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[core] Initiate new placement only when a new bucket appeares

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This commit is contained in:
Mikhail Pozdnyakov
2019-09-10 16:25:14 +03:00
parent 796cc3a4d6
commit fc741cdd21
3 changed files with 23 additions and 14 deletions
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9
src/mbgl/renderer/render_orchestrator.cpp
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@@ -360,11 +360,14 @@ std::unique_ptr<RenderTree> RenderOrchestrator::createRenderTree(const UpdatePar
crossTileSymbolIndex.reset();
}
bool symbolBucketsAdded = false;
bool symbolBucketsChanged = false;
for (auto it = layersNeedPlacement.rbegin(); it != layersNeedPlacement.rend(); ++it) {
if (crossTileSymbolIndex.addLayer(*it, updateParameters.transformState.getLatLng().longitude())) symbolBucketsChanged = true;
auto result = crossTileSymbolIndex.addLayer(*it, updateParameters.transformState.getLatLng().longitude());
symbolBucketsAdded = symbolBucketsAdded || (result & CrossTileSymbolIndex::AddLayerResult::BucketsAdded);
symbolBucketsChanged = symbolBucketsChanged || (result != CrossTileSymbolIndex::AddLayerResult::NoChanges);
}
renderTreeParameters->placementChanged = !placement->stillRecent(updateParameters.timePoint, updateParameters.transformState.getZoom()) || symbolBucketsChanged;
renderTreeParameters->placementChanged = !placement->stillRecent(updateParameters.timePoint, updateParameters.transformState.getZoom()) || symbolBucketsAdded;
std::set<std::string> usedSymbolLayers;
if (renderTreeParameters->placementChanged) {
@@ -389,7 +392,7 @@ std::unique_ptr<RenderTree> RenderOrchestrator::createRenderTree(const UpdatePar
}
for (auto it = layersNeedPlacement.rbegin(); it != layersNeedPlacement.rend(); ++it) {
placement->updateLayerBuckets(*it, updateParameters.transformState, renderTreeParameters->placementChanged);
placement->updateLayerBuckets(*it, updateParameters.transformState, renderTreeParameters->placementChanged || symbolBucketsChanged);
}
renderTreeParameters->symbolFadeChange = placement->symbolFadeChange(updateParameters.timePoint);