rhi: Expose device name, type, and IDs

...to the extent it is sensible. We have to make compromises still,
meaning some fields will only be applicable with certain APIs.

Most of this is already shown upon QRhi::create() as info debug
prints, when enabled. Now expose it all through the QRhi API as
well.

This is useful for printing in qtdiag, and, while it should be
avoided as much as possible, to make decisions about disabling
3D rendering features depending on the driver and GPU in use.

Change-Id: Iebe1e192965c928b82a094d1c7c50ddf4b38b9a2
Reviewed-by: Andy Nichols <andy.nichols@qt.io>

1 files changed, 25 insertions, 0 deletions

diff --git a/src/gui/rhi/qrhi_p.h b/src/gui/rhi/qrhi_p.h
index 14ea81abec..fc65587408 100644
--- a/src/gui/rhi/qrhi_p.h
+++ b/src/gui/rhi/qrhi_p.h
@@ -1443,6 +1443,29 @@ private:
     friend class QRhi;
 };
 
+struct Q_GUI_EXPORT QRhiDriverInfo
+{
+    enum DeviceType {
+        UnknownDevice,
+        IntegratedDevice,
+        DiscreteDevice,
+        ExternalDevice,
+        VirtualDevice,
+        CpuDevice
+    };
+
+    QByteArray deviceName;
+    quint64 deviceId = 0;
+    quint64 vendorId = 0;
+    DeviceType deviceType = UnknownDevice;
+};
+
+Q_DECLARE_TYPEINFO(QRhiDriverInfo, Q_RELOCATABLE_TYPE);
+
+#ifndef QT_NO_DEBUG_STREAM
+Q_GUI_EXPORT QDebug operator<<(QDebug, const QRhiDriverInfo &);
+#endif
+
 struct Q_GUI_EXPORT QRhiInitParams
 {
 };
@@ -1530,6 +1553,8 @@ public:
                         QRhiNativeHandles *importDevice = nullptr);
 
     Implementation backend() const;
+    const char *backendName() const;
+    QRhiDriverInfo driverInfo() const;
     QThread *thread() const;
 
     using CleanupCallback = std::function<void(QRhi *)>;