[core] Pass placement commit parameters in constructor

src/mbgl/renderer/render_orchestrator.cpp

@@ -400,6 +400,7 @@ std::unique_ptr<RenderTree> RenderOrchestrator::createRenderTree(const UpdatePar
                                                                   updateParameters.mode,
                                                                   updateParameters.transitionOptions,
                                                                   updateParameters.crossSourceCollisions,
+                                                                  updateParameters.timePoint,
                                                                   placementController.getPlacement());
 
             for (auto it = layersNeedPlacement.crbegin(); it != layersNeedPlacement.crend(); ++it) {
@@ -408,7 +409,7 @@ std::unique_ptr<RenderTree> RenderOrchestrator::createRenderTree(const UpdatePar
                 placement->placeLayer(layer, renderTreeParameters->transformParams.projMatrix, updateParameters.debugOptions & MapDebugOptions::Collision);
             }
 
-            placement->commit(updateParameters.timePoint, updateParameters.transformState.getZoom());
+            placement->commit();
             crossTileSymbolIndex.pruneUnusedLayers(usedSymbolLayers);
             for (const auto& entry : renderSources) {
                 entry.second->updateFadingTiles();
@@ -427,7 +428,8 @@ std::unique_ptr<RenderTree> RenderOrchestrator::createRenderTree(const UpdatePar
             Mutable<Placement> placement = makeMutable<Placement>(updateParameters.transformState,
                                                                   updateParameters.mode,
                                                                   updateParameters.transitionOptions,
-                                                                  updateParameters.crossSourceCollisions);
+                                                                  updateParameters.crossSourceCollisions,
+                                                                  updateParameters.timePoint);
             for (auto it = layersNeedPlacement.crbegin(); it != layersNeedPlacement.crend(); ++it) {
                 const RenderLayer& layer = *it;
                 crossTileSymbolIndex.addLayer(layer, updateParameters.transformState.getLatLng().longitude());
@@ -435,7 +437,7 @@ std::unique_ptr<RenderTree> RenderOrchestrator::createRenderTree(const UpdatePar
                                       renderTreeParameters->transformParams.projMatrix,
                                       updateParameters.debugOptions & MapDebugOptions::Collision);
             }
-            placement->commit(updateParameters.timePoint, updateParameters.transformState.getZoom());
+            placement->commit();
             placementController.setPlacement(std::move(placement));
         }
         renderTreeParameters->symbolFadeChange = 1.0f;

src/mbgl/text/placement.cpp

@@ -61,7 +61,8 @@ const CollisionGroups::CollisionGroup& CollisionGroups::get(const std::string& s
 // PlacementController implemenation
 
 PlacementController::PlacementController()
-    : placement(makeMutable<Placement>(TransformState{}, MapMode::Static, style::TransitionOptions{}, true, nullopt)) {}
+    : placement(makeMutable<Placement>(
+          TransformState{}, MapMode::Static, style::TransitionOptions{}, true, TimePoint(), nullopt)) {}
 
 void PlacementController::setPlacement(Immutable<Placement> placement_) {
     placement = std::move(placement_);
@@ -94,10 +95,12 @@ Placement::Placement(const TransformState& state_,
                      MapMode mapMode_,
                      style::TransitionOptions transitionOptions_,
                      const bool crossSourceCollisions,
+                     TimePoint commitTime_,
                      optional<Immutable<Placement>> prevPlacement_)
     : collisionIndex(state_, mapMode_),
       mapMode(mapMode_),
       transitionOptions(std::move(transitionOptions_)),
+      commitTime(commitTime_),
       placementZoom(state_.getZoom()),
       collisionGroups(crossSourceCollisions),
       prevPlacement(std::move(prevPlacement_)) {
@@ -622,8 +625,7 @@ void Placement::placeBucket(const SymbolBucket& bucket,
                                 std::forward_as_tuple(bucket.bucketInstanceId, params.featureIndex, overscaledID));
 }
 
-void Placement::commit(TimePoint now, const double zoom) {
-    commitTime = now;
+void Placement::commit() {
     if (!getPrevPlacement()) {
         assert(mapMode != MapMode::Continuous);
         fadeStartTime = commitTime;
@@ -638,7 +640,7 @@ void Placement::commit(TimePoint now, const double zoom) {
 
     bool placementChanged = false;
 
-    prevZoomAdjustment = getPrevPlacement()->zoomAdjustment(zoom);
+    prevZoomAdjustment = getPrevPlacement()->zoomAdjustment(placementZoom);
     float increment = getPrevPlacement()->symbolFadeChange(commitTime);
 
     // add the opacities from the current placement, and copy their current values from the previous placement

src/mbgl/text/placement.hpp

@@ -116,9 +116,10 @@ public:
               MapMode,
               style::TransitionOptions,
               const bool crossSourceCollisions,
+              TimePoint commitTime,
               optional<Immutable<Placement>> prevPlacement = nullopt);
     void placeLayer(const RenderLayer&, const mat4&, bool showCollisionBoxes);
-    void commit(TimePoint, const double zoom);
+    void commit();
     void updateLayerBuckets(const RenderLayer&, const TransformState&, bool updateOpacities) const;
     float symbolFadeChange(TimePoint now) const;
     bool hasTransitions(TimePoint now) const;
@@ -151,7 +152,7 @@ private:
 
     TimePoint fadeStartTime;
     TimePoint commitTime;
-    float placementZoom;
+    const float placementZoom;
     float prevZoomAdjustment = 0;
 
     std::unordered_map<uint32_t, JointPlacement> placements;