vkCreateSwapchainKHR: internal drawable creation failed - c++

Question

I had my Vulkan application working but for some reason it stopped working(I don't believe I touched anything that could have broken it, besides making my engine project a .lib instead of a .dll) and started giving the "vkCreateSwapchainKHR: internal drawable creation failed" error in the validation layers. vkCreateSwapchainKHR returns VK_ERROR_VALIDATION_FAILED_EXT.
I already checked this answer:
Wat does the "vkCreateSwapchainKHR:internal drawable creation failed." means, but it was not my problem, (as I said, it was working until it wasn't). Here's all the code I believe is relevant, if you need something else just comment:
Window Creation:
/* Initialize the library */
if (!glfwInit())
/* Create a windowed mode window and its OpenGL context */
glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
glfwWindowHint(GLFW_DECORATED, _WCI.IsDecorated);
GLFWWindow = glfwCreateWindow(Extent.Width, Extent.Height, _WCI.Name.c_str(), nullptr, nullptr);
if (!GLFWWindow) glfwTerminate();
//glfwMakeContextCurrent(GLFWWindow);
uint32 Count = 0;
auto ff = glfwGetRequiredInstanceExtensions(&Count);
GS_BASIC_LOG_MESSAGE("GLFW required extensions:")
for (uint8 i = 0; i < Count; ++i)
{
GS_BASIC_LOG_MESSAGE("%d: %s", i, ff[i]);
}
WindowObject = glfwGetWin32Window(GLFWWindow);
WindowInstance = GetModuleHandle(nullptr);
I'm using the correct instance extensions:
const char* Extensions[] = { VK_KHR_SURFACE_EXTENSION_NAME, VK_KHR_WIN32_SURFACE_EXTENSION_NAME, VK_EXT_DEBUG_UTILS_EXTENSION_NAME };
VKSwapchainCreator VulkanRenderContext::CreateSwapchain(VKDevice* _Device, VkSwapchainKHR _OldSwapchain) const
{
VkSwapchainCreateInfoKHR SwapchainCreateInfo = { VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR };
SwapchainCreateInfo.surface = Surface.GetHandle();
SwapchainCreateInfo.minImageCount = 3;
SwapchainCreateInfo.imageFormat = Format.format;
SwapchainCreateInfo.imageColorSpace = Format.colorSpace;
SwapchainCreateInfo.imageExtent = Extent2DToVkExtent2D(RenderExtent);
//The imageArrayLayers specifies the amount of layers each image consists of. This is always 1 unless you are developing a stereoscopic 3D application.
SwapchainCreateInfo.imageArrayLayers = 1;
SwapchainCreateInfo.imageUsage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
SwapchainCreateInfo.imageSharingMode = VK_SHARING_MODE_EXCLUSIVE;
SwapchainCreateInfo.queueFamilyIndexCount = 0;
SwapchainCreateInfo.pQueueFamilyIndices = nullptr;
SwapchainCreateInfo.preTransform = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
SwapchainCreateInfo.compositeAlpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
SwapchainCreateInfo.presentMode = PresentMode;
SwapchainCreateInfo.clipped = VK_TRUE;
SwapchainCreateInfo.oldSwapchain = _OldSwapchain;
return VKSwapchainCreator(_Device, &SwapchainCreateInfo);
}
Both VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR and VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR are supported by my GPU.
VkBool32 Supports = 0;
vkGetPhysicalDeviceSurfaceSupportKHR(_PD, PresentationQueue.GetQueueIndex(), _Surface, &Supports);
VkSurfaceCapabilitiesKHR SurfaceCapabilities = {};
vkGetPhysicalDeviceSurfaceCapabilitiesKHR(_PD, _Surface, &SurfaceCapabilities);
VkBool32 Supported = 0;
vkGetPhysicalDeviceSurfaceSupportKHR(_PD, PresentationQueue.GetQueueIndex(), _Surface, &Supported);
auto bb = vkGetPhysicalDeviceWin32PresentationSupportKHR(_PD, PresentationQueue.GetQueueIndex());
Everything here returns true, although it seemed suspicious to me that VkSurfaceCapabilitiesKHR returned the same extent for currentExtent, minImageExtent and maxImageExtent.

Answer 1

/* Initialize the library */
if (!glfwInit())
/* Create a windowed mode window and its OpenGL context */
glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
glfwWindowHint(GLFW_DECORATED, _WCI.IsDecorated);
If this is your actual code, it means "if glfwInit() succeeds skip glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);". And as we know not calling the hint causes the error.
The if should perhaps not have negation inside. And (this not being Python) it should have scope {} to cover all the init code.

Answer 2

The solution was to remove the glfwInit call from inside the if and place it outside.
if (!glfwInit()) -> glfwInit()
No idea why, if someone knows why this could've have caused the problem I would love to know.