From ce91218b420cd9e57a3367679300f8ba4027d6c5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Konstantin=20K=C3=A4fer?= <mail@kkaefer.com>
Date: Wed, 12 Jun 2019 17:25:44 +0200
Subject: [core] don't call glFlush on every frame

---
 src/mbgl/gl/context.cpp | 6 ++++++
 src/mbgl/gl/context.hpp | 2 ++
 2 files changed, 8 insertions(+)

(limited to 'src/mbgl/gl')

diff --git a/src/mbgl/gl/context.cpp b/src/mbgl/gl/context.cpp
index 3e88624d4f..4d9c2055de 100644
--- a/src/mbgl/gl/context.cpp
+++ b/src/mbgl/gl/context.cpp
@@ -682,7 +682,13 @@ void Context::performCleanup() {
                                                abandonedRenderbuffers.data()));
         abandonedRenderbuffers.clear();
     }
+}
+
+void Context::reduceMemoryUsage() {
+    performCleanup();
 
+    // Ensure that all pending actions are executed to ensure that they happen before the app goes
+    // to the background.
     MBGL_CHECK_ERROR(glFinish());
 }
 
diff --git a/src/mbgl/gl/context.hpp b/src/mbgl/gl/context.hpp
index 80278718d1..70f12e5a8d 100644
--- a/src/mbgl/gl/context.hpp
+++ b/src/mbgl/gl/context.hpp
@@ -96,6 +96,8 @@ public:
     // Only call this while the OpenGL context is exclusive to this thread.
     void performCleanup() override;
 
+    void reduceMemoryUsage() override;
+
     // Drain pools and remove abandoned objects, in preparation for destroying the store.
     // Only call this while the OpenGL context is exclusive to this thread.
     void reset();
-- 
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