example - shared ptr

examples/createContext/main.cpp

@@ -5,6 +5,7 @@
 
 #include <cstdlib>
 #include <exception>
+#include <memory>
 #include "GLFW/glfw3.h"
 #include "shared/logger.h"
 #include "shared/window.h"
@@ -17,14 +18,21 @@ int main() {
 
     GLFWwindow *window = OatmealUtils::initWindow("Oatmeal - createContext", 800, 600);
 
+
+    std::shared_ptr<Oatmeal::ctx> ctx = nullptr;
+
+    OatmealUtils::getLogger("context")->info("Creating context");
     try {
-        Oatmeal::ctx ctx(window);
+        ctx = std::make_shared<Oatmeal::ctx>(window);
     } catch (const std::exception &e) {
         OatmealUtils::getLogger("context")->critical("{}", e.what());
         return EXIT_FAILURE;
     }
 
+    OatmealUtils::getLogger("context")->info("Device name: {}", ctx->getDeviceName());
+    OatmealUtils::getLogger("context")->info("Device Type: {}", ctx->getDeviceType());
 
+    OatmealUtils::getLogger("context")->info("Starting main loop");
     while (!glfwWindowShouldClose(window)) {
         glfwPollEvents();
     }

examples/shared/shared/window.h

@@ -6,16 +6,16 @@
 namespace OatmealUtils {
     inline GLFWwindow *initWindow(const char *title, uint32_t width, uint32_t height) {
         OatmealUtils::createLogger("window", nullptr);
-        OatmealUtils::get("window")->debug("Initializing window backend");
+        OatmealUtils::getLogger("window")->debug("Initializing window backend");
         glfwInit();
         glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
         glfwWindowHint(GLFW_RESIZABLE, GLFW_FALSE);
-        OatmealUtils::get("window")->debug("Creating window");
+        OatmealUtils::getLogger("window")->debug("Creating window");
         GLFWwindow *window = glfwCreateWindow(width, height, title, nullptr, nullptr);
         if (window == nullptr) {
             const char *desc;
             uint32_t code = glfwGetError(&desc);
-            OatmealUtils::get("window")->critical("Failed to create window: ({}) {}", code, desc);
+            OatmealUtils::getLogger("window")->critical("Failed to create window: ({}) {}", code, desc);
             exit(EXIT_FAILURE);
         }
 

oatmeal/src/ctx-device.cpp

@@ -0,0 +1,64 @@
+#include <stdexcept>
+#include "ctx.h"
+#include "vulkan/vulkan.hpp"
+#include "vulkan/vulkan_raii.hpp"
+
+namespace Oatmeal {
+
+    void ctx::createLogicalDevice() {
+        std::vector<vk::QueueFamilyProperties> queueFamilyProperties = m_physicalDevice.getQueueFamilyProperties();
+
+        m_queueIndex = ~0;
+        for (uint32_t qfpIndex = 0; qfpIndex < queueFamilyProperties.size(); qfpIndex++) {
+            if ((queueFamilyProperties[qfpIndex].queueFlags & vk::QueueFlagBits::eGraphics) &&
+                m_physicalDevice.getSurfaceSupportKHR(qfpIndex, *m_surface)) {
+                m_queueIndex = qfpIndex;
+                break;
+            }
+        }
+
+        if (m_queueIndex == ~0) {
+            // TODO: Find a better solution then just throwing a fit
+            throw std::runtime_error("Failed to find a queue that supports graphics and presentation");
+        }
+
+        vk::PhysicalDeviceFeatures deviceFeatures;
+
+        vk::StructureChain<vk::PhysicalDeviceFeatures2, vk::PhysicalDeviceVulkan13Features,
+                           vk::PhysicalDeviceExtendedDynamicStateFeaturesEXT>
+                featureChain = {
+                        {.features = {.samplerAnisotropy = true}},
+                        {.synchronization2 = true, .dynamicRendering = true},
+                        {.extendedDynamicState = true},
+                };
+
+        float queuePriority = 0.5f;
+        vk::DeviceQueueCreateInfo deviceQueueCreateInfo = {
+                .queueFamilyIndex = m_queueIndex,
+                .queueCount = 1,
+                .pQueuePriorities = &queuePriority,
+        };
+
+        vk::DeviceCreateInfo deviceCreateInfo = {
+                .pNext = &featureChain.get<vk::PhysicalDeviceFeatures2>(),
+                .queueCreateInfoCount = 1,
+                .pQueueCreateInfos = &deviceQueueCreateInfo,
+                .enabledExtensionCount = static_cast<uint32_t>(requiredDeviceExtensions.size()),
+                .ppEnabledExtensionNames = requiredDeviceExtensions.data(),
+        };
+
+        m_device = vk::raii::Device(m_physicalDevice, deviceCreateInfo);
+        m_queue = vk::raii::Queue(m_device, m_queueIndex, 0);
+    }
+
+
+    std::string ctx::getDeviceName() const {
+        const vk::PhysicalDeviceProperties deviceProperties = m_physicalDevice.getProperties();
+        return deviceProperties.deviceName;
+    }
+
+    std::string ctx::getDeviceType() const {
+        const vk::PhysicalDeviceProperties deviceProperties = m_physicalDevice.getProperties();
+        return vk::to_string(deviceProperties.deviceType);
+    }
+} // namespace Oatmeal

