Moved functions and the like to appropriate enough file structure for now

src/arena_allocator.c

@@ -1,6 +1,5 @@
 #include "arena_allocator.h"
 #include <assert.h>
-#include <math.h>
 #include <stddef.h>
 #include <stdlib.h>
 
@@ -12,7 +11,7 @@ Arena arena_init(size_t capacity) {
 
 void arena_deinit(Arena *arena) {
   free(arena->data);
-  *arena = (Arena){.capacity = NAN, .size = 0, .data = NULL};
+  *arena = (Arena){.capacity = 0, .size = 0, .data = NULL};
 }
 
 void *arena_alloc(Arena *arena, size_t size) {

src/arena_allocator.h

@@ -5,7 +5,7 @@
 typedef struct {
   size_t capacity;
   size_t size;
-  void *data;
+  char *data;
 } Arena;
 
 Arena arena_init(size_t capacity);

src/vulkan_wrapper.h

@@ -1 +1,43 @@
 #pragma once
+
+#include <vulkan/vulkan_core.h>
+
+#define GLFW_INCLUDE_VULKAN
+#include <GLFW/glfw3.h>
+
+#define MAX_FRAMES_IN_FLIGHT 2
+
+typedef struct {
+  GLFWwindow *window;
+  VkInstance instance;
+  VkDebugUtilsMessengerEXT debugMessenger;
+  VkSurfaceKHR surface;
+  VkPhysicalDevice physicalDevice;
+  VkDevice device;
+  VkQueue graphicsQueue;
+  VkQueue presentQueue;
+  VkSwapchainKHR swapChain;
+  VkImage *swapChainImages;
+  uint32_t swapChainImageCount;
+  VkFormat swapChainImageFormat;
+  VkExtent2D swapChainExtent;
+  VkImageView *swapChainImageViews;
+  uint32_t swapChainImageViewCount;
+  VkRenderPass renderPass;
+  VkPipelineLayout pipelineLayout;
+  VkPipeline graphicsPipeline;
+  VkFramebuffer *swapChainFramebuffers;
+  uint32_t swapChainFramebufferCount;
+  VkCommandPool commandPool;
+  VkCommandBuffer commandBuffers[MAX_FRAMES_IN_FLIGHT];
+  VkSemaphore imageAvailableSemaphores[MAX_FRAMES_IN_FLIGHT];
+  VkSemaphore renderFinishedSemaphore[MAX_FRAMES_IN_FLIGHT];
+  VkFence inFlightFences[MAX_FRAMES_IN_FLIGHT];
+  uint32_t currentFrame; // initialised to 0
+} VulkanApp;
+
+void vulkan_init(VulkanApp *app);
+void mainLoop(VulkanApp *app);
+void vulkan_deinit(VulkanApp *app);
+
+void framebufferResizeCallback(GLFWwindow *window, int width, int height);

src/window.c

@@ -0,0 +1,18 @@
+#include "window.h"
+
+#define GLFW_INCLUDE_VULKAN
+#include <GLFW/glfw3.h>
+
+void window_init(VulkanApp *app) {
+  glfwInit();
+  glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
+  glfwWindowHint(GLFW_RESIZABLE, GLFW_TRUE);
+  app->window = glfwCreateWindow(800, 600, "Vulkan", NULL, NULL);
+
+  glfwSetFramebufferSizeCallback(app->window, framebufferResizeCallback);
+}
+
+void window_deinit(VulkanApp *app) {
+  glfwDestroyWindow(app->window);
+  glfwTerminate();
+}

src/window.h

@@ -1 +1,7 @@
 #pragma once
+
+#include "vulkan_wrapper.h"
+
+void window_init(VulkanApp *app);
+
+void window_deinit(VulkanApp *app);