From 591af0021bfb8b9fdfd803b55fb6c18a24c46943 Mon Sep 17 00:00:00 2001
From: John Firebaugh <john.firebaugh@gmail.com>
Date: Tue, 30 May 2017 13:40:36 -0700
Subject: [core] Refactor RenderSource updates

* Eliminate updateBatch in favor of diffing layers and detecting changes to properties upon which layout depends.
* Replace RenderSource::{update,remove,invalidate,reload}Tiles with a single update method
* Replace TilePyramid::{update,remove,invalidate,reload}Tiles with a single update method
* Remove Style& dependency TODO from GeometryTile and TileParameters
---
 src/mbgl/style/layers/symbol_layer_impl.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'src/mbgl/style/layers/symbol_layer_impl.cpp')

diff --git a/src/mbgl/style/layers/symbol_layer_impl.cpp b/src/mbgl/style/layers/symbol_layer_impl.cpp
index 3f0ab9b8fb..b59768725d 100644
--- a/src/mbgl/style/layers/symbol_layer_impl.cpp
+++ b/src/mbgl/style/layers/symbol_layer_impl.cpp
@@ -3,5 +3,14 @@
 namespace mbgl {
 namespace style {
 
+bool SymbolLayer::Impl::hasLayoutDifference(const Layer::Impl& other) const {
+    assert(dynamic_cast<const SymbolLayer::Impl*>(&other));
+    const auto& impl = static_cast<const style::SymbolLayer::Impl&>(other);
+    return filter     != impl.filter ||
+           visibility != impl.visibility ||
+           layout     != impl.layout ||
+           paint.hasDataDrivenPropertyDifference(impl.paint);
+}
+
 } // namespace style
 } // namespace mbgl
-- 
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