diff --git a/libkwineffects/kwinglplatform.cpp b/libkwineffects/kwinglplatform.cpp
index 83c1c475bf..1869321f5e 100644
--- a/libkwineffects/kwinglplatform.cpp
+++ b/libkwineffects/kwinglplatform.cpp
@@ -504,7 +504,6 @@ GLPlatform::GLPlatform()
       m_mesaVersion(0),
       m_galliumVersion(0),
       m_looseBinding(false),
-      m_directRendering(false),
       m_supportsGLSL(false),
       m_limitedGLSL(false),
       m_textureNPOT(false),
@@ -563,7 +562,6 @@ void GLPlatform::detect(OpenGLPlatformInterface platformInterface)
     }
 
     if (platformInterface == EglPlatformInterface) {
-        m_directRendering = true;
 #ifdef KWIN_HAVE_OPENGLES
         m_supportsGLSL = true;
         m_textureNPOT = true;
@@ -576,11 +574,7 @@ void GLPlatform::detect(OpenGLPlatformInterface platformInterface)
 #endif
     } else if (platformInterface == GlxPlatformInterface) {
 #ifndef KWIN_HAVE_OPENGLES
-        GLXContext ctx = glXGetCurrentContext();
-        m_directRendering = glXIsDirect(display(), ctx);
-
-        m_supportsGLSL = m_directRendering &&
-                         m_extensions.contains("GL_ARB_shader_objects") &&
+        m_supportsGLSL = m_extensions.contains("GL_ARB_shader_objects") &&
                          m_extensions.contains("GL_ARB_fragment_shader") &&
                          m_extensions.contains("GL_ARB_vertex_shader");
 
@@ -893,7 +887,6 @@ void GLPlatform::printResults() const
     if (kernelVersion() > 0)
         print(QStringLiteral("Linux kernel version:"), versionToString(m_kernelVersion));
 
-    print(QStringLiteral("Direct rendering:"), m_directRendering ? QStringLiteral("yes") : QStringLiteral("no"));
     print(QStringLiteral("Requires strict binding:"), !m_looseBinding ? QStringLiteral("yes") : QStringLiteral("no"));
     print(QStringLiteral("GLSL shaders:"), m_supportsGLSL ? (m_limitedGLSL ? QStringLiteral("limited") : QStringLiteral("yes")) : QStringLiteral("no"));
     print(QStringLiteral("Texture NPOT support:"), m_textureNPOT ? (m_limitedNPOT ? QStringLiteral("limited") : QStringLiteral("yes")) : QStringLiteral("no"));
@@ -1031,11 +1024,6 @@ const QByteArray &GLPlatform::glShadingLanguageVersionString() const
     return m_glsl_version;
 }
 
-bool GLPlatform::isDirectRendering() const
-{
-    return m_directRendering;
-}
-
 bool GLPlatform::isLooseBinding() const
 {
     return m_looseBinding;
diff --git a/libkwineffects/kwinglplatform.h b/libkwineffects/kwinglplatform.h
index a3f3d150ec..66050762a3 100644
--- a/libkwineffects/kwinglplatform.h
+++ b/libkwineffects/kwinglplatform.h
@@ -286,11 +286,6 @@ public:
      * @since 4.9
      **/
     const QByteArray &glShadingLanguageVersionString() const;
-    /**
-     * @returns Whether a direct rendering OpenGL context is used.
-     * @since 4.9
-     **/
-    bool isDirectRendering() const;
     /**
      * @returns Whether the driver supports loose texture binding.
      * @since 4.9
@@ -361,7 +356,6 @@ private:
     qint64 m_serverVersion;
     qint64 m_kernelVersion;
     bool m_looseBinding: 1;
-    bool m_directRendering: 1;
     bool m_supportsGLSL: 1;
     bool m_limitedGLSL: 1;
     bool m_textureNPOT: 1;
diff --git a/workspace.cpp b/workspace.cpp
index ea86af204c..65f84572c2 100644
--- a/workspace.cpp
+++ b/workspace.cpp
@@ -1451,11 +1451,6 @@ QString Workspace::supportInformation() const
                 support.append(QStringLiteral("Linux kernel version: ") + GLPlatform::versionToString(platform->kernelVersion()) + QStringLiteral("\n"));
 
             support.append(QStringLiteral("Direct rendering: "));
-            if (platform->isDirectRendering()) {
-                support.append(QStringLiteral("yes\n"));
-            } else {
-                support.append(QStringLiteral("no\n"));
-            }
             support.append(QStringLiteral("Requires strict binding: "));
             if (!platform->isLooseBinding()) {
                 support.append(QStringLiteral("yes\n"));