Precomputed Visibility Volume is so important for mobile.
I’ve noticed that the Precomputed Visibility Volume is missing when using UE5.3, even after re-baking or recalculating. I’m using a template project provided by UE, and while everything works normally in UE4.27, the Precomputed Visibility Volume is absent in UE5.3.2
This is UE4.27.2
This is UE5.3.2， there is nothing …
This is my setting
Anyone meet this? 
I download the souce code, and find the Precomputed cells has build when build the light info. But some how, it doesn’t apply to the sence. I will continue dig it. bUsedPrecomputedVisibility this value always be false. Because there is no code set it to true. I sure this is a bug.
I find the PrecomputedVisibilityData is not set to view
This is my fix on UE5.4, hope can help others.
if (ViewState)
{
SCOPE_CYCLE_COUNTER(STAT_DecompressPrecomputedOcclusion);
View.PrecomputedVisibilityData = ViewState->GetPrecomputedVisibilityData(View, &Scene);
}
else
{
View.PrecomputedVisibilityData = nullptr;
}
This is the code commit.
https://github.com/EpicGames/UnrealEngine/pull/11304
RHIGetRenderQueryResult(PastQuery, NumSamples, true);
Final，I found the GPU Occusioncull is too heavy for my device, can we make a global var to control this and keep Precomputed Visibility?
I add a config option r.Mobile.SupportGPUOcclusion to enable the GPU occlusion or not in UE5.3. Anyone like can use this pull request.
https://github.com/EpicGames/UnrealEngine/pull/11535/commits/9a776a6ea22c0d1dd0c4867fe6acb19cad3cdcb8
do i have to build the engine for this?
