Add support for GPU bug list reading.

- Add support for reading out feature lists from GPU bug lists
  in Chromium format (supporting OS + version, exceptions lists,
  device ids and vendor ids).
  Add a overloads allowing for passing file name,
  data or JSON documents.

- Test reading in tst_qopenglconfig

- Prototypically have the Windows plugin read the file
  from the environment variable "QT_OPENGL_BUGLIST" and
  turn off renderers depending on the standard keyword
  "disable_d3d11" and newly introduced keywords
  "disable_d3d9", "disable_desktopgl".

- QT_OPENGL_BUGLIST can point to an absolute or relative
  path, in which case it is resolved via QLibraryInfo::SettingsPath
  and QStandardPaths::ConfigLocation.

[ChangeLog][QtGui][Windows]
Introduce experimental feature allowing the user to specify
a GPU driver buglist with some additional keywords to chooose
the GL renderer backend depending on GPU.

Task-number: QTBUG-43263
Change-Id: I8c20b0e8ee3cf575b91d0672bf405c42d3e9fb64
Reviewed-by: Laszlo Agocs <laszlo.agocs@theqtcompany.com>

1 files changed, 37 insertions, 0 deletions

diff --git a/tests/auto/gui/qopenglconfig/tst_qopenglconfig.cpp b/tests/auto/gui/qopenglconfig/tst_qopenglconfig.cpp
index 49838cc812..bfb2623508 100644
--- a/tests/auto/gui/qopenglconfig/tst_qopenglconfig.cpp
+++ b/tests/auto/gui/qopenglconfig/tst_qopenglconfig.cpp
@@ -37,6 +37,7 @@
 #include <private/qguiapplication_p.h>
 #include <qpa/qplatformintegration.h>
 #include <qpa/qplatformnativeinterface.h>
+#include <private/qopengl_p.h>
 
 #include <QtTest/QtTest>
 
@@ -105,6 +106,7 @@ class tst_QOpenGlConfig : public QObject
 private slots:
     void testConfiguration();
     void testGlConfiguration();
+    void testBugList();
 };
 
 static void dumpConfiguration(QTextStream &str)
@@ -217,6 +219,41 @@ void tst_QOpenGlConfig::testGlConfiguration()
     qDebug().noquote() << '\n' << result;
 }
 
+static inline QByteArray msgSetMismatch(const QSet<QString> &expected,
+                                        const QSet<QString> &actual)
+{
+    const QString result = QStringList(expected.toList()).join(QLatin1Char(','))
+        + QLatin1String(" != ")
+        + QStringList(actual.toList()).join(QLatin1Char(','));
+    return result.toLatin1();
+}
+
+void tst_QOpenGlConfig::testBugList()
+{
+    // Check bug list parsing for some arbitrary NVidia card
+    // faking Windows OS.
+    const QString fileName = QFINDTESTDATA("buglist.json");
+    QVERIFY(!fileName.isEmpty());
+
+     QSet<QString> expectedFeatures;
+     expectedFeatures << "feature1";
+
+    QOpenGLConfig::Gpu gpu;
+    gpu.vendorId = 0x10DE;
+    gpu.deviceId = 0x0DE9;
+
+#ifdef Q_COMPILER_INITIALIZER_LISTS
+    gpu.driverVersion = QVersionNumber({9, 18, 13, 4460});
+#else
+    gpu.driverVersion = QVersionNumber(QVector<int>() << 9 << 18 << 13 << 4460);
+#endif
+    const QSet<QString> actualFeatures =
+        QOpenGLConfig::gpuFeatures(gpu, QStringLiteral("win"),
+                                   QVersionNumber(6, 3), fileName);
+    QVERIFY2(expectedFeatures == actualFeatures,
+             msgSetMismatch(expectedFeatures, actualFeatures));
+}
+
 QTEST_MAIN(tst_QOpenGlConfig)
 
 #include "tst_qopenglconfig.moc"