[core] De-mutex GlyphAtlas and SpriteAtlas

 - Expose glyph and icon information to workers via message interface.
 - Glyph/SpriteAtlas track which tiles have outstanding requests
    and send messages to them when glyphs/icons become available.
 - Remove obsolete "updateSymbolDependentTiles" pathway
 - Symbol preparation for a tile now depends on all glyphs becoming
    available before it can start.
 - Start tracking individual icons needed for a tile, although we don't
    do anything with the information yet.
 - Introduce typedef for GlyphID

1 files changed, 3 insertions, 2 deletions

diff --git a/src/mbgl/style/layers/symbol_layer_impl.hpp b/src/mbgl/style/layers/symbol_layer_impl.hpp
index 0c4b74e833..db20989f01 100644
--- a/src/mbgl/style/layers/symbol_layer_impl.hpp
+++ b/src/mbgl/style/layers/symbol_layer_impl.hpp
@@ -1,13 +1,14 @@
 #pragma once
 
+#include <mbgl/text/glyph.hpp>
 #include <mbgl/util/variant.hpp>
+#include <mbgl/sprite/sprite_atlas.hpp>
 #include <mbgl/style/layer_impl.hpp>
 #include <mbgl/style/layers/symbol_layer.hpp>
 #include <mbgl/style/layers/symbol_layer_properties.hpp>
 
 namespace mbgl {
 
-class SpriteAtlas;
 class SymbolLayout;
 
 namespace style {
@@ -67,7 +68,7 @@ public:
 
     std::unique_ptr<Bucket> createBucket(const BucketParameters&, const std::vector<const Layer*>&) const override;
     std::unique_ptr<SymbolLayout> createLayout(const BucketParameters&, const std::vector<const Layer*>&,
-                                               const GeometryTileLayer&) const;
+                                               const GeometryTileLayer&, GlyphDependencies&, IconDependencyMap&) const;
 
     IconPaintProperties::Evaluated iconPaintProperties() const;
     TextPaintProperties::Evaluated textPaintProperties() const;