Metal setup merge (#1616)

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: Alex Cristici <alex.cristici@gmail.com>
Co-authored-by: mwilsnd <mwilsnd@gmail.com>
Co-authored-by: Stefan Karschti <stefan.karschti@gmail.com>
Co-authored-by: Bart Louwers <bart@emeel.net>
Co-authored-by: Alex Cristici <alex@skoon.energy>
Co-authored-by: Bart Louwers <bart.louwers@gmail.com>
Co-authored-by: Wei Chen <alanchenboy@gmail.com>
Co-authored-by: Siarhei Fedartsou <siarhei.fedartsou@gmail.com>
Co-authored-by: tdcosta100 <tdcosta100@gmail.com>

render-test/CMakeLists.txt

@@ -66,3 +66,7 @@ target_link_libraries(
 )
 
 set_property(TARGET mbgl-render-test PROPERTY FOLDER Core)
+
+if(MLN_WITH_OPENGL)
+    target_compile_definitions(mbgl-render-test PRIVATE "MLN_RENDER_BACKEND_OPENGL=1")
+endif()