int main(int argc, char** argv) {
g_validationLayers = std::vector<const char*> {
"VK_LAYER_LUNARG_mem_tracker",
"VK_LAYER_GOOGLE_unique_objects",
};
// Init GLFW
{
// Handle GLFW errors
glfwSetErrorCallback([](int error, const char* description) {
std::cout << "GLFW error: " << error << " - " << description << std::endl;
});
// Initialize GLFW
if (!glfwInit())
error("Cannot initialize GLFW.");
// Check Vulkan support
if (!glfwVulkanSupported())
error("Cannot find compatible Vulkan client driver.");
}
// Get Validation layers
{
uint32_t numInstanceLayers = 0;
// Get numInstanceLayers
if (vkEnumerateInstanceLayerProperties(&numInstanceLayers, nullptr))
error("Vulkan: Could not enumerate instance layer properties.");
if (numInstanceLayers > 0) {
std::vector<VkLayerProperties> instanceLayers(numInstanceLayers);
if (vkEnumerateInstanceLayerProperties(&numInstanceLayers, instanceLayers.data()))
error("Vulkan: Could not enumerate instance layer properties.");
// Print layers:
std::cout << "Validation layers: " << std::endl;
for (int i = 0; i < numInstanceLayers; ++i) {
std::cout << "\t" << instanceLayers[i].layerName << std::endl;
std::cout << "\t\t" << instanceLayers[i].description << std::endl;
std::cout << std::endl;
}
std::cout << std::endl;
}
else
std::cout << "No validation layers found!" << std::endl;
// TODO: Check Layers
}
// Check instance extensions
{
int numRequiredExtensions;
const char** requiredExtensions;
// Get required extensions from GLFW
{
requiredExtensions = glfwGetRequiredInstanceExtensions((int*)&numRequiredExtensions);
if (numRequiredExtensions > 0) {
// Write to global g_extensions
for (int i = 0; i < numRequiredExtensions; ++i)
g_extensions.push_back(requiredExtensions[i]);
// Print
std::cout << "Required Instance Extensions(GLFW):" << std::endl;
for (int i = 0; i < numRequiredExtensions; ++i) {
std::cout << "\t" << requiredExtensions[i] << std::endl;
}
std::cout << std::endl;
}
// TODO: Check extensions
}
// Get Instance extensions
{
VkResult err;
uint32_t numInstanceExtensions;
err = vkEnumerateInstanceExtensionProperties(nullptr, &numInstanceExtensions, nullptr);
if (numInstanceExtensions > 0) {
std::vector<VkExtensionProperties> instanceExtensions(numInstanceExtensions);
err = vkEnumerateInstanceExtensionProperties(NULL, &numInstanceExtensions, instanceExtensions.data());
// Print
std::cout << "Instance Extensions: " << std::endl;
for (int i = 0; i < numInstanceExtensions; ++i) {
std::cout << "\t" <<instanceExtensions[i].extensionName << std::endl;
std::cout << "\t\t" << instanceExtensions[i].specVersion << std::endl;
std::cout << std::endl;
}
std::cout << std::endl;
}
// TODO: Check instance extensions(with required instance extensions)
}
}
// Create Vulkan Instance
{
VkApplicationInfo app;
{
app.sType = VK_STRUCTURE_TYPE_APPLICATION_INFO;
app.pNext = nullptr;
app.pApplicationName = "Vulkan test 1";
app.applicationVersion = 0;
app.pEngineName = "Vulkan test 1";
app.engineVersion = 0;
app.apiVersion = VK_API_VERSION;
}
VkInstanceCreateInfo instanceInfo;
{
instanceInfo.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
instanceInfo.pNext = nullptr;
instanceInfo.pApplicationInfo = &app;
instanceInfo.enabledLayerCount = g_validationLayers.size();
instanceInfo.ppEnabledLayerNames = g_validationLayers.data();
instanceInfo.enabledExtensionCount = g_extensions.size();
instanceInfo.ppEnabledExtensionNames = g_extensions.data();
}
// TODO: Aligned allocators
