Method RecreateAccelStructs

Rtxpt/Sample.cpp:1127–1160

}

void Sample::RecreateAccelStructs(nvrhi::ICommandList* commandList)
{
    // If the subInstanceData or BLAS build input data changes we trigger a full update here
    // could be made more efficient by only rebuilding the geometry in question,
    // or split the BLAS and subInstanceData updates
    if (m_ui.AccelerationStructRebuildRequested)
    {
        m_ui.AccelerationStructRebuildRequested = false;
        m_ui.ResetAccumulation = true;

        GetDevice()->waitForIdle();

        m_bindingSet = nullptr;
        m_topLevelAS = nullptr;

        for (const std::shared_ptr<MeshInfo>& _mesh : m_scene->GetSceneGraph()->GetMeshes())
        {
            assert(std::dynamic_pointer_cast<MeshInfoEx>(_mesh) != nullptr);
            const std::shared_ptr<MeshInfoEx>& mesh = std::static_pointer_cast<MeshInfoEx>(_mesh);
            mesh->accelStruct = nullptr;
            mesh->AccelStructOMM = nullptr;
            mesh->OpacityMicroMaps.clear();
            mesh->DebugData = nullptr;
            mesh->DebugDataDirty = true;
        }

        // raytracing acceleration structures
        commandList->open();
        CreateAccelStructs(commandList);
        commandList->close();
        GetDevice()->executeCommandList(commandList);
        GetDevice()->waitForIdle();
    }
}

void Sample::TransitionMeshBuffersToReadOnly(nvrhi::ICommandList* commandList)
{