How to setup Ogre3D in Qt Creator with MinGW

8Observer8 · wrote on 23 Oct 2021, 15:30

Hello,

I built Ogre3D with CMake GUI and MingGW statically. I used MinGW from Qt from here: C:\Qt5\Tools\mingw810_32\bin.

Now I have libraries (.a) for Ogre3D. I create an Empty Project with qmake. It works with SFML but I cannot run this simple example from Ogre3D repository: BasicTutorial1.cpp

I included all libraries from Ogre3D. But I have 598 errors. My setttings:

CONFIG += c++11
CONFIG -= console

INCLUDEPATH += "E:\_Projects\Temp\ogre-13.1.1\dist\include"
INCLUDEPATH += "E:\_Projects\Temp\ogre-13.1.1\OgreMain\include"
INCLUDEPATH += "E:\_Projects\Temp\ogre-13.1.1\Components\Bites\include"
INCLUDEPATH += "E:\_Projects\Temp\ogre-13.1.1\Components\RTShaderSystem\include"

LIBS += -L"E:\_Projects\Temp\ogre-13.1.1\dist\lib"
#LIBS += -lCodec_STBIStatic -lOgreBitesStatic -lOgreMainStatic -lOgreRTShaderSystemStatic -lPlugin_ParticleFXStatic
LIBS += -lCodec_STBIStatic -lDefaultSamples -lOgreBitesStatic -lOgreGLSupportStatic -lOgreMainStatic -lOgreMeshLodGeneratorStatic -lOgreOverlayStatic -lOgrePagingStatic -lOgrePropertyStatic -lOgreRTShaderSystemStatic -lOgreTerrainStatic -lOgreVolumeStatic -lPlugin_BSPSceneManagerStatic -lPlugin_DotSceneStatic -lPlugin_OctreeSceneManagerStatic -lPlugin_OctreeZoneStatic -lPlugin_ParticleFXStatic -lPlugin_PCZSceneManagerStatic -lRenderSystem_GL3PlusStatic -lRenderSystem_GLES2Static -lRenderSystem_GLStatic

LIBS += -L"E:\_Projects\Temp\ogre-13.1.1\dist\Dependencies\lib"
LIBS += -lSDL2 -lfreetype -lpugixml

LIBS += -lopengl32

SOURCES += \
main.cpp

Errors:

8Observer8 · wrote on 25 Oct 2021, 18:37

It was a problem with the libs order: Why does the order in which libraries are linked sometimes cause errors in GCC?

I found the right order:

CONFIG += c++11
CONFIG -= console

INCLUDEPATH += "E:\_Projects\Temp\ogre-13.1.1\dist\include"
INCLUDEPATH += "E:\_Projects\Temp\ogre-13.1.1\OgreMain\include"
INCLUDEPATH += "E:\_Projects\Temp\ogre-13.1.1\Components\Bites\include"
INCLUDEPATH += "E:\_Projects\Temp\ogre-13.1.1\Components\RTShaderSystem\include"

LIBS += -L"E:\_Projects\Temp\ogre-13.1.1\dist\lib"
#LIBS += -lCodec_STBIStatic -lOgreBitesStatic -lOgreMainStatic -lOgreRTShaderSystemStatic -lPlugin_ParticleFXStatic
LIBS += -lDefaultSamples -lOgreBitesStatic -lRenderSystem_GL3PlusStatic -lOgreGLSupportStatic -lOgreMeshLodGeneratorStatic -lOgreOverlayStatic -lOgrePagingStatic -lOgrePropertyStatic -lOgreRTShaderSystemStatic -lOgreVolumeStatic -lPlugin_BSPSceneManagerStatic -lPlugin_DotSceneStatic -lPlugin_OctreeSceneManagerStatic -lPlugin_OctreeZoneStatic -lPlugin_ParticleFXStatic -lPlugin_PCZSceneManagerStatic -lRenderSystem_GLES2Static -lRenderSystem_GLStatic -lOgreMainStatic -lOgreTerrainStatic -lCodec_STBIStatic -lzlibstatic

LIBS += -L"E:\_Projects\Temp\ogre-13.1.1\dist\Dependencies\lib"
LIBS += -lSDL2main -lSDL2.dll -lfreetype -lpugixml

LIBS += -lopengl32 -lgdi32

SOURCES += \
main.cpp

SGaist · wrote on 23 Oct 2021, 18:22

Hi,

Are you using a pre-built version of Ogre ?
Which compiler was used to build it ?
Is the build for the correct architecture ?

