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, 26 insertions, 0 deletions

diff --git a/src/gui/opengl/qopengl_p.h b/src/gui/opengl/qopengl_p.h
index a82195757d..377440455a 100644
--- a/src/gui/opengl/qopengl_p.h
+++ b/src/gui/opengl/qopengl_p.h
@@ -48,9 +48,13 @@
 #include <qopengl.h>
 #include <private/qopenglcontext_p.h>
 #include <QtCore/qset.h>
+#include <QtCore/qstring.h>
+#include <private/qversionnumber_p.h>
 
 QT_BEGIN_NAMESPACE
 
+class QJsonDocument;
+
 class Q_GUI_EXPORT QOpenGLExtensionMatcher
 {
 public:
@@ -67,6 +71,28 @@ private:
     QSet<QByteArray> m_extensions;
 };
 
+class Q_GUI_EXPORT QOpenGLConfig
+{
+public:
+    struct Gpu {
+        Gpu() : vendorId(0), deviceId(0) {}
+        bool isValid() const { return deviceId; }
+
+        uint vendorId;
+        uint deviceId;
+        QVersionNumber driverVersion;
+    };
+
+    static QSet<QString> gpuFeatures(const Gpu &gpu,
+                                     const QString &osName, const QVersionNumber &kernelVersion,
+                                     const QJsonDocument &doc);
+    static QSet<QString> gpuFeatures(const Gpu &gpu,
+                                     const QString &osName, const QVersionNumber &kernelVersion,
+                                     const QString &fileName);
+    static QSet<QString> gpuFeatures(const Gpu &gpu, const QJsonDocument &doc);
+    static QSet<QString> gpuFeatures(const Gpu &gpu, const QString &fileName);
+};
+
 QT_END_NAMESPACE
 
 #endif // QOPENGL_H