Method submit_frame

framework/api_vulkan_sample.cpp:545–596

}

void ApiVulkanSample::submit_frame()
{
	if (get_render_context().has_swapchain())
	{
		const auto &queue = get_device().get_queue_by_present(0);

		VkSwapchainKHR sc = get_render_context().get_swapchain().get_handle();

		VkPresentInfoKHR present_info = {};
		present_info.sType            = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR;
		present_info.pNext            = NULL;
		present_info.swapchainCount   = 1;
		present_info.pSwapchains      = ≻
		present_info.pImageIndices    = &current_buffer;

		VkDisplayPresentInfoKHR disp_present_info{};
		if (get_device().get_gpu().is_extension_supported(VK_KHR_DISPLAY_SWAPCHAIN_EXTENSION_NAME) &&
		    window->get_display_present_info(&disp_present_info, width, height))
		{
			// Add display present info if supported and wanted
			present_info.pNext = &disp_present_info;
		}

		// Check if a wait semaphore has been specified to wait for before presenting the image
		if (semaphores.render_complete != VK_NULL_HANDLE)
		{
			present_info.pWaitSemaphores    = &semaphores.render_complete;
			present_info.waitSemaphoreCount = 1;
		}

		VkResult present_result = queue.present(present_info);

		if (!((present_result == VK_SUCCESS) || (present_result == VK_SUBOPTIMAL_KHR)))
		{
			if (present_result == VK_ERROR_OUT_OF_DATE_KHR)
			{
				// Swap chain is no longer compatible with the surface and needs to be recreated
				resize(width, height);
				return;
			}
			else
			{
				VK_CHECK(present_result);
			}
		}
	}

	// DO NOT USE
	// vkDeviceWaitIdle and vkQueueWaitIdle are extremely expensive functions, and are used here purely for demonstrating the vulkan API
	// without having to concern ourselves with proper syncronization. These functions should NEVER be used inside the render loop like this (every frame).
	VK_CHECK(get_device().get_queue_by_present(0).wait_idle());
}

ApiVulkanSample::~ApiVulkanSample()
{