From 4a5dc37245d23805d13865f5ef9c5f26e539a9ca Mon Sep 17 00:00:00 2001
From: Molly Lloyd <molly@mapbox.com>
Date: Thu, 14 Jun 2018 14:35:39 -0700
Subject: [core] Implement CrossFadedDataDrivenProperty to add support for
 feature expressions in `*-pattern` properties

---
 src/mbgl/renderer/render_layer.hpp | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'src/mbgl/renderer/render_layer.hpp')

diff --git a/src/mbgl/renderer/render_layer.hpp b/src/mbgl/renderer/render_layer.hpp
index 3e2f1d7525..9f327c63e5 100644
--- a/src/mbgl/renderer/render_layer.hpp
+++ b/src/mbgl/renderer/render_layer.hpp
@@ -40,6 +40,9 @@ public:
     // Returns true if any paint properties have active transitions.
     virtual bool hasTransition() const = 0;
 
+    // Returns true if the layer has a pattern property and is actively crossfading.
+    virtual bool hasCrossfade() const = 0;
+
     // Check whether this layer is of the given subtype.
     template <class T>
     bool is() const;
-- 
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