Merge remote-tracking branch 'origin/tqtc/lts-5.15.9' into tqtc/lts-5.15-opensourcev5.15.9-lts-lgpl

Change-Id: Iaff6b55275e50d19973e1020853d8622587069f9

1 files changed, 7 insertions, 0 deletions

diff --git a/src/gui/vulkan/qvulkaninstance.cpp b/src/gui/vulkan/qvulkaninstance.cpp
index 555dee3a9c..19a88074af 100644
--- a/src/gui/vulkan/qvulkaninstance.cpp
+++ b/src/gui/vulkan/qvulkaninstance.cpp
@@ -531,6 +531,13 @@ void QVulkanInstance::setExtensions(const QByteArrayList &extensions)
 
     \note This function can only be called before create() and has no effect if
     called afterwards.
+
+    \note Be aware that Vulkan 1.1 changes the behavior with regards to the
+    Vulkan API version field. In Vulkan 1.0 specifying an unsupported \a
+    vulkanVersion led to failing create() with \c VK_ERROR_INCOMPATIBLE_DRIVER,
+    as was mandated by the specification. Starting with Vulkan 1.1, the
+    specification disallows this, the driver must accept any version without
+    failing the instance creation.
  */
 void QVulkanInstance::setApiVersion(const QVersionNumber &vulkanVersion)
 {