oatmeal/src/ctx.cpp

@@ -1,8 +1,14 @@
 #include "ctx.h"
-#include <cstdint>
 
 namespace Oatmeal {
-    ctx::ctx(GLFWwindow *window) { createInstance(); }
+    ctx::ctx(GLFWwindow *window) {
+        createInstance();
+        m_window = window;
+        createSurface();
+        pickPhysicalDevice();
+        m_msaaSamples = getMaxUsableSampleCount();
+        createLogicalDevice();
+    }
 
     ctx::~ctx() {}
 

oatmeal/src/ctx.h

@@ -41,11 +41,17 @@ namespace Oatmeal {
     class ctx {
     public:
         ctx(GLFWwindow *window);
+
+        std::string getDeviceName() const;
+        std::string getDeviceType() const;
+
         ~ctx();
 
     private:
         // Members //
 
+        GLFWwindow *m_window = nullptr;
+
         vk::raii::Context m_context;
         vk::raii::Instance m_instance = nullptr;
         vk::DebugUtilsMessengerEXT m_debugMessenger = nullptr;
@@ -81,5 +87,14 @@ namespace Oatmeal {
         void createInstance();
         std::vector<const char *> getRequiredExtensions();
         void setupDebugMessenger();
+
+        void createSurface();
+
+        void pickPhysicalDevice();
+        bool isPhysicalDeviceSupported(vk::raii::PhysicalDevice device);
+        uint32_t scorePhysicalDevice(vk::raii::PhysicalDevice device);
+        vk::SampleCountFlagBits getMaxUsableSampleCount();
+
+        void createLogicalDevice();
     };
 } // namespace Oatmeal

oatmeal/src/ctx_attachments.cpp

@@ -0,0 +1,27 @@
+#include "ctx.h"
+#include "vulkan/vulkan.hpp"
+
+namespace Oatmeal {
+
+    vk::SampleCountFlagBits ctx::getMaxUsableSampleCount() {
+        vk::PhysicalDeviceProperties physicalDeviceProperties = m_physicalDevice.getProperties();
+
+        vk::SampleCountFlags count = physicalDeviceProperties.limits.framebufferColorSampleCounts &
+                                     physicalDeviceProperties.limits.framebufferDepthSampleCounts;
+
+        if (count & vk::SampleCountFlagBits::e16) {
+            return vk::SampleCountFlagBits::e16;
+        }
+        if (count & vk::SampleCountFlagBits::e8) {
+            return vk::SampleCountFlagBits::e8;
+        }
+        if (count & vk::SampleCountFlagBits::e4) {
+            return vk::SampleCountFlagBits::e4;
+        }
+        if (count & vk::SampleCountFlagBits::e2) {
+            return vk::SampleCountFlagBits::e2;
+        }
+
+        return vk::SampleCountFlagBits::e1;
+    }
+} // namespace Oatmeal

oatmeal/src/ctx_instance.cpp

@@ -1,5 +1,4 @@
 #include <GLFW/glfw3.h>
-#include <X11/Xlib.h>
 #include <cstdint>
 #include <iostream>
 #include <stdexcept>

