2 files changed, 7 insertions, 6 deletions
diff --git a/src/quick/scenegraph/qsgdefaultlayer.cpp b/src/quick/scenegraph/qsgdefaultlayer.cpp
index ad5b57ff83..78037a2fde 100644
--- a/src/quick/scenegraph/qsgdefaultlayer.cpp
+++ b/src/quick/scenegraph/qsgdefaultlayer.cpp
@@ -44,6 +44,7 @@
 
 #include <QtGui/QOpenGLFramebufferObject>
 #include <QtGui/QOpenGLFunctions>
+#include <QtGui/private/qopenglextensions_p.h>
 
 #include <QtQuick/private/qsgdepthstencilbuffer_p.h>
 
@@ -320,9 +321,9 @@ void QSGDefaultLayer::grab()
             if (m_context->openglContext()->format().samples() <= 1) {
                 m_multisampling = false;
             } else {
-                const QSet<QByteArray> extensions = m_context->openglContext()->extensions();
-                m_multisampling = extensions.contains(QByteArrayLiteral("GL_EXT_framebuffer_multisample"))
-                    && extensions.contains(QByteArrayLiteral("GL_EXT_framebuffer_blit"));
+                QOpenGLExtensions *e = static_cast<QOpenGLExtensions *>(funcs);
+                m_multisampling = e->hasOpenGLExtension(QOpenGLExtensions::FramebufferMultisample)
+                    && e->hasOpenGLExtension(QOpenGLExtensions::FramebufferBlit);
             }
             m_multisamplingChecked = true;
         }
diff --git a/src/quick/scenegraph/util/qsgdefaultpainternode.cpp b/src/quick/scenegraph/util/qsgdefaultpainternode.cpp
index 389b9e0b4e..9ffd1b4b08 100644
--- a/src/quick/scenegraph/util/qsgdefaultpainternode.cpp
+++ b/src/quick/scenegraph/util/qsgdefaultpainternode.cpp
@@ -238,9 +238,9 @@ void QSGDefaultPainterNode::updateGeometry()
 void QSGDefaultPainterNode::updateRenderTarget()
 {
     if (!m_extensionsChecked) {
-        const QSet<QByteArray> extensions = m_context->openglContext()->extensions();
-        m_multisamplingSupported = extensions.contains(QByteArrayLiteral("GL_EXT_framebuffer_multisample"))
-            && extensions.contains(QByteArrayLiteral("GL_EXT_framebuffer_blit"));
+        QOpenGLExtensions *e = static_cast<QOpenGLExtensions *>(QOpenGLContext::currentContext()->functions());
+        m_multisamplingSupported = e->hasOpenGLExtension(QOpenGLExtensions::FramebufferMultisample)
+            && e->hasOpenGLExtension(QOpenGLExtensions::FramebufferBlit);
         m_extensionsChecked = true;
     }