VkAllocationCallbacks allocator;
{
allocator.pUserData = nullptr;
allocator.pfnAllocation = [](void* pUserData, size_t size, size_t alignment, VkSystemAllocationScope allocationScope)->void* {
return malloc(size);
};
allocator.pfnFree = [](void* pUserData, void* pMemory) {
free(pMemory);
};
allocator.pfnReallocation = [](void* pUserData, void *pOriginal, size_t size, size_t alignment, VkSystemAllocationScope allocationScope) {
free(pOriginal);
return malloc(size);
};
allocator.pfnInternalAllocation = nullptr;
allocator.pfnInternalFree = nullptr;
allocator.pfnReallocation = nullptr;
}
// Create vulkan instance
VkResult vkError = vkCreateInstance(&instanceInfo, &allocator, &g_vkInstance);
// Handle errors
switch (vkError) {
case VK_ERROR_INCOMPATIBLE_DRIVER:
error("Drivers do not support vulkan. Drivers could be outdated.");
break;
case VK_ERROR_EXTENSION_NOT_PRESENT:
error("Cannot find specified extension.");
break;
case VK_SUCCESS:
// Succes! (prevent default from catching success as error)
std::cout << "Vulkan instance created!" << std::endl;
break;
default:
error("Could not create vulkan Instance. Drivers could be outdated.");
break;
}
}
// Look for GPU device
{
uint32_t numGPUs;
VkResult vkError = vkEnumeratePhysicalDevices(g_vkInstance, &numGPUs, nullptr);
if (numGPUs < 0)
error("vkEnumeratePhysicalDevices could not find any GPU devices.");
if (vkError)
error("vkEnumeratePhysicalDevices could not enumerate GPU devices.");
if (numGPUs > 0) {
std::vector<VkPhysicalDevice> physicalDevices(numGPUs);
if (vkEnumeratePhysicalDevices(g_vkInstance, &numGPUs, physicalDevices.data()))
error("vkEnumeratePhysicalDevices could not enumerate GPU devices.");
g_vkGPU = physicalDevices[0];
std::cout << numGPUs << " GPUs found!" << std::endl;
}
}
// Get queue properties
{
uint32_t numQueues;
vkGetPhysicalDeviceProperties(g_vkGPU, &g_vkGPUProperties);
vkGetPhysicalDeviceQueueFamilyProperties(g_vkGPU, &numQueues, nullptr);
if (numQueues == 0)
error("vkGetPhysicalDeviceQueueFamilyProperties could not find any queues.");
g_vkQueueProperties = std::vector<VkQueueFamilyProperties>(numQueues);
vkGetPhysicalDeviceQueueFamilyProperties(g_vkGPU, &numQueues, g_vkQueueProperties.data());
}
// Look for device layers (Unecessary code that does nothing)
{
uint32_t numDeviceLayers;
if (vkEnumerateDeviceLayerProperties(g_vkGPU, &numDeviceLayers, nullptr))
error("vkEnumerateDeviceLayerProperties failed!");
if (numDeviceLayers > 0) {
std::vector<VkLayerProperties> deviceLayers(numDeviceLayers);
if (vkEnumerateDeviceLayerProperties(g_vkGPU, &numDeviceLayers, deviceLayers.data()))
error("vkEnumerateDeviceLayerProperties failed!");
// TODO: Check device layers.
}
}
// Look for device extensions (swapchain extension)
{
uint32_t numDeviceExtensions;
bool extensionSwapChainFound = false;
if (vkEnumerateDeviceExtensionProperties(g_vkGPU, nullptr, &numDeviceExtensions, nullptr))
error("vkEnumerateDeviceExtensionProperties failed!");
if (numDeviceExtensions > 0) {
std::vector<VkExtensionProperties> deviceExtensions(numDeviceExtensions);
if (vkEnumerateDeviceExtensionProperties(g_vkGPU, nullptr, &numDeviceExtensions, deviceExtensions.data()))
error("vkEnumerateDeviceExtensionProperties failed!");
// Search for swapchain extension
for (VkExtensionProperties extension : deviceExtensions) {
if (!strcmp(extension.extensionName, VK_KHR_SWAPCHAIN_EXTENSION_NAME))
extensionSwapChainFound = true;
}
// Print
std::cout << std::endl << "Extensions:" << std::endl;