8Observer8 · wrote on 23 Oct 2021, 19:47

I use Windows 10 64-bit. I have only one compiler on my laptop. It is MinGW 32-bit that is from Qt 5.15.2 32-bit:

>> mingw32-make -version 
GNU Make 4.2.1
Built for i686-w64-mingw32

I used this compiler with "CMake GUI" that is 32-bit:

to build Ogre 13.1.1 from source:

I clicked "Configure". I checked "Static Plugins" and "Ogre Static". I clicked "Configure" again. I clicked "Generate". After generating (it takes ~20 minutes) I typed this command for building: mingw32-make. After this I have these libraries:

libCodec_STBIStatic.a
libDefaultSamples.a
libOgreBitesStatic.a
libOgreGLSupportStatic.a
libOgreMainStatic.a
libOgreMeshLodGeneratorStatic.a
libOgreOverlayStatic.a
libOgrePagingStatic.a
libOgrePropertyStatic.a
libOgreRTShaderSystemStatic.a
libOgreTerrainStatic.a
libOgreVolumeStatic.a
libPlugin_BSPSceneManagerStatic.a
libPlugin_DotSceneStatic.a
libPlugin_OctreeSceneManagerStatic.a
libPlugin_OctreeZoneStatic.a
libPlugin_ParticleFXStatic.a
libPlugin_PCZSceneManagerStatic.a
libRenderSystem_GL3PlusStatic.a
libRenderSystem_GLES2Static.a
libRenderSystem_GLStatic.a

And these:

8Observer8 · wrote on 23 Oct 2021, 20:00

I have Python 64-bit because I tried to use the ogre-python module. This module do not work with Python 32-bit.

SGaist · wrote on 23 Oct 2021, 20:25

You should double check the architecture anyway.

I would also start with a shared build of Ogre as it often is easier to link to.

8Observer8 · wrote on 25 Oct 2021, 18:37

It was a problem with the libs order: Why does the order in which libraries are linked sometimes cause errors in GCC?

I found the right order:

CONFIG += c++11
CONFIG -= console

INCLUDEPATH += "E:\_Projects\Temp\ogre-13.1.1\dist\include"
INCLUDEPATH += "E:\_Projects\Temp\ogre-13.1.1\OgreMain\include"
INCLUDEPATH += "E:\_Projects\Temp\ogre-13.1.1\Components\Bites\include"
INCLUDEPATH += "E:\_Projects\Temp\ogre-13.1.1\Components\RTShaderSystem\include"

LIBS += -L"E:\_Projects\Temp\ogre-13.1.1\dist\lib"
#LIBS += -lCodec_STBIStatic -lOgreBitesStatic -lOgreMainStatic -lOgreRTShaderSystemStatic -lPlugin_ParticleFXStatic
LIBS += -lDefaultSamples -lOgreBitesStatic -lRenderSystem_GL3PlusStatic -lOgreGLSupportStatic -lOgreMeshLodGeneratorStatic -lOgreOverlayStatic -lOgrePagingStatic -lOgrePropertyStatic -lOgreRTShaderSystemStatic -lOgreVolumeStatic -lPlugin_BSPSceneManagerStatic -lPlugin_DotSceneStatic -lPlugin_OctreeSceneManagerStatic -lPlugin_OctreeZoneStatic -lPlugin_ParticleFXStatic -lPlugin_PCZSceneManagerStatic -lRenderSystem_GLES2Static -lRenderSystem_GLStatic -lOgreMainStatic -lOgreTerrainStatic -lCodec_STBIStatic -lzlibstatic

LIBS += -L"E:\_Projects\Temp\ogre-13.1.1\dist\Dependencies\lib"
LIBS += -lSDL2main -lSDL2.dll -lfreetype -lpugixml

LIBS += -lopengl32 -lgdi32

SOURCES += \
main.cpp

8Observer8 · wrote on 26 Oct 2021, 08:09

My first static Release in Ogre3D and Qt Creator: FirstExample_Ogre3D_QtCreator.zip (8.83 MB)

The BasicTutorial1.cpp example loads the "ogrehead.mesh". In order to load models you have to set up the "resources.cfg" file:

resources.cfg

[Models]
FileSystem=.\

main.cpp

#include "Ogre.h"
#include "OgreApplicationContext.h"
#include "OgreInput.h"
#include "OgreRTShaderSystem.h"
#include <iostream>

using namespace Ogre;
using namespace OgreBites;

class BasicTutorial1
        : public ApplicationContext
        , public InputListener
{
public:
    BasicTutorial1();
    virtual ~BasicTutorial1() {}

    void setup();
    bool keyPressed(const KeyboardEvent& evt);
};


BasicTutorial1::BasicTutorial1()
    : ApplicationContext("OgreTutorialApp")
{
}


void BasicTutorial1::setup()
{
    // do not forget to call the base first
    ApplicationContext::setup();
    addInputListener(this);

    // get a pointer to the already created root
    Root* root = getRoot();
    SceneManager* scnMgr = root->createSceneManager();

    // register our scene with the RTSS
    RTShader::ShaderGenerator* shadergen = RTShader::ShaderGenerator::getSingletonPtr();
    shadergen->addSceneManager(scnMgr);

