Method update

3rdparty/bgfx/src/renderer_vk.cpp:5289–5313

	}

	void BufferVK::update(VkCommandBuffer _commandBuffer, uint32_t _offset, uint32_t _size, void* _data, bool _discard)
	{
		BGFX_PROFILER_SCOPE("BufferVK::update", kColorFrame);
		BX_UNUSED(_discard);

		StagingBufferVK stagingBuffer = s_renderVK->allocFromScratchStagingBuffer(_size, 8, _data);

		VkBufferCopy region;
		region.srcOffset = stagingBuffer.m_offset;
		region.dstOffset = _offset;
		region.size      = _size;
		vkCmdCopyBuffer(_commandBuffer, stagingBuffer.m_buffer, m_buffer, 1, &region);

		setMemoryBarrier(
			  _commandBuffer
			, VK_PIPELINE_STAGE_TRANSFER_BIT
			, VK_PIPELINE_STAGE_TRANSFER_BIT
			);

		if (!stagingBuffer.m_isFromScratch)
		{
			s_renderVK->release(stagingBuffer.m_buffer);
			s_renderVK->recycleMemory(stagingBuffer.m_deviceMem);
		}
	}

	void BufferVK::destroy()
	{