Add a headless backend
Add a headless backend and a noop renderer, mainly for testing
purposes. Although no rendering is performed with this backend,
this allow some of the code paths inside Weston and shm clients
to be tested without any windowing system or any need for drm
access.
diff --git a/src/noop-renderer.c b/src/noop-renderer.c
new file mode 100644
index 0000000..116fc00
--- /dev/null
+++ b/src/noop-renderer.c
@@ -0,0 +1,74 @@
+/*
+ * Copyright © 2012 Intel Corporation
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of the copyright holders not be used in
+ * advertising or publicity pertaining to distribution of the software
+ * without specific, written prior permission. The copyright holders make
+ * no representations about the suitability of this software for any
+ * purpose. It is provided "as is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
+ * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
+ * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#define _GNU_SOURCE
+
+#include <stdlib.h>
+
+#include "compositor.h"
+
+static void
+noop_renderer_repaint_output(struct weston_output *output,
+ pixman_region32_t *output_damage)
+{
+}
+
+static void
+noop_renderer_flush_damage(struct weston_surface *surface)
+{
+}
+
+static void
+noop_renderer_attach(struct weston_surface *es, struct wl_buffer *buffer)
+{
+}
+
+static void
+noop_renderer_destroy_surface(struct weston_surface *surface)
+{
+}
+
+WL_EXPORT void
+noop_renderer_destroy(struct weston_compositor *ec)
+{
+ free(ec->renderer);
+ ec->renderer = NULL;
+}
+
+WL_EXPORT int
+noop_renderer_init(struct weston_compositor *ec)
+{
+ struct weston_renderer *renderer;
+ struct weston_output *output;
+
+ renderer = malloc(sizeof *renderer);
+ if (renderer == NULL)
+ return -1;
+
+ renderer->repaint_output = noop_renderer_repaint_output;
+ renderer->flush_damage = noop_renderer_flush_damage;
+ renderer->attach = noop_renderer_attach;
+ renderer->destroy_surface = noop_renderer_destroy_surface;
+ ec->renderer = renderer;
+
+ return 0;
+}