Accepting request 537940 from KDE:Qt5

- Restore working version of
  disable-gpu-when-using-nouveau-boo-1005323.diff

OBS-URL: https://build.opensuse.org/request/show/537940
OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/libqt5-qtwebengine?expand=0&rev=26

disable-gpu-when-using-nouveau-boo-1005323.diff

@@ -50,3 +50,30 @@ Index: qtwebengine-opensource-src-5.9.2/src/core/web_engine_context.cpp
  } // namespace
  
  namespace QtWebEngineCore {
+@@ -366,6 +400,17 @@ WebEngineContext::WebEngineContext()
+ 
+     const char *glType = 0;
+ #ifndef QT_NO_OPENGL
++    bool disableGpu = qEnvironmentVariableIsSet("QT_WEBENGINE_DISABLE_GPU");
++
++    if (!qEnvironmentVariableIsSet("QT_WEBENGINE_DISABLE_NOUVEAU_WORKAROUND") && openGLVendor() == QStringLiteral("nouveau"))
++    {
++        qWarning() << "Nouveau openGL driver detected. Qt WebEngine will disable usage of the GPU.\n"
++                      "Note: you can set the QT_WEBENGINE_DISABLE_NOUVEAU_WORKAROUND\n"
++                      "environment variable before running this application, but this is \n"
++                      "not recommended since this usually causes applications to crash as\n"
++                      "Nouveau openGL drivers don't support multithreaded rendering";
++        disableGpu = true;
++    }
+ 
+     bool tryGL =
+             !usingANGLE()
+@@ -377,7 +422,7 @@ WebEngineContext::WebEngineContext()
+                 || enableWebGLSoftwareRendering
+ #endif
+                 )
+-            && !usingQtQuick2DRenderer();
++            && !usingQtQuick2DRenderer() && !disableGpu;
+ 
+     if (tryGL) {
+         if (qt_gl_global_share_context() && qt_gl_global_share_context()->isValid()) {

libqt5-qtwebengine.changes

@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Tue Oct 31 16:49:12 UTC 2017 - fabian@ritter-vogt.de
+
+- Restore working version of
+  disable-gpu-when-using-nouveau-boo-1005323.diff
+
 -------------------------------------------------------------------
 Sun Oct  8 14:12:31 UTC 2017 - lbeltrame@kde.org