[core] PlacedSymbolData contains layer id

include/mbgl/renderer/renderer.hpp

@@ -36,6 +36,8 @@ struct PlacedSymbolData {
     bool intersectsTileBorder;
     // Viewport padding ({viewportPadding, viewportPadding} is a coordinate of the tile's top-left corner)
     float viewportPadding;
+    // Layer id (leader of the symbol layout group)
+    std::string layer;
 };
 
 class Renderer {

render-test/runner.cpp

@@ -814,8 +814,8 @@ void TestRunner::run(TestMetadata& metadata) {
                         ss << std::endl
                            << ++metadata.duplicationsCount << ". \"" << cv.to_bytes(placedSymbol.key) << "\" "
                            << (isIcon ? "icon" : "text") << " ((" << box.min.x << ", " << box.min.y << "), ("
-                           << box.max.x << ", " << box.max.y << ")) "
-                           << "at " << util::toString(tileId);
+                           << box.max.x << ", " << box.max.y << ")) from layer: " << placedSymbol.layer << " at "
+                           << util::toString(tileId);
                         duplicationsReport += ss.str();
                         return;
                     }
@@ -824,7 +824,7 @@ void TestRunner::run(TestMetadata& metadata) {
                         ss << std::endl
                            << ++metadata.labelCutOffFound << ". \"" << cv.to_bytes(placedSymbol.key) << "\" "
                            << (isIcon ? "icon" : "text") << " ((" << box.min.x << ", " << box.min.y << "), ("
-                           << box.max.x << ", " << box.max.y << "))"
+                           << box.max.x << ", " << box.max.y << ")) from layer: " << placedSymbol.layer
                            << (placed ? " is placed at " : " is not placed at ") << util::toString(tileId) << " and"
                            << (it->placed ? " placed at " : " not placed at ") << util::toString(it->tileId);
                         cutOffLabelsReport += ss.str();

src/mbgl/text/placement.cpp

@@ -608,7 +608,7 @@ void Placement::placeSymbol(const SymbolInstance& symbolInstance,
         JointPlacement(
             placeText || ctx.alwaysShowText, placeIcon || ctx.alwaysShowIcon, offscreen || bucket.justReloaded));
     assert(pair.second);
-    newSymbolPlaced(symbolInstance, pair.first->second, ctx.placementType, textBoxes, iconBoxes);
+    newSymbolPlaced(symbolInstance, ctx, pair.first->second, ctx.placementType, textBoxes, iconBoxes);
     seenCrossTileIDs.insert(symbolInstance.crossTileID);
 }
 
@@ -1268,6 +1268,7 @@ private:
                                   const mat4& posMatrix,
                                   float textPixelRatio) override;
     void newSymbolPlaced(const SymbolInstance&,
+                         const PlacementContext&,
                          const JointPlacement&,
                          style::SymbolPlacementType,
                          const std::vector<ProjectedCollisionBox>&,
@@ -1476,6 +1477,7 @@ bool TilePlacement::canPlaceAtVariableAnchor(const CollisionBox& box,
 }
 
 void TilePlacement::newSymbolPlaced(const SymbolInstance& symbol,
+                                    const PlacementContext& ctx,
                                     const JointPlacement& placement,
                                     style::SymbolPlacementType placementType,
                                     const std::vector<ProjectedCollisionBox>& textCollisionBoxes,
@@ -1502,7 +1504,8 @@ void TilePlacement::newSymbolPlaced(const SymbolInstance& symbol,
                                 placement.text,
                                 placement.icon,
                                 !placement.skipFade && populateIntersections,
-                                collisionIndex.getViewportPadding()};
+                                collisionIndex.getViewportPadding(),
+                                ctx.getBucket().bucketLeaderID};
     placedSymbolsData.emplace_back(std::move(symbolData));
 }
 

src/mbgl/text/placement.hpp

@@ -148,6 +148,7 @@ protected:
     void placeLayer(const RenderLayer&, std::set<uint32_t>&);
     virtual void commit();
     virtual void newSymbolPlaced(const SymbolInstance&,
+                                 const PlacementContext&,
                                  const JointPlacement&,
                                  style::SymbolPlacementType,
                                  const std::vector<ProjectedCollisionBox>& /*textBoxes*/,

test/map/map.test.cpp

@@ -1431,7 +1431,18 @@ TEST(Map, PlacedSymbolData) {
 
     int placedTotal = 0;
 
+    const std::set<std::string> symbolLayers{"place-city-lg-s",
+                                             "place-neighbourhood",
+                                             "place-suburb",
+                                             "poi-scalerank2",
+                                             "poi-scalerank3",
+                                             "poi-parks-scalerank1",
+                                             "poi-parks-scalerank2",
+                                             "poi-parks-scalerank3",
+                                             "rail-label"};
+
     for (const auto& placedSymbol : placedSymbols) {
+        EXPECT_NE(0u, symbolLayers.count(placedSymbol.layer));
         if (placedSymbol.textPlaced && placedSymbol.textCollisionBox) {
             if (isInsideTile(*placedSymbol.textCollisionBox, placedSymbol.viewportPadding, viewportSize)) {
                 EXPECT_FALSE(placedSymbol.intersectsTileBorder);