XR: Print OpenXR SDK version in --debug-xr mode

Helps with version validation when updating the OpenXR dependency.

intern/ghost/intern/GHOST_XrContext.cpp

@@ -86,6 +86,7 @@ void GHOST_XrContext::initialize(const GHOST_XrContextCreateInfo *create_info)
   initApiLayers();
   initExtensions();
   if (isDebugMode()) {
+    printSDKVersion();
     printAvailableAPILayersAndExtensionsInfo();
   }
 
@@ -156,6 +157,16 @@ void GHOST_XrContext::storeInstanceProperties()
 /** \name Debug Printing
  * \{ */
 
+void GHOST_XrContext::printSDKVersion()
+{
+  const XrVersion sdk_version = XR_CURRENT_API_VERSION;
+
+  printf("OpenXR SDK Version: %u.%u.%u\n",
+         XR_VERSION_MAJOR(sdk_version),
+         XR_VERSION_MINOR(sdk_version),
+         XR_VERSION_PATCH(sdk_version));
+}
+
 void GHOST_XrContext::printInstanceInfo()
 {
   assert(m_oxr->instance != XR_NULL_HANDLE);

intern/ghost/intern/GHOST_XrContext.h

@@ -126,6 +126,7 @@ class GHOST_XrContext : public GHOST_IXrContext {
   void storeInstanceProperties();
   void initDebugMessenger();
 
+  void printSDKVersion();
   void printInstanceInfo();
   void printAvailableAPILayersAndExtensionsInfo();
   void printExtensionsAndAPILayersToEnable();