Deploying Qt3D application using MinGW 32. Unable to find renderer plugin for opengl

8Observer8

When I run my simple example in debug mode from Qt Creator I see these messages:

QString::arg: Argument missing: " Max Work Group Size: 1536, 1024, 64\n Max Work Group Count: 65535, 65535, 65535\n Max Invocations: 65535\n Max Shared Memory Size: 1536\n" , 49152 QObject::connect(QOpenGLContext, Unknown): invalid nullptr parameter
My program works fine:

And when I switch to Release mode I see the same behavior like above. But I what to make a standalone application for running on another computers without Qt.

I added this dll-files to Release folder:

platforms/qwindows.dll
libgcc_s_dw2-1.dll
libstdc++-6.dll
libwinpthread-1.dll
Qt5Concurrent.dll
Qt5Core.dll
Qt5Gamepad.dll
Qt5Gui.dll
Qt5Network.dll
Qt53DCore.dll
Qt53DExtras.dll
Qt53DInput.dll
Qt53DLogic.dll
Qt53DRender.dll

But when I try to run Release version from Qt Creator I get this message in console:

Unable to find renderer plugin for opengl
23:00:29: The program has unexpectedly finished.

And I get this exception:

Fail Fast Exception. A fail fast exception occurred. Exception handlers will not be invoked and the process will be terminated immediately.

My source code:

Bullet3Qt3D.pro

QT       += 3dcore 3drender 3dlogic 3dextras

INCLUDEPATH += "E:\Libs\Bullet3-2.89\include"

LIBS += -L"E:\Libs\Bullet3-2.89\lib"
LIBS += -lBulletDynamics -lBulletCollision -lLinearMath

SOURCES += \
    main.cpp

RESOURCES += \
    Models.qrc

main.cpp

#ifdef _WIN32
#include <windows.h>
extern "C" __declspec(dllexport) DWORD NvOptimusEnablement = 0x00000001;
extern "C" __declspec(dllexport) DWORD AmdPowerXpressRequestHighPerformance = 0x00000001;
#endif

#include <QGuiApplication>
#include <QEntity>
#include <Qt3DWindow>
#include <btBulletDynamicsCommon.h>
#include <QCamera>
#include <QPointLight>
#include <QTransform>
#include <QSceneLoader>
#include <QOrbitCameraController>
#include <QPhongMaterial>

int main(int argc, char *argv[])
{
    QGuiApplication::setAttribute(Qt::AA_UseDesktopOpenGL);
    QGuiApplication app(argc, argv);
    Qt3DExtras::Qt3DWindow view;
    view.setGeometry(500, 100, 270, 270);

    Qt3DRender::QCamera *camera = view.camera();
    camera->lens()->setPerspectiveProjection(60.0f, view.width()/(float)view.height(), 0.1f, 1000.0f);
    camera->setPosition(QVector3D(0.0f, 0.0f, 30.0f));
    camera->setViewCenter(QVector3D(0.0f, 0.0f, 0.0f));

    Qt3DCore::QEntity *rootEntity = new Qt3DCore::QEntity;

    Qt3DCore::QEntity *lightEntity = new Qt3DCore::QEntity(rootEntity);
    Qt3DRender::QPointLight *pointLight = new Qt3DRender::QPointLight(lightEntity);
    Qt3DCore::QTransform *lightTransform = new Qt3DCore::QTransform(rootEntity);
    lightTransform->setTranslation(QVector3D(10.0f, 20.0f, 30.0f));
    lightEntity->addComponent(pointLight);
    lightEntity->addComponent(lightTransform);

    Qt3DCore::QEntity *cubeEntity = new Qt3DCore::QEntity(rootEntity);
    Qt3DRender::QSceneLoader *sceneLoader = new Qt3DRender::QSceneLoader(cubeEntity);
    sceneLoader->setSource(QUrl("qrc:/Models/Cube.obj"));
    cubeEntity->addComponent(sceneLoader);
    Qt3DCore::QTransform *cubeTransform = new Qt3DCore::QTransform(cubeEntity);
    cubeTransform->setScale(7.0f);
    cubeEntity->addComponent(cubeTransform);
    QStringList list = sceneLoader->entityNames();

    Qt3DExtras::QPhongMaterial *material = new Qt3DExtras::QPhongMaterial(rootEntity);
    rootEntity->addComponent(material);

    Qt3DExtras::QOrbitCameraController *cameraController = new Qt3DExtras::QOrbitCameraController(rootEntity);
    cameraController->setCamera(camera);
    cameraController->setLookSpeed(180.0f);
    cameraController->setLinearSpeed(50.0f);

    view.setRootEntity(rootEntity);
    view.show();
    return app.exec();
}

8Observer8

I solved this problem. I copied the folder "renderers/openglrenderer.dll" to the release folder from "C:\Qt\5.15.0\mingw81_32\plugins"

8Observer8

These is a list what you need to move your Qt3D application on another computer. It requires 48 MB

n8behavior

Exactly what I needed...tx!

AtomicZons

Hi @8Observer8,
thanks for providing the answer to your own question!
In your case, does the solution also remove the "Argument missing" and "invalid nullptr parameter" messages?
In my case it did not and I am wondering wether they are potentially problematic or not.
Cheers

vmetayer

Hi, thanks for the answer to this problem.

I ran into it while trying to use QT3D for Qt6, even after copying the plugins folder.
I found the solution so i post it here for anyone having this problem with Qt6 :

Qt6OpenGL.dll should also be copied next to the executable for it to work.

8Observer8

I built Qt to static release and compressed EXE using UPX. My EXE has only 7 MBytes. But I use pure OpenGL without Qt3D.

Cube_OpenGLES20_Qt5Cpp.zip