3 files changed, 12 insertions, 0 deletions
diff --git a/src/mbgl/renderer/layers/render_circle_layer.hpp b/src/mbgl/renderer/layers/render_circle_layer.hpp
index 53353fcdcb..678aeb102f 100644
--- a/src/mbgl/renderer/layers/render_circle_layer.hpp
+++ b/src/mbgl/renderer/layers/render_circle_layer.hpp
@@ -39,4 +39,8 @@ inline bool RenderLayer::is<RenderCircleLayer>() const {
     return type == style::LayerType::Circle;
 }
 
+inline const RenderCircleLayer* toRenderCircleLayer(const RenderLayer* layer) {
+    return static_cast<const RenderCircleLayer*>(layer);
+}
+
 } // namespace mbgl
diff --git a/src/mbgl/renderer/layers/render_heatmap_layer.hpp b/src/mbgl/renderer/layers/render_heatmap_layer.hpp
index 9aca8bdc93..c2d2dcaa3b 100644
--- a/src/mbgl/renderer/layers/render_heatmap_layer.hpp
+++ b/src/mbgl/renderer/layers/render_heatmap_layer.hpp
@@ -49,4 +49,8 @@ inline bool RenderLayer::is<RenderHeatmapLayer>() const {
     return type == style::LayerType::Heatmap;
 }
 
+inline const RenderHeatmapLayer* toRenderHeatmapLayer(const RenderLayer* layer) {
+    return static_cast<const RenderHeatmapLayer*>(layer);
+}
+
 } // namespace mbgl
diff --git a/src/mbgl/renderer/layers/render_symbol_layer.hpp b/src/mbgl/renderer/layers/render_symbol_layer.hpp
index bd43324712..7c52467e56 100644
--- a/src/mbgl/renderer/layers/render_symbol_layer.hpp
+++ b/src/mbgl/renderer/layers/render_symbol_layer.hpp
@@ -99,4 +99,8 @@ inline bool RenderLayer::is<RenderSymbolLayer>() const {
     return type == style::LayerType::Symbol;
 }
 
+inline const RenderSymbolLayer* toRenderSymbolLayer(const RenderLayer* layer) {
+    return static_cast<const RenderSymbolLayer*>(layer);
+}
+
 } // namespace mbgl