QtGraphicalEffects not available in Qt6 (qml)

bolt · wrote on 8 Feb 2021, 03:21

I encountered the same error, IDE told me module couldn't be found in default dir[~Qt/6.0.0/clang_64/qml], and then I checked it, IDE was right,
but I found QtGraphicalEffects exist in another two dir[~/Qt/Qtcreator/..] [~/Qt/Designer Studio2/...].I copied subdir[QtGraphicalEffects] from [~/Qt/Qtcreator/..] to excutable dir,
build process finished but launcher ended with "plugin incompatible".

all problem solved by change 6.0 to 5.12

Hitokage · wrote on 16 Feb 2021, 18:18

Unfortunately, I am downgrading too. There are modules that I need in my app like QtGraphicalEffects and AndroidExtras. If anyone know about a way to use them in QT 6 I would really appreciate instructions. Thanks!

Hitokage · S SGaist 1 Dec 2020, 18:50

@SGaist Does Qt 5 Core Compatibility contain all the old modules? Is it a solution?

SGaist · 16 Feb 2021, 19:38

Right from the link you posted:

The Qt 5 Core Compat module contains the Qt Core APIs which will be no longer supported in Qt 6 and therefore were removed from Qt 6.

So no it won't contain anything and everything being dropped for Qt 6.

Take a look at the checklist for Qt 6.0 inclusion to have an idea of what is planned for which release of Qt 6. As noted, Qt 6.0 (emphasis on .0) is not a drop in replacement for Qt 5.

Hitokage · S SGaist 16 Feb 2021, 19:11

@SGaist I see, thanks. So waiting :D. Umm what does The RHI port supports 17 out of 25 effects. mean? Is there any QML accessible API for them?
Sorry for the questions. I just got quite surprised when I installed QT 6 and tried to run my project....yea I know...keep the old versions until it stops working :D

SGaist · 16 Feb 2021, 19:50

@Hitokage said in QtGraphicalEffects not available in Qt6 (qml):

The RHI port supports 17 out of 25 effects. mean?

Literally that 8 effects have been dropped for various reasons.

@Hitokage said in QtGraphicalEffects not available in Qt6 (qml):

Is there any QML accessible API for them?

What do you mean by that ? AFAIK, these are QML effects.

Hitokage · S SGaist 16 Feb 2021, 19:46

@SGaist Well, we had to import QtGraphicalEffects. Now, we can't. So how do we access those now? Or what does it mean that RHI supports them?

SGaist · 16 Feb 2021, 19:59

As noted in the wiki page I linked, it's not available at the time of Qt 6.0 so it will be later. Either 6.1 or 6.2.

Hitokage · S SGaist 16 Feb 2021, 19:56

@SGaist I see! Thank you very much! I guess that I might as well manually replace some of the effects by using ShaderEffect.

Shazter · 12 Mar 2021, 20:01

Literally that 8 effects have been dropped for various reasons.

Will be this effects introduced with new versions 6.xx or will these effects forever removed or do they plan to use here a commercial license only to earn more money?
If they remove these effects, then Qt6.x is a downgrade to Qt5 in this area? If they change to commercial license only via Marketplace for all effects, then open source users/supporter leaking of feature set.
Qt Design Studio 2.0 uses the layer.effect which is correct from my point of view, but is only possible to apply one effect. layer.effect shall support a array of effects, instead of use a container which is currently the solution. I think an array of effects fits more to external Tools like Photoshop incase Qt plans to add effects export for Qt PSD Bridge.
Does somebody saw the development / marketing plans for my questions above somewhere e.g. Qt JIRA etc?

SGaist · wrote on 12 Mar 2021, 20:01

@Shazter said in QtGraphicalEffects not available in Qt6 (qml):

Will be this effects introduced with new versions 6.xx or will these effects forever removed or do they plan to use here a commercial license only to earn more money?

To the best of my knowledge, no. They have been removed for technical reasons.

