feat: let user do something on each iteration

include/window.hpp

@@ -299,6 +299,8 @@ private:
 		wl_egl_window_resize(window->m_egl_window, width, height, 0, 0);
 		glViewport(0, 0, width, height);
 		xdg_surface_set_window_geometry(window->m_xsurface, 0, 0, width, height);
+		window->m_width = width;
+		window->m_height = height;
   }
 
   static void xtoplevel_handle_close(void *data,
@@ -374,16 +376,19 @@ public:
 
     const char *vs_src = "attribute vec2 pos;\n"
                          "uniform float angle;\n"
+                         "varying vec2 vPos;\n"
                          "void main() {\n"
                          "  float c = cos(angle);\n"
                          "  float s = sin(angle);\n"
                          "  mat2 rot = mat2(c, -s, s, c);\n"
                          "  gl_Position = vec4(rot * pos, 0.0, 1.0);\n"
+                         "  vPos = rot * pos;\n"
                          "}\n";
 
     const char *fs_src = "precision mediump float;\n"
+												 "varying vec2 vPos;\n"
                          "void main() {\n"
-                         "  gl_FragColor = vec4(1.0, 0.3, 0.2, 1.0);\n"
+                         "  gl_FragColor = vec4(vPos, 0.2, 1.0);\n"
                          "}\n";
 
     m_program = create_program(vs_src, fs_src);
@@ -422,6 +427,8 @@ public:
     xdg_toplevel_add_listener(m_toplevel, &m_toplevel_listener, this);
 
     wl_surface_commit(m_wsurface);
+
+		m_runnning = true;
   }
   ~Window() {}
 
@@ -429,11 +436,8 @@ public:
   Window(Window &&) = delete;
 
 public:
-  void Run() {
+  bool Running() {
-		m_runnning = true;
+    return m_runnning && wl_display_dispatch(AppState::GetInstance()->m_display) != -1;
-    printf("[DEBUG] Run(): display = %p\n", AppState::GetInstance()->m_display);
-    while (m_runnning && wl_display_dispatch(AppState::GetInstance()->m_display) != -1) {
-    }
   }
 
 private:

src/main.cpp

@@ -10,7 +10,10 @@ int main(int argc, char **argv) {
 	Renderer::GetInstance();
 
 	Window window(720, 480);
-	window.Run();
+
+	while (window.Running()) {
+
+	}
 
   return 0;
 }