diff --git a/debug_console.cpp b/debug_console.cpp
--- a/debug_console.cpp
+++ b/debug_console.cpp
@@ -22,7 +22,7 @@
 #include "client.h"
 #include "input_event.h"
 #include "main.h"
-#include "scene_opengl.h"
+#include "scene.h"
 #include "shell_client.h"
 #include "unmanaged.h"
 #include "wayland_server.h"
@@ -528,16 +528,16 @@
     m_ui->glVersionLabel->setText(GLPlatform::versionToString(gl->glVersion()));
     m_ui->glslLabel->setText(GLPlatform::versionToString(gl->glslVersion()));
 
-    auto extensionsString = [] (const QList<QByteArray> &extensions) {
+    auto extensionsString = [] (const auto &extensions) {
         QString text = QStringLiteral("<ul>");
         for (auto extension : extensions) {
             text.append(QStringLiteral("<li>%1</li>").arg(QString::fromLocal8Bit(extension)));
         }
         text.append(QStringLiteral("</ul>"));
         return text;
     };
 
-    m_ui->platformExtensionsLabel->setText(extensionsString(static_cast<SceneOpenGL*>(Compositor::self()->scene())->backend()->extensions()));
+    m_ui->platformExtensionsLabel->setText(extensionsString(Compositor::self()->scene()->openGLPlatformInterfaceExtensions()));
     m_ui->openGLExtensionsLabel->setText(extensionsString(openGLExtensions()));
 }
 
diff --git a/platform.cpp b/platform.cpp
--- a/platform.cpp
+++ b/platform.cpp
@@ -19,15 +19,14 @@
 *********************************************************************/
 #include "platform.h"
 #include <config-kwin.h>
-#include "abstract_egl_backend.h"
 #include "composite.h"
 #include "cursor.h"
 #include "effects.h"
 #include "input.h"
 #include "overlaywindow.h"
 #include "outline.h"
 #include "pointer_input.h"
-#include "scene_opengl.h"
+#include "scene.h"
 #include "screenedge.h"
 #include "wayland_server.h"
 
@@ -353,9 +352,7 @@
 bool Platform::supportsQpaContext() const
 {
     if (Compositor *c = Compositor::self()) {
-        if (SceneOpenGL *s = dynamic_cast<SceneOpenGL*>(c->scene())) {
-            return s->backend()->hasExtension(QByteArrayLiteral("EGL_KHR_surfaceless_context"));
-        }
+        return c->scene()->openGLPlatformInterfaceExtensions().contains(QByteArrayLiteral("EGL_KHR_surfaceless_context"));
     }
     return false;
 }
diff --git a/scene.h b/scene.h
--- a/scene.h
+++ b/scene.h
@@ -175,6 +175,15 @@
      **/
     virtual QImage *qpainterRenderBuffer() const;
 
+    /**
+     * The backend specific extensions (e.g. EGL/GLX extensions).
+     *
+     * Not the OpenGL (ES) extension!
+     *
+     * Default implementation returns empty list
+     **/
+    virtual QVector<QByteArray> openGLPlatformInterfaceExtensions() const;
+
 Q_SIGNALS:
     void frameRendered();
 
diff --git a/scene.cpp b/scene.cpp
--- a/scene.cpp
+++ b/scene.cpp
@@ -671,6 +671,11 @@
     return nullptr;
 }
 
+QVector<QByteArray> Scene::openGLPlatformInterfaceExtensions() const
+{
+    return QVector<QByteArray>{};
+}
+
 //****************************************
 // Scene::Window
 //****************************************
diff --git a/scene_opengl.h b/scene_opengl.h
--- a/scene_opengl.h
+++ b/scene_opengl.h
@@ -82,6 +82,8 @@
         return m_backend;
     }
 
+    QVector<QByteArray> openGLPlatformInterfaceExtensions() const override;
+
     /**
      * Copy a region of pixels from the current read to the current draw buffer
      */
diff --git a/scene_opengl.cpp b/scene_opengl.cpp
--- a/scene_opengl.cpp
+++ b/scene_opengl.cpp
@@ -1021,6 +1021,11 @@
     return !GLPlatform::instance()->isSoftwareEmulation();
 }
 
+QVector<QByteArray> SceneOpenGL::openGLPlatformInterfaceExtensions() const
+{
+    return m_backend->extensions().toVector();
+}
+
 //****************************************
 // SceneOpenGL2
 //****************************************