From b90c980bee2c5e848852fc09d97afddaf97feb9b Mon Sep 17 00:00:00 2001
From: firewire <firewire0x8@protonmail.com>
Date: Tue, 14 Apr 2026 18:49:35 -0400
Subject: [PATCH] ctx - device

---
 examples/createContext/main.cpp |  5 +++
 oatmeal/src/ctx-device.cpp      | 64 +++++++++++++++++++++++++++++++++
 oatmeal/src/ctx.cpp             |  2 ++
 oatmeal/src/ctx.h               |  7 ++++
 4 files changed, 78 insertions(+)
 create mode 100644 oatmeal/src/ctx-device.cpp

diff --git a/examples/createContext/main.cpp b/examples/createContext/main.cpp
index f12f7d8..9bfca2f 100644
--- a/examples/createContext/main.cpp
+++ b/examples/createContext/main.cpp
@@ -17,14 +17,19 @@ int main() {
 
     GLFWwindow *window = OatmealUtils::initWindow("Oatmeal - createContext", 800, 600);
 
+
+    OatmealUtils::getLogger("context")->info("Creating context");
     try {
         Oatmeal::ctx ctx(window);
+        OatmealUtils::getLogger("context")->info("Device name: {}", ctx.getDeviceName());
+        OatmealUtils::getLogger("context")->info("Device name: {}", ctx.getDeviceType());
     } catch (const std::exception &e) {
         OatmealUtils::getLogger("context")->critical("{}", e.what());
         return EXIT_FAILURE;
     }
 
 
+    OatmealUtils::getLogger("context")->info("Starting main loop");
     while (!glfwWindowShouldClose(window)) {
         glfwPollEvents();
     }
diff --git a/oatmeal/src/ctx-device.cpp b/oatmeal/src/ctx-device.cpp
new file mode 100644
index 0000000..8835a5b
--- /dev/null
+++ b/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
diff --git a/oatmeal/src/ctx.cpp b/oatmeal/src/ctx.cpp
index 929088d..0a5fb18 100644
--- a/oatmeal/src/ctx.cpp
+++ b/oatmeal/src/ctx.cpp
@@ -6,6 +6,8 @@ namespace Oatmeal {
         m_window = window;
         createSurface();
         pickPhysicalDevice();
+        m_msaaSamples = getMaxUsableSampleCount();
+        createLogicalDevice();
     }
 
     ctx::~ctx() {}
diff --git a/oatmeal/src/ctx.h b/oatmeal/src/ctx.h
index 73461ce..44ae493 100644
--- a/oatmeal/src/ctx.h
+++ b/oatmeal/src/ctx.h
@@ -41,6 +41,10 @@ namespace Oatmeal {
     class ctx {
     public:
         ctx(GLFWwindow *window);
+
+        std::string getDeviceName() const;
+        std::string getDeviceType() const;
+
         ~ctx();
 
     private:
@@ -83,11 +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