[core] Implement support for "text-writing-mode" layout property

1 files changed, 9 insertions, 2 deletions

diff --git a/src/mbgl/renderer/buckets/symbol_bucket.hpp b/src/mbgl/renderer/buckets/symbol_bucket.hpp
index a94073f7d0..f47ced8331 100644
--- a/src/mbgl/renderer/buckets/symbol_bucket.hpp
+++ b/src/mbgl/renderer/buckets/symbol_bucket.hpp
@@ -39,6 +39,10 @@ public:
     size_t vertexStartIndex;
     // The crossTileID is only filled/used on the foreground for variable text anchors
     uint32_t crossTileID = 0u;
+    // The placedOrientation is only used when symbol layer's property is set to support
+    // placement for orientation variants.
+    optional<style::TextWritingModeType> placedOrientation;
+    float angle = 0;
 };
 
 class SymbolBucket final : public Bucket {
@@ -53,7 +57,9 @@ public:
                  bool sortFeaturesByY,
                  const std::string bucketLeaderID,
                  const std::vector<SymbolInstance>&&,
-                 const float tilePixelRatio);
+                 const float tilePixelRatio,
+                 bool allowVerticalPlacement,
+                 std::vector<style::TextWritingModeType> placementModes);
     ~SymbolBucket() override;
 
     void upload(gfx::UploadPass&) override;
@@ -149,7 +155,8 @@ public:
 
     const float tilePixelRatio;
     uint32_t bucketInstanceId;
-
+    const bool allowVerticalPlacement;
+    const std::vector<style::TextWritingModeType> placementModes;
     mutable optional<bool> hasFormatSectionOverrides_;
 
     std::shared_ptr<std::vector<size_t>> featureSortOrder;