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Use child tile bounding volumes to cull parent tiles #506

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kring opened this issue May 31, 2022 · 1 comment
Closed

Use child tile bounding volumes to cull parent tiles #506

kring opened this issue May 31, 2022 · 1 comment
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performance Improvements to performance, including reductions in memory usage

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@kring
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kring commented May 31, 2022

Instead of culling terrain/buildings/etc with the tile's OBB, use the union of the children's OBBs. It will be more precise but will have more operations. Perhaps use spatial coherence to minimize the number of checks.

As originally mentioned here CesiumGS/cesium#2861 and implemented in CesiumJS here CesiumGS/cesium#4978.
@kring kring added the performance Improvements to performance, including reductions in memory usage label May 31, 2022
@kring kring mentioned this issue May 31, 2022
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@nithinp7
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nithinp7 commented Jul 6, 2022

Culling with children BVs where possible was implemented for both frustum and occlusion culling in #492.
@nithinp7 nithinp7 closed this as completed Jul 6, 2022
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Labels
performance Improvements to performance, including reductions in memory usage
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