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Introduce noop backend

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The noop backend is similar to headless, but it doesn't contain a
renderer. It can be used as a place to stash views for when there's no
physical outputs connected.
This commit is contained in:
Ryan Dwyer 2019-01-17 20:13:55 +10:00
parent 10b1de6e71
commit 9b4be5a595
7 changed files with 218 additions and 1 deletions
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17
backend/backend.c
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@ -11,6 +11,7 @@
#include <wlr/backend/interface.h>
#include <wlr/backend/libinput.h>
#include <wlr/backend/multi.h>
#include <wlr/backend/noop.h>
#include <wlr/backend/session.h>
#include <wlr/backend/wayland.h>
#include <wlr/config.h>
@ -133,6 +134,20 @@ static struct wlr_backend *attempt_headless_backend(
return backend;
}
static struct wlr_backend *attempt_noop_backend(struct wl_display *display) {
struct wlr_backend *backend = wlr_noop_backend_create(display);
if (backend == NULL) {
return NULL;
}
size_t outputs = parse_outputs_env("WLR_NOOP_OUTPUTS");
for (size_t i = 0; i < outputs; ++i) {
wlr_noop_add_output(backend);
}
return backend;
}
static struct wlr_backend *attempt_drm_backend(struct wl_display *display,
struct wlr_backend *backend, struct wlr_session *session,
wlr_renderer_create_func_t create_renderer_func) {
@ -170,6 +185,8 @@ static struct wlr_backend *attempt_backend_by_name(struct wl_display *display,
#endif
} else if (strcmp(name, "headless") == 0) {
return attempt_headless_backend(display, create_renderer_func);
} else if (strcmp(name, "noop") == 0) {
return attempt_noop_backend(display);
} else if (strcmp(name, "drm") == 0 || strcmp(name, "libinput") == 0) {
// DRM and libinput need a session
if (!*session) {