for (VkExtensionProperties extension : deviceExtensions) {
std::cout << extension.extensionName << "(" << extension.specVersion << ")" << std::endl;
}
std::cout << std::endl;
}
if (!extensionSwapChainFound)
error("Failed to find the " VK_KHR_SWAPCHAIN_EXTENSION_NAME " extension!");
}
// TODO: Validate
// Get instance function adresses
{
GET_INSTANCE_PROC_ADDR(g_vkInstance, GetPhysicalDeviceSurfaceCapabilitiesKHR);
GET_INSTANCE_PROC_ADDR(g_vkInstance, GetPhysicalDeviceSurfaceFormatsKHR);
GET_INSTANCE_PROC_ADDR(g_vkInstance, GetPhysicalDeviceSurfacePresentModesKHR);
GET_INSTANCE_PROC_ADDR(g_vkInstance, GetPhysicalDeviceSurfaceSupportKHR);
GET_INSTANCE_PROC_ADDR(g_vkInstance, CreateSwapchainKHR);
GET_INSTANCE_PROC_ADDR(g_vkInstance, DestroySwapchainKHR);
GET_INSTANCE_PROC_ADDR(g_vkInstance, GetSwapchainImagesKHR);
GET_INSTANCE_PROC_ADDR(g_vkInstance, AcquireNextImageKHR);
GET_INSTANCE_PROC_ADDR(g_vkInstance, QueuePresentKHR);
}
// Create window
{
glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
g_window = glfwCreateWindow(g_width, g_height, "Vulkan test", NULL, NULL);
if (!g_window)
error("Could not create window!");
glfwSetWindowRefreshCallback(g_window, [](GLFWwindow* window) {
// TODO: draw();
});
glfwSetFramebufferSizeCallback(g_window, [](GLFWwindow* window, int width, int height) {
g_width = width;
g_height = height;
// TODO: resize();
});
}
// Init swapchain
{
glfwCreateWindowSurface(g_vkInstance, g_window, nullptr, &g_vkSurface);
std::vector<VkBool32> supportsPresent(g_vkQueueProperties.size());
for (uint32_t i = 0; i < g_vkQueueProperties.size(); ++i)
g_vkFPGetPhysicalDeviceSurfaceSupportKHR(g_vkGPU, i, g_vkSurface, &supportsPresent[i]);
uint32_t graphicsQueueNodeIndex = UINT32_MAX;
uint32_t presentQueueNodeIndex = UINT32_MAX;
for (uint32_t i = 0; i < g_vkQueueProperties.size(); ++i) {
if (graphicsQueueNodeIndex == UINT32_MAX) {
graphicsQueueNodeIndex = i;
}
if (supportsPresent[i] == VK_TRUE) {
graphicsQueueNodeIndex = i;
presentQueueNodeIndex = i;
break;
}
}
//if (presentQueueNodeIndex == UINT32_MAX) {
// for (uint32_t i = 0; i < g_vkQueueProperties.size(); ++i) {
// if (supportsPresent[i] == VK_TRUE) {
// presentQueueNodeIndex = i;
// }
// }
//}
if (graphicsQueueNodeIndex == UINT32_MAX || presentQueueNodeIndex == UINT32_MAX)
error("Could not find a graphics and a present queue.");
if (graphicsQueueNodeIndex != presentQueueNodeIndex)
error("Could not find a common graphics and present queue.");
g_vkGraphicsQueueNodeIndex = graphicsQueueNodeIndex;
//TODO: init device
{
float queuePriotities = 0.f;
VkDeviceQueueCreateInfo queue;
{
queue.sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO;
queue.pNext = NULL;
queue.queueFamilyIndex = g_vkGraphicsQueueNodeIndex;
queue.queueCount = 1;
queue.pQueuePriorities = &queuePriotities;
}
}
//vkGetDeviceQueue(g_vkDevice, g_vkGraphicsQueueNodeIndex, 0, g_vkQueue);
}
std::cin.get();
return 0;
}
int XdevLSwapChainVulkan::createSurface(IPXdevLWindow window) {
Display* display = static_cast<Display*>(window->getInternal(XdevLInternalName("X11_DISPLAY")));
if(nullptr == display) {
XDEVL_MODULEX_ERROR(XdevLSwapChainVulkan, "Could not get native X11 display information.\n");
return RET_FAILED;
}
Window x11window = (Window)(window->getInternal(XdevLInternalName("X11_WINDOW")));
if(None == x11window) {
XDEVL_MODULEX_ERROR(XdevLSwapChainVulkan, "Could not get native X11 window information.\n");
return RET_FAILED;
}
//
// Get the Surface extensions.
