Method prepare

samples/performance/pipeline_cache/pipeline_cache.cpp:79–149

}

bool PipelineCache::prepare(const vkb::ApplicationOptions &options)
{
	if (!VulkanSample::prepare(options))
	{
		return false;
	}

	/* Try to read pipeline cache file if exists */
	std::vector<uint8_t> pipeline_data;

	try
	{
		pipeline_data = vkb::fs::read_temp("pipeline_cache.data");
	}
	catch (std::runtime_error &ex)
	{
		LOGW("No pipeline cache found. {}", ex.what());
	}

	/* Add initial pipeline cache data from the cached file */
	VkPipelineCacheCreateInfo create_info{VK_STRUCTURE_TYPE_PIPELINE_CACHE_CREATE_INFO};
	create_info.initialDataSize = pipeline_data.size();
	create_info.pInitialData    = pipeline_data.data();

	/* Create Vulkan pipeline cache */
	VK_CHECK(vkCreatePipelineCache(get_device().get_handle(), &create_info, nullptr, &pipeline_cache));

	vkb::ResourceCache &resource_cache = get_device().get_resource_cache();

	// Use pipeline cache to store pipelines
	resource_cache.set_pipeline_cache(pipeline_cache);

	std::vector<uint8_t> data_cache;

	try
	{
		data_cache = vkb::fs::read_temp("cache.data");
	}
	catch (std::runtime_error &ex)
	{
		LOGW("No data cache found. {}", ex.what());
	}

	// Build all pipelines from a previous run
	resource_cache.warmup(data_cache);

	get_stats().request_stats({vkb::StatIndex::frame_times});

	float dpi_factor = window->get_dpi_factor();

	button_size.x = button_size.x * dpi_factor;
	button_size.y = button_size.y * dpi_factor;

	create_gui(*window, &get_stats());

	load_scene("scenes/sponza/Sponza01.gltf");

	auto &camera_node = vkb::add_free_camera(get_scene(), "main_camera", get_render_context().get_surface_extent());