Wait for GPU Device idle during every measured frame

And because that makes things take MUCH longer, we'll also measure fewer frames

Author: TechnicJelle

CMakeLists.txt

@@ -2,7 +2,7 @@ cmake_minimum_required(VERSION 3.30)
 project(LLRI2_Experiments)
 
 # Macro for the amount of frames to measure for.
-add_compile_definitions(FRAME_NUMBERS=50000)
+add_compile_definitions(FRAME_NUMBERS=20000)
 
 # Libraries
 

SDL3_GPU/src/main.cpp

@@ -633,6 +633,8 @@ SDL_AppResult SDL_AppIterate(void* appstate) {
 		return SDL_APP_FAILURE;
 	}
 
+	SDL_WaitForGPUIdle(myAppState->device);
+
 	std::chrono::high_resolution_clock::time_point endTime = std::chrono::high_resolution_clock::now();
 	std::chrono::duration<Uint32, std::nano> frameTime = endTime - startTime;
 	myAppState->frameTimes[myAppState->frameNumber] = frameTime.count();

Vulkan_Helpers/src/vk_engine.cpp

@@ -954,6 +954,8 @@ SDL_AppResult VulkanEngine::Draw() {
 		return SDL_APP_FAILURE;
 	}
 
+	vkDeviceWaitIdle(device);
+
 	const std::chrono::high_resolution_clock::time_point endTime = std::chrono::high_resolution_clock::now();
 	const std::chrono::duration<Uint32, std::nano> frameTime = endTime - startTime;
 	frameTimes[frameNumber] = frameTime.count();