oatmeal/src/ctx_physicalDevice.cpp

@@ -0,0 +1,83 @@
+#include <algorithm>
+#include <cstdint>
+#include <map>
+#include <stdexcept>
+#include <utility>
+#include <vulkan/vulkan_core.h>
+#include <vulkan/vulkan_raii.hpp>
+#include "ctx.h"
+#include "vulkan/vulkan.hpp"
+
+namespace Oatmeal {
+
+    void ctx::pickPhysicalDevice() {
+        std::vector<vk::raii::PhysicalDevice> physicalDevices = m_instance.enumeratePhysicalDevices();
+        std::vector<vk::raii::PhysicalDevice> supportedDevices{};
+
+        for (const auto device: physicalDevices) {
+            if (isPhysicalDeviceSupported(device)) {
+                supportedDevices.emplace_back(device);
+            }
+        }
+        if (supportedDevices.empty()) {
+            throw std::runtime_error("Failed to find a supported device");
+        }
+
+        std::multimap<uint32_t, vk::raii::PhysicalDevice> scores;
+        for (const auto device: supportedDevices) {
+            uint32_t score = scorePhysicalDevice(device);
+            scores.insert(std::make_pair(score, device));
+        }
+        m_physicalDevice = scores.rbegin()->second;
+    }
+
+    bool ctx::isPhysicalDeviceSupported(vk::raii::PhysicalDevice device) {
+        // Check for vulkan 1.4 support
+        bool supportsVulkan14 = device.getProperties().apiVersion >= VK_API_VERSION_1_4;
+
+        // Check for graphics queue support
+        auto queueFamilies = device.getQueueFamilyProperties();
+        bool supportsGraphics = std::ranges::any_of(
+                queueFamilies, [](auto const &qfp) { return !!(qfp.queueFlags & vk::QueueFlagBits::eGraphics); });
+
+        // Check for extension support
+        auto availableDeviceExtensions = device.enumerateDeviceExtensionProperties();
+        bool supportsAllRequiredExtensions = std::ranges::all_of(
+                requiredDeviceExtensions, [&availableDeviceExtensions](auto const &requiredDeviceExtension) {
+                    return std::ranges::any_of(
+                            availableDeviceExtensions, [requiredDeviceExtension](auto const &availableDeviceExtension) {
+                                return strcmp(availableDeviceExtension.extensionName, requiredDeviceExtension) == 0;
+                            });
+                });
+
+
+        // Check for feature support
+        auto features = device.template getFeatures2<vk::PhysicalDeviceFeatures2, vk::PhysicalDeviceVulkan13Features,
+                                                     vk::PhysicalDeviceExtendedDynamicStateFeaturesEXT>();
+
+        bool supportsRequiredFeatures =
+                features.template get<vk::PhysicalDeviceFeatures2>().features.samplerAnisotropy &&
+                features.template get<vk::PhysicalDeviceVulkan13Features>().dynamicRendering &&
+                features.template get<vk::PhysicalDeviceVulkan13Features>().synchronization2 &&
+                features.template get<vk::PhysicalDeviceExtendedDynamicStateFeaturesEXT>().extendedDynamicState;
+
+        return supportsVulkan14 && supportsGraphics && supportsAllRequiredExtensions && supportsRequiredFeatures;
+    }
+
+
+    uint32_t ctx::scorePhysicalDevice(vk::raii::PhysicalDevice device) {
+        uint32_t score = 0;
+        vk::PhysicalDeviceProperties physicalDeviceProperties = device.getProperties();
+
+        if (physicalDeviceProperties.deviceType == vk::PhysicalDeviceType::eDiscreteGpu) {
+            score += 100;
+        } else if (physicalDeviceProperties.deviceType == vk::PhysicalDeviceType::eIntegratedGpu) {
+            score += 50;
+        } else if (physicalDeviceProperties.deviceType == vk::PhysicalDeviceType::eVirtualGpu) {
+            score += 10;
+        }
+
+        return score;
+    }
+
+} // namespace Oatmeal

oatmeal/src/ctx_surface.cpp

@@ -0,0 +1,17 @@
+#include "ctx.h"
+
+#include <GLFW/glfw3.h>
+#include <GLFW/glfw3native.h>
+#include <vulkan/vulkan_core.h>
+#include <vulkan/vulkan_raii.hpp>
+
+namespace Oatmeal {
+
+    void ctx::createSurface() {
+        VkSurfaceKHR _surface;
+        if (glfwCreateWindowSurface(*m_instance, m_window, nullptr, &_surface)) {
+            throw std::runtime_error("Failed to create window surface");
+        }
+        m_surface = vk::raii::SurfaceKHR(m_instance, _surface);
+    }
+} // namespace Oatmeal