Use junction for shaders in build dir

Author: ns6089

cmake/packaging/windows.cmake

@@ -39,9 +39,15 @@ install(DIRECTORY "${SUNSHINE_SOURCE_ASSETS_DIR}/windows/misc/gamepad/"
 install(DIRECTORY "${SUNSHINE_SOURCE_ASSETS_DIR}/windows/assets/"
         DESTINATION "${SUNSHINE_ASSETS_DIR}"
         COMPONENT assets)
-# copy assets to build directory, for running without install
+
+# copy assets (excluding shaders) to build directory, for running without install
 file(COPY "${SUNSHINE_SOURCE_ASSETS_DIR}/windows/assets/"
-        DESTINATION "${CMAKE_BINARY_DIR}/assets")
+        DESTINATION "${CMAKE_BINARY_DIR}/assets"
+        PATTERN "shaders" EXCLUDE)
+# use junction for shaders directory
+file(TO_NATIVE_PATH "${SUNSHINE_SOURCE_ASSETS_DIR}/windows/assets/shaders" shaders_in_build_src_native)
+file(TO_NATIVE_PATH "${CMAKE_BINARY_DIR}/assets/shaders" shaders_in_build_dest_native)
+execute_process(COMMAND cmd.exe /c mklink /J "${shaders_in_build_dest_native}" "${shaders_in_build_src_native}")
 
 # set(CPACK_NSIS_MUI_HEADERIMAGE "") # TODO: image should be 150x57 bmp
 set(CPACK_PACKAGE_ICON "${CMAKE_SOURCE_DIR}\\\\sunshine.ico")