[core] custom layer - add contextLost callback

- optional callback method that can be used to do cleanup when the context has been lost before re-initialisation
2017-09-19 10:29:51 +03:00
parent b0c06c764b
commit 97a010cc9b
5 changed files with 36 additions and 3 deletions
--- a/src/mbgl/renderer/layers/render_custom_layer.cpp
+++ b/src/mbgl/renderer/layers/render_custom_layer.cpp
@@ -16,8 +16,12 @@ RenderCustomLayer::RenderCustomLayer(Immutable<style::CustomLayer::Impl> _impl)

 RenderCustomLayer::~RenderCustomLayer() {
    assert(BackendScope::exists());
-    if (initialized && !contextDestroyed && impl().deinitializeFn) {
-        impl().deinitializeFn(impl().context);
+    if (initialized) {
+        if (contextDestroyed && impl().contextLostFn ) {
+            impl().contextLostFn(impl().context);
+        } else if (!contextDestroyed && impl().deinitializeFn) {
+            impl().deinitializeFn(impl().context);
+        }
    }
 }