From 5076e4609aa5bc674255e7165bf1e834c875bfc8 Mon Sep 17 00:00:00 2001
From: Warwick <warwick.l.e.new@gmail.com>
Date: Thu, 8 Feb 2024 12:56:47 +0000
Subject: [PATCH] Starting to move into setting up vulkan

---
 src/main.c | 125 ++++++++++++++++++++++++++++++-----------------------
 src/vec.c  |   5 +++
 src/vec.h  |   1 +
 3 files changed, 78 insertions(+), 53 deletions(-)

diff --git a/src/main.c b/src/main.c
index 9438e8c..c8fc353 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,65 +1,84 @@
 #include "vec.h"
 #include <SDL.h>
+#include <SDL_log.h>
+#include <SDL_video.h>
 #include <SDL_vulkan.h>
 #include <stdbool.h>
 #include <stdio.h>
+#include <stdlib.h>
+#include <vulkan/vulkan.h>
+#include <vulkan/vulkan_core.h>
+
+VkInstance create_instance(SDL_Window *window) {
+  VkApplicationInfo app_info;
+  app_info.sType = VK_STRUCTURE_TYPE_APPLICATION_INFO;
+  app_info.pApplicationName = "Hello Triangle";
+  app_info.applicationVersion = VK_MAKE_VERSION(1, 0, 0);
+  app_info.pEngineName = "No Engine";
+  app_info.engineVersion = VK_MAKE_VERSION(1, 0, 0);
+  app_info.apiVersion = VK_API_VERSION_1_0;
+
+  uint32_t sdl_extension_count = 0;
+  const char **sdl_extensions;
+  if (!SDL_Vulkan_GetInstanceExtensions(window, &sdl_extension_count,
+                                        sdl_extensions)) {
+    fprintf(stderr, "SDL_Init Error: %s\n", SDL_GetError());
+    printf("Couldn't get required Vulkan Extentions for window\n");
+    exit(EXIT_FAILURE);
+  }
+
+  VkInstanceCreateInfo create_info;
+  create_info.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
+  create_info.pApplicationInfo = &app_info;
+  create_info.enabledExtensionCount = sdl_extension_count;
+  create_info.ppEnabledExtensionNames = sdl_extensions;
+  create_info.enabledLayerCount = 0;
+
+  VkInstance instance;
+  if (vkCreateInstance(&create_info, NULL, &instance)) {
+    printf("failed to create vulkan instance!");
+    exit(EXIT_FAILURE);
+  }
+  return instance;
+}
+
+void initVulkan(SDL_Window *window) { create_instance(window); }
 
 int main() {
-  vector *vec = vec_create(sizeof(int));
-  for (int x = 0; x < 110; x++) {
-    vec_push_back(vec, &x);
+  if (SDL_Init(SDL_INIT_VIDEO) < 0) {
+    printf("Failed to initialize the SDL2 library\n");
+    return EXIT_FAILURE;
   }
-  int i = 99999999;
-  vec_insert(vec, &i, 5);
-  vec_push_front(vec, &i);
-  printf("Capacity before shrink: %zu | ", vec_capacity(vec));
-  vec_shrink_to_fit(vec);
-  printf("Capacity after: %zu\n", vec_capacity(vec));
-  vec_erase(vec, 0);
-  vec_erase(vec, 101);
-  for (int x = 0; x < 110; x++) {
-    printf("%d ", *(int *)vec_get(vec, x));
+  SDL_Vulkan_LoadLibrary(NULL);
+  SDL_Window *window = SDL_CreateWindow(
+      "SDL2 Vulkan Window", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 680,
+      480, SDL_WINDOW_SHOWN | SDL_WINDOW_VULKAN);
+  if (!window) {
+    printf("Failed to create window\n");
+    return EXIT_FAILURE;
   }
-  printf("\n");
-  vec_destroy(vec);
 
-  // if (SDL_Init(SDL_INIT_VIDEO) < 0) {
-  //   printf("Failed to initialize the SDL2 library\n");
-  //   return -1;
-  // }
+  initVulkan(window);
 
-  // SDL_Window *window =
-  //     SDL_CreateWindow("SDL2 Window", SDL_WINDOWPOS_CENTERED,
-  //                      SDL_WINDOWPOS_CENTERED, 680, 480, SDL_WINDOW_VULKAN);
-  // if (!window) {
-  //   printf("Failed to create window\n");
-  //   return -1;
-  // }
-
-  // SDL_Surface *window_surface = SDL_GetWindowSurface(window);
-  // if (!window_surface) {
-  //   printf("Failed to get the surface from the window\n");
-  //   return -1;
-  // }
-
-  // bool running = true;
-  // while (running) {
-  //   SDL_Event input;
-  //   while (SDL_PollEvent(&input) > 0) {
-  //     if (input.type == SDL_QUIT) {
-  //       running = false;
-  //     }
-  //     switch (input.type) {
-  //     case SDL_QUIT:
-  //       running = false;
-  //     case SDL_KEYDOWN: {
-  //       const Uint8 *keys = SDL_GetKeyboardState(NULL);
-  //       if (keys[SDL_SCANCODE_ESCAPE])
-  //         running = false;
-  //     }
-  //     }
-  //   }
-  // }
-
-  // SDL_UpdateWindowSurface(window);
+  bool running = true;
+  while (running) {
+    SDL_Event input;
+    while (SDL_PollEvent(&input) > 0) {
+      if (input.type == SDL_QUIT) {
+        running = false;
+      }
+      switch (input.type) {
+      case SDL_QUIT:
+        running = false;
+      case SDL_KEYDOWN: {
+        const Uint8 *keys = SDL_GetKeyboardState(NULL);
+        if (keys[SDL_SCANCODE_ESCAPE])
+          running = false;
+      }
+      }
+    }
+  }
+  SDL_DestroyWindow(window);
+  SDL_Quit();
+  return EXIT_SUCCESS;
 }
diff --git a/src/vec.c b/src/vec.c
index e51db7d..a9376c5 100644
--- a/src/vec.c
+++ b/src/vec.c
@@ -101,3 +101,8 @@ size_t vec_capacity(vector *vec) {
   assert(vec != NULL);
   return vec->capacity;
 }
+
+void* vec_data(vector *vec) {
+  assert(vec != NULL);
+  return vec->elements;
+}
diff --git a/src/vec.h b/src/vec.h
index 72c324f..96073e5 100644
--- a/src/vec.h
+++ b/src/vec.h
@@ -22,3 +22,4 @@ void vec_pop_back(vector *vec);
 void *vec_get(vector *vec, uint index);
 size_t vec_size(vector *vec);
 size_t vec_capacity(vector *vec);
+void* vec_data(vector *vec);