    // -- tutorial section start --
    //! [turnlights]
    scnMgr->setAmbientLight(ColourValue(0.5, 0.5, 0.5));
    //! [turnlights]

    //! [newlight]
    Light* light = scnMgr->createLight("MainLight");
    SceneNode* lightNode = scnMgr->getRootSceneNode()->createChildSceneNode();
    lightNode->attachObject(light);
    //! [newlight]

    //! [lightpos]
    lightNode->setPosition(20, 80, 50);
    //! [lightpos]

    //! [camera]
    SceneNode* camNode = scnMgr->getRootSceneNode()->createChildSceneNode();

    // create the camera
    Camera* cam = scnMgr->createCamera("myCam");
    cam->setNearClipDistance(5); // specific to this sample
    cam->setAutoAspectRatio(true);
    camNode->attachObject(cam);
    camNode->setPosition(0, 0, 140);

    // and tell it to render into the main window
    getRenderWindow()->addViewport(cam);
    //! [camera]

    //! [entity1]
    Entity* ogreEntity = scnMgr->createEntity("ogrehead.mesh");
    //! [entity1]

    //! [entity1node]
    SceneNode* ogreNode = scnMgr->getRootSceneNode()->createChildSceneNode();
    //! [entity1node]

    //! [entity1nodeattach]
    ogreNode->attachObject(ogreEntity);
    //! [entity1nodeattach]

    //! [cameramove]
    camNode->setPosition(0, 47, 222);
    //! [cameramove]

    //! [entity2]
    Entity* ogreEntity2 = scnMgr->createEntity("ogrehead.mesh");
    SceneNode* ogreNode2 = scnMgr->getRootSceneNode()->createChildSceneNode(Vector3(84, 48, 0));
    ogreNode2->attachObject(ogreEntity2);
    //! [entity2]

    //! [entity3]
    Entity* ogreEntity3 = scnMgr->createEntity("ogrehead.mesh");
    SceneNode* ogreNode3 = scnMgr->getRootSceneNode()->createChildSceneNode();
    ogreNode3->setPosition(0, 104, 0);
    ogreNode3->setScale(2, 1.2, 1);
    ogreNode3->attachObject(ogreEntity3);
    //! [entity3]

    //! [entity4]
    Entity* ogreEntity4 = scnMgr->createEntity("ogrehead.mesh");
    SceneNode* ogreNode4 = scnMgr->getRootSceneNode()->createChildSceneNode();
    ogreNode4->setPosition(-84, 48, 0);
    ogreNode4->roll(Degree(-90));
    ogreNode4->attachObject(ogreEntity4);
    //! [entity4]

    // -- tutorial section end --
}


bool BasicTutorial1::keyPressed(const KeyboardEvent& evt)
{
    if (evt.keysym.sym == SDLK_ESCAPE)
    {
        getRoot()->queueEndRendering();
    }
    return true;
}


int main(int argc, char **argv)
{
    try
    {
        BasicTutorial1 app;
        app.initApp();
        app.getRoot()->startRendering();
        app.closeApp();
    }
    catch (const std::exception& e)
    {
        std::cerr << "Error occurred during execution: " << e.what() << '\n';
        return 1;
    }

    return 0;
}

8Observer8 · wrote on 27 Oct 2021, 13:27

I did not make "mingw32-make install" after "mingw32-make". I set CMAKE_INSTALL_PREFIX to install path in "CMake GUI". After the "mingw32-make install" command all content will be in one place:

the .pro is more clear:

INCLUDEPATH += "E:\ProgramFiles\ogre-13.1.1\include\OGRE"
INCLUDEPATH += "E:\ProgramFiles\ogre-13.1.1\include\OGRE\Bites"
INCLUDEPATH += "E:\ProgramFiles\ogre-13.1.1\include\OGRE\RTShaderSystem"

LIBS += -L"E:\ProgramFiles\ogre-13.1.1\lib"
LIBS += -L"E:\ProgramFiles\ogre-13.1.1\lib\OGRE"

LIBS += -lOgreBitesStatic -lRenderSystem_GL3PlusStatic -lOgreGLSupportStatic -lOgreMeshLodGeneratorStatic -lOgreOverlayStatic -lOgrePagingStatic -lOgrePropertyStatic -lOgreRTShaderSystemStatic -lOgreVolumeStatic -lPlugin_BSPSceneManagerStatic -lPlugin_DotSceneStatic -lPlugin_OctreeSceneManagerStatic -lPlugin_OctreeZoneStatic -lPlugin_ParticleFXStatic -lPlugin_PCZSceneManagerStatic -lRenderSystem_GLES2Static -lRenderSystem_GLStatic -lOgreMainStatic -lOgreTerrainStatic -lCodec_STBIStatic -lzlibstatic
LIBS += -lSDL2main -lSDL2.dll -lfreetype -lpugixml
LIBS += -lopengl32 -lgdi32