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| author | Chris Loer <chris.loer@gmail.com> | 2018-02-13 14:33:07 -0800 |
|---|---|---|
| committer | Chris Loer <chris.loer@mapbox.com> | 2018-02-14 10:55:16 -0800 |
| commit | d4df044ffe2234e3d14d1d86727372cd8e4953d8 (patch) | |
| tree | a563444294e026ee4e2e55cabf6b6838a4cb2ce4 | |
| parent | a11b277bc19bdf142dcc85927f4e7d7acaeb3ff1 (diff) | |
| download | qtlocation-mapboxgl-d4df044ffe2234e3d14d1d86727372cd8e4953d8.tar.gz | |
[ios] Release cached tiles on entering background.
Retain current render tiles for fast restart.
Waiting for a memory warning doesn't work because we can't make GL release calls once we're in the background.
| -rw-r--r-- | platform/ios/src/MGLMapView.mm | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/platform/ios/src/MGLMapView.mm b/platform/ios/src/MGLMapView.mm index e6712ba5e6..6f2d5039be 100644 --- a/platform/ios/src/MGLMapView.mm +++ b/platform/ios/src/MGLMapView.mm @@ -1158,6 +1158,13 @@ public: - (void)sleepGL:(__unused NSNotification *)notification { MGLAssertIsMainThread(); + + // Ideally we would wait until we actually received a memory warning but the bulk of the memory + // we have to release is tied up in GL buffers that we can't touch once we're in the background. + // Compromise position: release everything but currently rendering tiles + // A possible improvement would be to store a copy of the GL buffers that we could use to rapidly + // restart, but that we could also discard in response to a memory warning. + _rendererFrontend->reduceMemoryUse(); if ( ! self.dormant) { |