//
VkResult result;
#if defined(_WIN32)
VkWin32SurfaceCreateInfoKHR surfaceCreateInfo;
surfaceCreateInfo.sType = VK_STRUCTURE_TYPE_WIN32_SURFACE_CREATE_INFO_KHR;
surfaceCreateInfo.hinstance = (HINSTANCE)platformHandle; // provided by the platform code
surfaceCreateInfo.hwnd = (HWND)platformWindow; // provided by the platform code
result = vkCreateWin32SurfaceKHR(instance, &surfaceCreateInfo, nullptr, &m_surface);
#elif defined(__ANDROID__)
VkAndroidSurfaceCreateInfoKHR surfaceCreateInfo;
surfaceCreateInfo.sType = VK_STRUCTURE_TYPE_ANDROID_SURFACE_CREATE_INFO_KHR;
surfaceCreateInfo.window = window; // provided by the platform code
result = vkCreateAndroidSurfaceKHR(instance, &surfaceCreateInfo, nullptr, &m_surface);
#else
VkXcbSurfaceCreateInfoKHR surfaceCreateInfo = {
VK_STRUCTURE_TYPE_XCB_SURFACE_CREATE_INFO_KHR,
nullptr,
0,
XGetXCBConnection(display),
(xcb_window_t)x11window
};
result = vkCreateXcbSurfaceKHR(m_instance, &surfaceCreateInfo, nullptr, &m_surface);
#endif
if(result != VK_SUCCESS) {
std::cerr << "Failed to create Vulkan surface: " << vkVkResultToString(result) << std::endl;
return 1;
}
uint32_t queueCount;
vkGetPhysicalDeviceQueueFamilyProperties(m_physicalDevice, &queueCount, nullptr);
std::vector<VkQueueFamilyProperties> queueProps(queueCount);
vkGetPhysicalDeviceQueueFamilyProperties(m_physicalDevice, &queueCount, queueProps.data());
// Will be used to present the swap chain images to the windowing system
std::vector<VkBool32> supportsPresent(queueCount);
for(uint32_t i = 0; i < queueCount; i++) {
fpGetPhysicalDeviceSurfaceSupportKHR(m_physicalDevice, i, m_surface, &supportsPresent[i]);
}
// Search for a graphics and a present queue in the array of queue
// families, try to find one that supports both
uint32_t graphicsQueueNodeIndex = UINT32_MAX;
uint32_t presentQueueNodeIndex = UINT32_MAX;
for(uint32_t i = 0; i < queueCount; i++) {
if((queueProps[i].queueFlags & VK_QUEUE_GRAPHICS_BIT) != 0) {
if(graphicsQueueNodeIndex == UINT32_MAX) {
graphicsQueueNodeIndex = i;
}
if(supportsPresent[i] == VK_TRUE) {
graphicsQueueNodeIndex = i;
presentQueueNodeIndex = i;
break;
}
}
}
if(presentQueueNodeIndex == UINT32_MAX) {
// If there's no queue that supports both present and graphics
// try to find a separate present queue
for(uint32_t i = 0; i < queueCount; ++i) {
if(supportsPresent[i] == VK_TRUE) {
presentQueueNodeIndex = i;
break;
}
}
}
// Exit if either a graphics or a presenting queue hasn't been found
if(graphicsQueueNodeIndex == UINT32_MAX || presentQueueNodeIndex == UINT32_MAX) {
return 1;
}
// todo : Add support for separate graphics and presenting queue
if(graphicsQueueNodeIndex != presentQueueNodeIndex) {
return 1;
}
m_queueNodeIndex = graphicsQueueNodeIndex;
// Get list of supported surface formats
uint32_t formatCount;
result = vkGetPhysicalDeviceSurfaceFormatsKHR(m_physicalDevice, m_surface, &formatCount, nullptr);
if(VK_SUCCESS != result) {
std::cerr << "vkGetPhysicalDeviceSurfaceFormatsKHR failed: " << vkVkResultToString(result) << std::endl;
return 1;
}
assert(formatCount > 0);
std::vector<VkSurfaceFormatKHR> surfaceFormats(formatCount);
result = vkGetPhysicalDeviceSurfaceFormatsKHR(m_physicalDevice, m_surface, &formatCount, surfaceFormats.data());
assert(!result);
// If the surface format list only includes one entry with VK_FORMAT_UNDEFINED,
// there is no preferered format, so we assume VK_FORMAT_B8G8R8A8_UNORM
if((formatCount == 1) && (surfaceFormats[0].format == VK_FORMAT_UNDEFINED)) {
m_colorFormat = VK_FORMAT_B8G8R8A8_UNORM;
} else {
// Always select the first available color format
