tinywl: declare allocator

tinywl/meson.build

@@ -0,0 +1,6 @@
+executable(
+	'tinywl',
+	['tinywl.c', protocols_server_header['xdg-shell'], protocols_code['xdg-shell']],
+	dependencies: wlroots,
+	include_directories: [wlr_inc, proto_inc],
+)

tinywl/tinywl.c

@@ -6,6 +6,7 @@
 #include <time.h>
 #include <unistd.h>
 #include <wayland-server-core.h>
+#include <wlr/allocator.h>
 #include <wlr/backend.h>
 #include <wlr/render/wlr_renderer.h>
 #include <wlr/types/wlr_cursor.h>
@@ -34,6 +35,7 @@ struct tinywl_server {
 	struct wl_display *wl_display;
 	struct wlr_backend *backend;
 	struct wlr_renderer *renderer;
+	struct wlr_allocator *allocator;
 
 	struct wlr_xdg_shell *xdg_shell;
 	struct wl_listener new_xdg_surface;
@@ -847,6 +849,12 @@ int main(int argc, char *argv[]) {
 	server.renderer = wlr_backend_get_renderer(server.backend);
 	wlr_renderer_init_wl_display(server.renderer, server.wl_display);
 
+	/* The allocator is the bridge between the renderer and the backend.
+	 * It handles the buffer managment between the two, allowing wlroots
+	 * to render onto the screen */
+	server.allocator = wlr_allocator_autocreate(server.backend,
+			server.renderer);
+
 	/* This creates some hands-off wlroots interfaces. The compositor is
 	 * necessary for clients to allocate surfaces and the data device manager
 	 * handles the clipboard. Each of these wlroots interfaces has room for you