Add DX12RenderDriver class stub

engine/CMakeLists.txt

@@ -3,6 +3,7 @@
 
 include(FetchContent)
 
+set(NOVA_DX12 ON CACHE BOOL "Enable DirectX 12 support")
 set(NOVA_VULKAN ON CACHE BOOL "Enable Vulkan support")
 set(NOVA_WAYLAND ON CACHE BOOL "Enable Wayland support")
 set(NOVA_X11 ON CACHE BOOL "Enable X11 support")
@@ -26,8 +27,15 @@ else ()
 		${ENGINE_SRC}
 		drivers/linux/system_driver.cpp
 	)
+	set(NOVA_DX12 OFF)
 endif ()
 
+if (NOVA_DX12)
+	set(ENGINE_SRC
+		${ENGINE_SRC}
+		drivers/dx12/render_driver.cpp
+	)
+endif ()
 if (NOVA_VULKAN)
 	find_package(Vulkan REQUIRED)
 	set(ENGINE_SRC
@@ -83,6 +91,7 @@ set(ENGINE_LIBS_PUBLIC
 	spdlog::spdlog
 )
 set(ENGINE_DEFS
+	$<$<BOOL:${NOVA_DX12}>:NOVA_DX12>
 	$<$<BOOL:${NOVA_VULKAN}>:NOVA_VULKAN>
 	$<$<BOOL:${NOVA_WAYLAND}>:NOVA_WAYLAND>
 	$<$<BOOL:${NOVA_X11}>:NOVA_X11>