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How to create a QOpenGLContext from a GLFW EGL window?

I wanted to embed a QML scene into a GLFW window using QQuickRenderControl. From what I can see, one of the first steps is to get the OpenGL context from GLFW, and this is where I run into an issue. My code crashes on the line: QOpenGLContext \*glfwQtContext = QNativeInterface::QEGLContext::fromNative(eglContext, eGLDisplay);. Am I doing something wrong? Configuration: Qt 6.9, Ubuntu 24.04 Wayland, GLFW 3.4.

#include <QGuiApplication>
#include <QCoreApplication>
#include <QOpenGLContext>
#include <QOffscreenSurface>

//#define GLFW_EXPOSE_NATIVE_WAYLAND
#define GLFW_EXPOSE_NATIVE_EGL

#include <GLFW/glfw3.h>
#include <GLFW/glfw3native.h>

#include <iostream>

int main(int argc, char *argv[])
{
//qputenv("QT_QPA_PLATFORM","eglfs");
qputenv("QT_QPA_PLATFORM","wayland");
QGuiApplication app(argc, argv);

if(!glfwInit()){
std::cerr << "Failed initialize glfw";
exit(1);
}

glfwWindowHint(GLFW_CONTEXT_CREATION_API, GLFW_NATIVE_CONTEXT_API);
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
glfwWindowHint(GLFW_OPENGL_ANY_PROFILE, GLFW_OPENGL_CORE_PROFILE);

GLFWwindow* window = glfwCreateWindow(800, 600, "Qml in GLFW window", nullptr, nullptr);
if(!window){
std::cout << "Wndow creation failed!";
exit(EXIT_FAILURE);
}else{
std::cout << "Sucessful window creation!" << std::endl;
}

glfwMakeContextCurrent(window);

EGLContext eglContext = glfwGetEGLContext(window);
EGLDisplay eGLDisplay = glfwGetEGLDisplay();
QOpenGLContext *glfwQtContext = QNativeInterface::QEGLContext::fromNative(eglContext, eGLDisplay);

glfwQtContext->create();

if(!glfwQtContext){
std::cout << "[ERROR] Failded to create QOpenGLContext from glfw context !!" << std::endl;
exit(EXIT_FAILURE);
}else{
std::cout << "[SUCCESS] Successfull create QOpenGLContext from glfw context !!" << std::endl;
}

return 0;
}

Additionally, I tried doing something similar with GLX, and it seems that the context is created successfully—the program doesn't crash, though I haven't tried rendering yet, as I am much more interested in the EGL version.

#include <QGuiApplication>
#include <QCoreApplication>
#include <QOpenGLContext>
#include <QOffscreenSurface>
#define GLFW_EXPOSE_NATIVE_GLX
#include <GLFW/glfw3.h>
#include <GLFW/glfw3native.h>
#include <iostream>

int main(int argc, char *argv[])
{
QGuiApplication app(argc, argv);

if(!glfwInit()){
std::cerr << "Failed initialize glfw";
exit(1);
}

glfwWindowHint(GLFW_CONTEXT_CREATION_API, GLFW_NATIVE_CONTEXT_API);
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
glfwWindowHint(GLFW_OPENGL_ANY_PROFILE, GLFW_OPENGL_CORE_PROFILE);

GLFWwindow* window = glfwCreateWindow(800, 600, "Qml in GLFW window", nullptr, nullptr);
if(!window){
std::cout << "Wndow creation failed!";
exit(EXIT_FAILURE);
}else{
std::cout << "Sucessful window creation!" << std::endl;
}

glfwMakeContextCurrent(window);

GLXContext glxContext = glfwGetGLXContext(window);
QOpenGLContext *glfwQtContext = QNativeInterface::QGLXContext::fromNative(glxContext);

glfwQtContext->create();

if(!glfwQtContext){
std::cout << "[ERROR] Failded to create QOpenGLContext from glfw context !!" << std::endl;
exit(EXIT_FAILURE);
}else{
std::cout << "[SUCCESS] Successfull create QOpenGLContext from glfw context !!" << std::endl;
}

QOffscreenSurface surface;
glfwQtContext->makeCurrent(&surface);

return 0;
}

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