LinuxApp: attempting to initialize in OpenGL mode if Vulkan fails

2 files changed, 12 insertions, 3 deletions

diff --git a/Common/NativeApp/include/Linux/LinuxAppBase.h b/Common/NativeApp/include/Linux/LinuxAppBase.h
index 83065d1..e4c6a3e 100644
--- a/Common/NativeApp/include/Linux/LinuxAppBase.h
+++ b/Common/NativeApp/include/Linux/LinuxAppBase.h
@@ -54,7 +54,7 @@ public:
     virtual int HandleXEvent(XEvent* xev){}
 
 #if VULKAN_SUPPORTED
-    virtual void InitVulkan(xcb_connection_t* connection, uint32_t window) = 0;
+    virtual bool InitVulkan(xcb_connection_t* connection, uint32_t window) = 0;
     virtual void HandleXCBEvent(xcb_generic_event_t* event){}
 #endif
 };
diff --git a/Common/NativeApp/src/Linux/LinuxMain.cpp b/Common/NativeApp/src/Linux/LinuxMain.cpp
index 93a3235..fc26c8a 100644
--- a/Common/NativeApp/src/Linux/LinuxMain.cpp
+++ b/Common/NativeApp/src/Linux/LinuxMain.cpp
@@ -214,7 +214,8 @@ int xcb_main()
 

     std::string Title = TheApp->GetAppTitle();

     auto xcbInfo = InitXCBConnectionAndWindow(Title);

-    TheApp->InitVulkan(xcbInfo.connection, xcbInfo.window);

+    if(!TheApp->InitVulkan(xcbInfo.connection, xcbInfo.window))

+        return -1;

 

     xcb_flush(xcbInfo.connection);

 

@@ -509,7 +510,15 @@ int main (int argc, char ** argv)
 

     if (UseVulkan)

     {

-        return xcb_main();

+        auto ret = xcb_main();

+        if (ret >= 0)

+        {

+            return ret;

+        }

+        else

+        {

+            LOG_ERROR_MESSAGE("Failed to initialize the engine in Vulkan mode. Attempting to use OpenGL");

+        }

     }

 #endif