[core][tile|static mode] Introduce MapOptions::keepRenderData() flag

Render orchestrator stores the render data between render frames if this flag is set.

3 files changed, 15 insertions, 2 deletions

diff --git a/src/mbgl/map/map_impl.cpp b/src/mbgl/map/map_impl.cpp
index 0edc715134..60d4d6021c 100644
--- a/src/mbgl/map/map_impl.cpp
+++ b/src/mbgl/map/map_impl.cpp
@@ -17,6 +17,7 @@ Map::Impl::Impl(RendererFrontend& frontend_,
       mode(mapOptions.mapMode()),
       pixelRatio(mapOptions.pixelRatio()),
       crossSourceCollisions(mapOptions.crossSourceCollisions()),
+      keepRenderData(mapOptions.keepRenderData()),
       fileSource(std::move(fileSource_)),
       style(std::make_unique<style::Style>(fileSource, pixelRatio)),
       annotationManager(*style) {
@@ -64,8 +65,9 @@ void Map::Impl::onUpdate() {
                                annotationManager.makeWeakPtr(),
                                fileSource,
                                prefetchZoomDelta,
-                               bool(stillImageRequest),
-                               crossSourceCollisions};
+                               stillImageRequest.get(),
+                               crossSourceCollisions,
+                               keepRenderData};
 
     rendererFrontend.update(std::make_shared<UpdateParameters>(std::move(params)));
 }
diff --git a/src/mbgl/map/map_impl.hpp b/src/mbgl/map/map_impl.hpp
index 416662f9e5..56b18e4b2d 100644
--- a/src/mbgl/map/map_impl.hpp
+++ b/src/mbgl/map/map_impl.hpp
@@ -59,6 +59,7 @@ public:
     const MapMode mode;
     const float pixelRatio;
     const bool crossSourceCollisions;
+    const bool keepRenderData;
 
     MapDebugOptions debugOptions { MapDebugOptions::NoDebug };
 
diff --git a/src/mbgl/map/map_options.cpp b/src/mbgl/map/map_options.cpp
index 4cebb6adab..1e93125fd7 100644
--- a/src/mbgl/map/map_options.cpp
+++ b/src/mbgl/map/map_options.cpp
@@ -9,6 +9,7 @@ public:
     ViewportMode viewportMode = ViewportMode::Default;
     NorthOrientation orientation = NorthOrientation::Upwards;
     bool crossSourceCollisions = true;
+    bool keepRenderData = true;
     Size size = { 64, 64 };
     float pixelRatio = 1.0;
 };
@@ -54,6 +55,15 @@ bool MapOptions::crossSourceCollisions() const {
     return impl_->crossSourceCollisions;
 }
 
+MapOptions& MapOptions::withKeepRenderData(bool keepRenderData_) {
+    impl_->keepRenderData = keepRenderData_;
+    return *this;
+}
+
+bool MapOptions::keepRenderData() const {
+    return impl_->keepRenderData;
+}
+
 MapOptions& MapOptions::withNorthOrientation(NorthOrientation orientation) {
     impl_->orientation = orientation;
     return *this;