QtGraphicalEffects not available in Qt6 (qml)

mnesarco

Hi Friends,
I have tried to use DropShadow from QtGraphicalEffects in a Qt6 app, but it is not found. Is there any specific module to be added in my cmake list? In Qt5.15.2 it works out of the box.

Thanks in advance.

JKSH

Hi @mnesarco, Qt Graphical Effects is not part of Qt 6.0:

mnesarco

Thank you @JKSH . Is there a way to use it in Qt6 as an external library? Or at least is there a way to add a drop shadow to a QuickItem in Qt6?

Thanks.

SGaist

Hi,

From the looks of the report, you should be able to build the dev branch and test it with your code. Unless you are using one of the few effects that have been removed.

Diracsbracket

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Diracsbracket

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bolt

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

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

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

SGaist

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

@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

@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

@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

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

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

Shazter

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

@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

@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

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

Cyrille de Brebisson

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