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Support multiple wl backend outputs

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This commit is contained in:
Drew DeVault 2017-06-20 18:22:21 -04:00
parent b2bf5b23b9
commit c2d0090ad7
5 changed files with 86 additions and 46 deletions
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44
backend/backend.c
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@ -39,13 +39,39 @@ void wlr_backend_destroy(struct wlr_backend *backend) {
free(backend);
}
static struct wlr_backend *attempt_wl_backend(struct wl_display *display) {
struct wlr_backend *backend = wlr_wl_backend_create(display);
if (backend) {
int outputs = 1;
const char *_outputs = getenv("WLR_WL_OUTPUTS");
if (_outputs) {
char *end;
outputs = (int)strtol(_outputs, &end, 10);
if (*end) {
wlr_log(L_ERROR, "WLR_WL_OUTPUTS specified with invalid integer, ignoring");
outputs = 1;
} else if (outputs < 0) {
wlr_log(L_ERROR, "WLR_WL_OUTPUTS specified with negative outputs, ignoring");
outputs = 1;
}
}
while (outputs--) {
wlr_wl_output_create(backend);
}
}
return backend;
}
struct wlr_backend *wlr_backend_autocreate(struct wl_display *display,
struct wlr_session *session) {
// TODO: Choose the most appropriate backend for the situation
// Attempt DRM+libinput
struct wlr_backend *backend;
if (getenv("WAYLAND_DISPLAY") || getenv("_WAYLAND_DISPLAY")) {
return wlr_wl_backend_create(display, 1);
backend = attempt_wl_backend(display);
if (backend) {
return backend;
}
}
// Attempt DRM+libinput
struct wlr_udev *udev;
if (!(udev = wlr_udev_create(display))) {
wlr_log(L_ERROR, "Failed to start udev");
@ -56,8 +82,8 @@ struct wlr_backend *wlr_backend_autocreate(struct wl_display *display,
wlr_log(L_ERROR, "Failed to open DRM device");
goto error_udev;
}
struct wlr_backend *multi = wlr_multi_backend_create();
if (!multi) {
backend = wlr_multi_backend_create();
if (!backend) {
goto error_gpu;
}
struct wlr_backend *libinput =
@ -70,13 +96,13 @@ struct wlr_backend *wlr_backend_autocreate(struct wl_display *display,
if (!drm) {
goto error_libinput;
}
wlr_multi_backend_add(multi, libinput);
wlr_multi_backend_add(multi, drm);
return multi;
wlr_multi_backend_add(backend, libinput);
wlr_multi_backend_add(backend, drm);
return backend;
error_libinput:
wlr_backend_destroy(libinput);
error_multi:
wlr_backend_destroy(multi);
wlr_backend_destroy(backend);
error_gpu:
close(gpu);
error_udev: