#include <cairo-xcb.h>

static xcb_visualtype_t *
lookup_visual(xcb_screen_t *s, xcb_visualid_t visual)
{
	xcb_depth_iterator_t d;
	d = xcb_screen_allowed_depths_iterator(s);
	for (; d.rem; xcb_depth_next(&d)) {
		xcb_visualtype_iterator_t v = xcb_depth_visuals_iterator(d.data);
		for (; v.rem; xcb_visualtype_next(&v)) {
			if (v.data->visual_id == visual)
				return v.data;
		}
	}

	return NULL;
}

int main()
{
	xcb_connection_t *c;
	xcb_screen_t *screen;
	cairo_surface_t *surf;
	cairo_device_t *device;
	cairo_t *cr;

	/* Connect to the server */
	c = xcb_connect(NULL, NULL);
	screen = xcb_setup_roots_iterator(xcb_get_setup(c)).data;

	/* Get the cairo XCB device */
	surf = cairo_xcb_surface_create(c, screen->root,
			lookup_visual(screen, screen->root_visual),
			screen->width_in_pixels, screen->height_in_pixels);
	device = cairo_device_reference(cairo_surface_get_device(surf));
	cairo_surface_destroy(surf);

	/* Don't use RENDER */
	cairo_xcb_device_debug_cap_xrender_version(device, -1, -1);

	/* Create our surface */
	surf = cairo_xcb_surface_create(c, screen->root,
			lookup_visual(screen, screen->root_visual),
			screen->width_in_pixels, screen->height_in_pixels);

	/* Cause a fallback */
	cr = cairo_create(surf);
	cairo_set_source_rgba(cr, 1, 1, 1, 0.5);
	cairo_move_to(cr, 0, 0);
	cairo_line_to(cr, 2, 2);
	cairo_stroke(cr);

	/* Pretend we draw directly */
	cairo_surface_flush(surf);
#ifdef USE_WORKAROUND
	cairo_surface_flush(surf);
#endif
	cairo_surface_mark_dirty(surf);

	return 0;
}