This forces weston to create one output for every parent output.  This is
enabled by default if it detects a wl_fullscreen_shell.  The --sprawl
option is primarily to enable this on wl_shell.

Signed-off-by: Jason Ekstrand <[email protected]>
---
 src/compositor-wayland.c | 10 +++++++---
 src/compositor.c         |  1 +
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/src/compositor-wayland.c b/src/compositor-wayland.c
index a5d4a7f..f1b4526 100644
--- a/src/compositor-wayland.c
+++ b/src/compositor-wayland.c
@@ -64,6 +64,7 @@ struct wayland_compositor {
        } parent;
 
        int use_pixman;
+       int sprawl_across_outputs;
 
        struct theme *theme;
        cairo_device_t *frame_device;
@@ -1713,7 +1714,7 @@ wayland_compositor_register_output(struct 
wayland_compositor *c, uint32_t id)
        wl_list_init(&output->mode_list);
        wl_list_insert(&c->parent.output_list, &output->link);
 
-       if (c->parent.fshell) {
+       if (c->sprawl_across_outputs) {
                wl_display_roundtrip(c->parent.wl_display);
                wayland_output_create_for_parent_output(c, output);
        }
@@ -1998,7 +1999,7 @@ backend_init(struct wl_display *display, int *argc, char 
*argv[],
        struct wayland_output *output;
        struct wayland_parent_output *poutput;
        struct weston_config_section *section;
-       int x, count, width, height, scale, use_pixman, fullscreen;
+       int x, count, width, height, scale, use_pixman, fullscreen, sprawl;
        const char *section_name, *display_name;
        char *name;
 
@@ -2010,6 +2011,7 @@ backend_init(struct wl_display *display, int *argc, char 
*argv[],
                { WESTON_OPTION_BOOLEAN, "use-pixman", 0, &use_pixman },
                { WESTON_OPTION_INTEGER, "output-count", 0, &count },
                { WESTON_OPTION_BOOLEAN, "fullscreen", 0, &fullscreen },
+               { WESTON_OPTION_BOOLEAN, "sprawl", 0, &sprawl },
        };
 
        width = 0;
@@ -2019,6 +2021,7 @@ backend_init(struct wl_display *display, int *argc, char 
*argv[],
        use_pixman = 0;
        count = 1;
        fullscreen = 0;
+       sprawl = 0;
        parse_options(wayland_options,
                      ARRAY_LENGTH(wayland_options), argc, argv);
 
@@ -2027,7 +2030,8 @@ backend_init(struct wl_display *display, int *argc, char 
*argv[],
        if (!c)
                return NULL;
        
-       if (c->parent.fshell) {
+       if (sprawl || c->parent.fshell) {
+               c->sprawl_across_outputs = 1;
                wl_display_roundtrip(c->parent.wl_display);
 
                wl_list_for_each(poutput, &c->parent.output_list, link)
diff --git a/src/compositor.c b/src/compositor.c
index 5405faa..6b90bd8 100644
--- a/src/compositor.c
+++ b/src/compositor.c
@@ -4036,6 +4036,7 @@ usage(int error_code)
                "  --fullscreen\t\tRun in fullscreen mode\n"
                "  --use-pixman\t\tUse the pixman (CPU) renderer\n"
                "  --output-count=COUNT\tCreate multiple outputs\n"
+               "  --sprawl\t\tCreate one fullscreen output for every parent 
output\n"
                "  --display=DISPLAY\tWayland display to connect to\n\n");
 
 #if defined(BUILD_RPI_COMPOSITOR) && defined(HAVE_BCM_HOST)
-- 
1.9.0

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