[core] Refactor CustomLayer internals

Move the responsibility for initialization/deinitialization/rendering to RenderCustomLayer. This eliminates special case code from Map and Style.

1 files changed, 5 insertions, 1 deletions

diff --git a/src/mbgl/renderer/layers/render_custom_layer.hpp b/src/mbgl/renderer/layers/render_custom_layer.hpp
index 2f7c2d3239..dd52d315cf 100644
--- a/src/mbgl/renderer/layers/render_custom_layer.hpp
+++ b/src/mbgl/renderer/layers/render_custom_layer.hpp
@@ -8,15 +8,19 @@ namespace mbgl {
 class RenderCustomLayer: public RenderLayer {
 public:
     RenderCustomLayer(Immutable<style::CustomLayer::Impl>);
-    ~RenderCustomLayer() final = default;
+    ~RenderCustomLayer() final;
 
     void transition(const TransitionParameters&) final {}
     void evaluate(const PropertyEvaluationParameters&) override;
     bool hasTransition() const override;
 
     std::unique_ptr<Bucket> createBucket(const BucketParameters&, const std::vector<const RenderLayer*>&) const final;
+    void render(Painter&, PaintParameters&, RenderSource*) final;
 
     const style::CustomLayer::Impl& impl() const;
+
+private:
+    bool initialized = false;
 };
 
 template <>