Merge branch 'topic/metal-sep21' into main (#1695)

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: Tim Sylvester <tim@wetdogweather.com>
Co-authored-by: Bart Louwers <bart@emeel.net>
Co-authored-by: Alex Cristici <alex.cristici@gmail.com>
Co-authored-by: Stefan Karschti <stefan.karschti@gmail.com>
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>

src/mbgl/renderer/renderer_impl.cpp

@@ -152,11 +152,8 @@ void Renderer::Impl::render(const RenderTree& renderTree,
 #endif
 
         // Tweakers are run in the upload pass so they can set up uniforms.
-        orchestrator.visitLayerGroups([&](LayerGroupBase& layerGroup) {
-            if (layerGroup.getLayerTweaker()) {
-                layerGroup.getLayerTweaker()->execute(layerGroup, renderTree, parameters);
-            }
-        });
+        orchestrator.visitLayerGroups(
+            [&](LayerGroupBase& layerGroup) { layerGroup.runTweakers(renderTree, parameters); });
     }
 
     // Update the debug layer groups