always resolve ours
In case of conflict in i18n, keep the version of the branch "ours"
To resolve a particular conflict, "git checkout --ours path/to/file.desktop"
2015-04-07 13:20:00 +00:00
Elias Probst
d00d3ea83c
Deprecate kservice_desktop_to_json(), use kcoreaddons_desktop_to_json() instead.
Get rid of deprecation warnings in effects KCM.

REVIEW: 121957
2015-01-16 22:52:26 +01:00
Martin Gräßlin
ca1354e8af [effects/blur] Disable cached blur for deleted windows
This is a kind of workaround for the flicker of fading out windows.
When a window is faded out it is a deleted and can by that be used
as a sufficient solution to work around the problem.

BUG: 307112
FIXED-IN: 5.2.0
REVIEW: 121909
2015-01-08 09:07:21 +01:00