@Shazter said in QtGraphicalEffects not available in Qt6 (qml):

If they remove these effects, then Qt6.x is a downgrade to Qt5 in this area? If they change to commercial license only via Marketplace for all effects, then open source users/supporter leaking of feature set.

See above.

@Shazter said in QtGraphicalEffects not available in Qt6 (qml):

Qt Design Studio 2.0 uses the layer.effect which is correct from my point of view, but is only possible to apply one effect. layer.effect shall support a array of effects, instead of use a container which is currently the solution. I think an array of effects fits more to external Tools like Photoshop incase Qt plans to add effects export for Qt PSD Bridge.

This is a user forum. Use the bug report system for feature request.

@Shazter said in QtGraphicalEffects not available in Qt6 (qml):

Does somebody saw the development / marketing plans for my questions above somewhere e.g. Qt JIRA etc?

Marketing plans are not something discussed outside the company AFAIK. For the development, search the Epics in Jira, there are also several blog articles as well as conversation on the development mailing list.

kshegunov · wrote on 13 Mar 2021, 03:01

@Shazter said in QtGraphicalEffects not available in Qt6 (qml):

If they remove these effects, then Qt6.x is a downgrade to Qt5 in this area? If they change to commercial license only via Marketplace for all effects, then open source users/supporter leaking of feature set.

The wiki page does say that the license is being changed to BSD/Commercial, so heads up.

Hitokage · wrote on 14 Mar 2021, 09:42

Seems like they are present when using desktop version in the latest 6.1 preview.

Cyrille de Brebisson · 2 Apr 2021, 18:29

Hello,

Where do you see them? I am on windows, QT6.1.0-beta2 and I do not see them.
Is there something extra that I need to install?

Cyrille

Hitokage · wrote on 2 Apr 2021, 18:29

@Cyrille-de-Brebisson I am not sure but when I updated to that preview (tried even the current one) I can compile my code with them again. Using Linux. Not sure how can I check what modules are currently installed in my distribution.

Hitokage · 23 Feb 2022, 10:08

Sorry @Cyrille-de-Brebisson for the misleading information. It's a bit late but here is the right solution for all the people who need to use this module in QT6:

git clone git://code.qt.io/qt/qtgraphicaleffects.git
cd qtgraphicaleffects/
git checkout 59ab3e11433a5157aac0f3af7c0d7fe70a373373
cd ..
~/Qt/6.2.1/gcc_64/bin/qmake qtgraphicaleffects
make
cp qml/QtGraphicalEffects ~/Qt/6.2.1/gcc_64/qml/ -r

So I cloned the module code, got a commit before the complete removal of the source files. Compiled and copied the result to the QT distribution directory.
Then replace all the imports:

import QtGraphicalEffects 1.0

with

import Qt5Compat.GraphicalEffects

AM.B · wrote on 23 Feb 2022, 10:08

@Hitokage Great, but

import QtGraphicalEffects 1.0

works fine & Qt5Compat.GraphicalEffects is not available for me.

Note that in qml/QtGraphicalEffects directory there is no *.qml file exist, so for example I couldn't use OpacityMask in my code. In order to use it or any of the following components in your source code:

BrightnessContrast
Colorize
ColorOverlay
ConicalGradient
Desaturate
Displace
DropShadow
FastBlur
FastGlow
GammaAdjust
Glow
HueSaturation
LevelAdjust
LinearGradient
OpacityMask
RadialGradient
RectangularGlow
ThresholdMask

you should also run these command which make QtGraphicalEffects ready to use in Qt6:

$  find qtgraphicaleffects/src/effects/ -maxdepth 1 -name \*.qml -exec cp {} ~/Qt/<VERSION>/gcc_64/qml/QtGraphicalEffects \;
$  cp qtgraphicaleffects/src/effects/private/ ~/Qt/<VERSION>/gcc_64/qml/QtGraphicalEffects -r

Anuj Chaudhary · wrote on 17 Oct 2022, 05:41

@mnesarco Hi mnesarco
QtGraphicalEffects not available in Qt6 (qml) but we can use alternate way
-> import Qt5Compat.GraphicalEffects