+static VkSurfaceKHR vk_surf;
+static int vsz, fsz;
+static struct vk_renderer vk_rnd;
+static struct vk_swapchain vk_chain;
+
+static struct vk_semaphores vk_sema;
+
+/* empty for as long as we hardcode the vertices in the vertex shader */
+static struct vk_vertex_info vk_vert_info;