增加Window/XCBWindow定义，以及增加instance/device扩展定义支持

example/Vulkan/CMakeLists.txt

@@ -1,7 +1,19 @@
-add_executable(VulkanTest   main.cpp
+IF(UNIX)
+    SET(RENDER_WINDOW_SOURCE  XCBWindow.cpp)
+    SET(RENDER_WINDOW_LIBRARY   xcb)
+ENDIF()
+if(WIN32)
+    SET(RENDER_WINDOW_SOURCE  Win32Window.cpp)
+ENDIF()
+if(APPLE)
+ENDIF()
+
+
+add_executable(VulkanTest   main.cpp
+                            ${RENDER_WINDOW_SOURCE}
                             VKInstance.cpp
                             VKPhysicalDevice.cpp
                             VKDevice.cpp
                             VKCommandBuffer.cpp)
 
-target_link_libraries(VulkanTest PRIVATE ${ULRE} ${VULKAN_LIB})
+target_link_libraries(VulkanTest PRIVATE ${ULRE} ${VULKAN_LIB} ${RENDER_WINDOW_LIBRARY})