download_back_buffer()

MAYAFLUX_API void MayaFlux::Buffers::download_back_buffer	(	const VKBufferResources::GenerationSlot &	slot,
		void *	data,
		size_t	size,
		std::shared_ptr< VKBuffer > &	staging
	)

Download a raw back_buffers slot to host memory.

Parameters

slot	Source slot, typically from VKBuffer::get_back_buffer().
size	Byte count to copy.
data	Destination pointer, at least size bytes.
staging	Persistent staging buffer for device-local slots. Ignored, and may be null, when slot.mapped_ptr is already valid.

Reads slot.mapped_ptr directly when present (host-visible slot, no transfer). Otherwise records a fenced copy into staging exactly as download_from_gpu_async does, using slot.buffer as the copy source.

Definition at line 364 of file StagingUtils.cpp.

{
    auto handle = download_back_buffer_async(slot, size, staging);
    resolve_back_buffer_read(handle, slot, data, size, staging);
}

References download_back_buffer_async(), resolve_back_buffer_read(), and size.

Referenced by MayaFlux::Buffers::BufferDownloadProcessor::download_back_buffers(), MayaFlux::Buffers::ClaimAccumulateProcessor::processing_function(), MayaFlux::Buffers::VolumeGridBuffer::read_field(), and MayaFlux::Buffers::RelaxationStepProcessor::serve_snapshot().

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