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| author | Chris Loer <chris.loer@gmail.com> | 2018-02-13 14:33:07 -0800 |
|---|---|---|
| committer | Chris Loer <chris.loer@gmail.com> | 2018-02-13 14:33:07 -0800 |
| commit | 52957fd8c47c4016231839631b4b8a76a76b73f9 (patch) | |
| tree | a9a83578def33c92439bcf63db849bdbc5312708 | |
| parent | b4fb4f6cc4e5edeaa6538250f3b81f92f53bf529 (diff) | |
| download | qtlocation-mapboxgl-upstream/release-more-memory.tar.gz | |
[ios,macos] Release cached tiles on entering background.upstream/release-more-memory
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 31eac056e5..66967c3696 100644 --- a/platform/ios/src/MGLMapView.mm +++ b/platform/ios/src/MGLMapView.mm @@ -1148,6 +1148,13 @@ 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->onLowMemory(); if ( ! self.dormant) { |