ensure_gpu_capacity()

MAYAFLUX_API void MayaFlux::Buffers::ensure_gpu_capacity	(	const std::shared_ptr< VKBuffer > &	target,
		const std::shared_ptr< VKBuffer > &	staging,
		size_t	required,
		float	growth_factor = k_buffer_growth_factor
	)

Grow a GPU buffer (and its paired staging buffer) to fit required bytes.

Parameters

target	Device-local or host-visible GPU buffer to resize.
staging	Paired staging buffer, or nullptr if the target is host-visible.
required	Bytes needed for the next upload.
growth_factor	Multiplier applied when a resize is triggered (default 1.5).

No-op when target already has sufficient capacity. When a resize is necessary both buffers are grown to required * growth_factor so subsequent small increments do not trigger further allocations. Existing GPU data is not preserved (preserve_data = false) because the caller is about to overwrite it.

Definition at line 254 of file StagingUtils.cpp.

{
    if (required <= target->get_size_bytes()) {
        return;
    }
 
    const auto new_size = static_cast<size_t>(static_cast<float>(required) * growth_factor);
 
    target->resize(new_size, false);
 
    if (staging) {
        staging->resize(new_size, false);
    }
}

Referenced by upload_resizing().

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