x11 window and opengl initialization and drawing of basic quad

main.c

@@ -1,9 +1,60 @@
-int main(int argc, char *argv[]) {
-  // TODO: everything from scratch
-  // X11 for windowing and input
-  // OpenGL for graphics
-  // OpenAL for audio ?? (copilot suggested this. I do want to do some audio desu)
-  // Simply port the js algo for sudoku generation
-  // Maybe after the game works fine we can use some winapi to add windows support
+#include <stdbool.h>
+
+#include <glad/glx.h>
+
+#include "x11.h"
+#include "cudoku.h"
+
+// TODO: everything from scratch
+// X11 for windowing and input
+// OpenGL for graphics
+// OpenAL for audio ?? (copilot suggested this. I do want to do some audio desu)
+// Simply port the js algo for sudoku generation
+// Maybe after the game works fine we can use some winapi to add windows support
+
+Display *display;
+Window window;
+
+int main() {
+  int res = init_x11(&display, &window);
+  if (res < 0) return 1;
+
+  int width = 900, height = 900;
+
+  Shader board_shader = create_shader("shaders/board_v.glsl", "shaders/board_f.glsl");
+  unsigned int board_vao = prepare_bg_rect(board_shader);
+
+  bool quit = false;
+  while (!quit) {
+    while (XPending(display)) {
+      XEvent xev;
+      XNextEvent(display, &xev);
+
+      if (xev.type == ConfigureNotify) {
+        XConfigureEvent xce = xev.xconfigure;
+
+        if (xce.width != width || xce.height != height) {
+          width = xce.width;
+          height = xce.height;
+          resize_x11_window(display, window);
+        }
+
+      } else if (xev.type == KeyPress && XLookupKeysym(&xev.xkey, 0) == XK_Escape) {
+        quit = true;
+        break;
+      }
+    }
+
+    glClearColor(0.0, 0.0, 0.0, 1.0);
+    glClear(GL_COLOR_BUFFER_BIT);
+
+    draw_bg_rect(board_shader, board_vao);
+
+    glXSwapBuffers(display, window);
+  }
+
+  close_x11(&display, &window);
+
   return 0;
 }
+