// If you need a specific format (e.g. SRGB) you'd need to
// iterate over the list of available surface format and
// check for it's presence
m_colorFormat = surfaceFormats[0].format;
}
m_colorSpace = surfaceFormats[0].colorSpace;
return 0;
}
// Creates an os specific surface
// Tries to find a graphics and a present queue
void initSurface(
xcb_connection_t* connection, xcb_window_t window
)
{
VkResult err;
// Create surface depending on OS
VkXcbSurfaceCreateInfoKHR surfaceCreateInfo = {};
surfaceCreateInfo.sType = VK_STRUCTURE_TYPE_XCB_SURFACE_CREATE_INFO_KHR;
surfaceCreateInfo.connection = connection;
surfaceCreateInfo.window = window;
err = vkCreateXcbSurfaceKHR(instance, &surfaceCreateInfo, nullptr, &surface);
// Get available queue family properties
uint32_t queueCount;
vkGetPhysicalDeviceQueueFamilyProperties(physicalDevice, &queueCount, NULL);
assert(queueCount >= 1);
std::vector<VkQueueFamilyProperties> queueProps(queueCount);
vkGetPhysicalDeviceQueueFamilyProperties(physicalDevice, &queueCount, queueProps.data());
// Iterate over each queue to learn whether it supports presenting:
// Find a queue with present support
// Will be used to present the swap chain images to the windowing system
std::vector<VkBool32> supportsPresent(queueCount);
for (uint32_t i = 0; i < queueCount; i++)
{
fpGetPhysicalDeviceSurfaceSupportKHR(physicalDevice, i, surface, &supportsPresent[i]);
}
// Search for a graphics and a present queue in the array of queue
// families, try to find one that supports both
uint32_t graphicsQueueNodeIndex = UINT32_MAX;
uint32_t presentQueueNodeIndex = UINT32_MAX;
for (uint32_t i = 0; i < queueCount; i++)
{
if ((queueProps[i].queueFlags & VK_QUEUE_GRAPHICS_BIT) != 0)
{
if (graphicsQueueNodeIndex == UINT32_MAX)
{
graphicsQueueNodeIndex = i;
}
if (supportsPresent[i] == VK_TRUE)
{
graphicsQueueNodeIndex = i;
presentQueueNodeIndex = i;
break;
}
}
}
if (presentQueueNodeIndex == UINT32_MAX)
{
// If there's no queue that supports both present and graphics
// try to find a separate present queue
for (uint32_t i = 0; i < queueCount; ++i)
{
if (supportsPresent[i] == VK_TRUE)
{
presentQueueNodeIndex = i;
break;
}
}
}
// Exit if either a graphics or a presenting queue hasn't been found
if (graphicsQueueNodeIndex == UINT32_MAX || presentQueueNodeIndex == UINT32_MAX)
{
feather::vulkan::tools::exitFatal("Could not find a graphics and/or presenting queue!", "Fatal error");
}
// todo : Add support for separate graphics and presenting queue
if (graphicsQueueNodeIndex != presentQueueNodeIndex)
{
feather::vulkan::tools::exitFatal("Separate graphics and presenting queues are not supported yet!", "Fatal error");
}
queueNodeIndex = graphicsQueueNodeIndex;
// Get list of supported surface formats
uint32_t formatCount;
err = fpGetPhysicalDeviceSurfaceFormatsKHR(physicalDevice, surface, &formatCount, NULL);
assert(!err);
assert(formatCount > 0);
std::vector<VkSurfaceFormatKHR> surfaceFormats(formatCount);
err = fpGetPhysicalDeviceSurfaceFormatsKHR(physicalDevice, surface, &formatCount, surfaceFormats.data());
assert(!err);
// If the surface format list only includes one entry with VK_FORMAT_UNDEFINED,
// there is no preferered format, so we assume VK_FORMAT_B8G8R8A8_UNORM
if ((formatCount == 1) && (surfaceFormats[0].format == VK_FORMAT_UNDEFINED))
{
colorFormat = VK_FORMAT_B8G8R8A8_UNORM;
}
else
{
// Always select the first available color format
// If you need a specific format (e.g. SRGB) you'd need to
// iterate over the list of available surface format and
// check for it's presence
colorFormat = surfaceFormats[0].format;
}
colorSpace = surfaceFormats[0].colorSpace;
}