static int32 GSVTStreamingAsyncThread = 1;
static FAutoConsoleVariableRef CVarSVTStreamingAsync(
	TEXT("r.SparseVolumeTexture.Streaming.AsyncThread"),
	GSVTStreamingAsyncThread,
	TEXT("Perform most of the SVT streaming on an asynchronous worker thread instead of the rendering thread."),
	ECVF_RenderThreadSafe
);

static int32 GSVTStreamingEmptyPhysicalTileTextures = 0;

file
namespace    UE
namespace    SVT
class        class IStreamingManager

	//~ Begin rendering thread functions.
	virtual void Request(UStreamableSparseVolumeTexture* SparseVolumeTexture, uint32 StreamingInstanceKey, float FrameRate, float FrameIndex, float MipLevel, EStreamingRequestFlags Flags) = 0;
	// Begins updating the streaming manager. If r.SparseVolumeTexture.Streaming.AsyncThread is 1 and bUseAsyncThread is true, most of the updating work is done in another thread.
	virtual void BeginAsyncUpdate(FRDGBuilder& GraphBuilder, bool bUseAsyncThread = true) = 0;
	// Waits for the job started in BeginAsyncUpdate() to complete, issues GPU work and does some cleanup.
	virtual void EndAsyncUpdate(FRDGBuilder& GraphBuilder) = 0;
	// Returns a FStreamingDebugInfo useful for debugging streaming performance. All data is allocated on the passed in GraphBuilder.
	virtual const FStreamingDebugInfo* GetStreamingDebugInfo(FRDGBuilder& GraphBuilder) const = 0;
	//~ End rendering thread functions.