Method begin_sampling

framework/stats/vulkan_stats_provider.cpp:321–339

}

void VulkanStatsProvider::begin_sampling(vkb::core::CommandBufferC &cb)
{
	uint32_t active_frame_idx = render_context.get_active_frame_index();
	if (timestamp_pool)
	{
		// We use TimestampQueries when available to provide a more accurate delta_time.
		// This counters are from a single command buffer execution, but the passed
		// delta time is a frame-to-frame s/w measure. A timestamp query in the the cmd
		// buffer gives the actual elapsed time where the counters were measured.
		cb.reset_query_pool(*timestamp_pool, active_frame_idx * 2, 1);
		cb.write_timestamp(VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT, *timestamp_pool,
		                   active_frame_idx * 2);
	}

	if (query_pool)
	{
		cb.begin_query(*query_pool, active_frame_idx, static_cast<VkQueryControlFlags>(0));
	}
}

void VulkanStatsProvider::end_sampling(vkb::core::CommandBufferC &cb)
{