backend: allow multiple backends in WLR_BACKENDS
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52bd8aa716
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007d83c6ee
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@ -1,3 +1,4 @@
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#define _POSIX_C_SOURCE 200809L
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#include <assert.h>
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#include <assert.h>
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#include <errno.h>
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#include <errno.h>
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#include <libinput.h>
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#include <libinput.h>
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@ -138,16 +139,32 @@ struct wlr_backend *wlr_backend_autocreate(struct wl_display *display) {
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return NULL;
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return NULL;
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}
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}
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const char *name = getenv("WLR_BACKEND");
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char *names = getenv("WLR_BACKENDS");
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if (name) {
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if (names) {
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struct wlr_backend *subbackend = attempt_backend_by_name(display, name);
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names = strdup(names);
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if (subbackend) {
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if (names == NULL) {
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wlr_multi_backend_add(backend, subbackend);
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wlr_log(L_ERROR, "allocation failed");
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return backend;
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return NULL;
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} else {
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}
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char *saveptr;
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char *name = strtok_r(names, ",", &saveptr);
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while (name != NULL) {
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struct wlr_backend *subbackend =
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attempt_backend_by_name(display, name);
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if (subbackend == NULL) {
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wlr_log(L_ERROR, "unrecognized backend '%s'", name);
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wlr_log(L_ERROR, "unrecognized backend '%s'", name);
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return NULL;
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return NULL;
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}
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}
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if (!wlr_multi_backend_add(backend, subbackend)) {
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return NULL;
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}
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name = strtok_r(NULL, ",", &saveptr);
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}
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return backend;
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}
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}
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if (getenv("WAYLAND_DISPLAY") || getenv("_WAYLAND_DISPLAY") ||
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if (getenv("WAYLAND_DISPLAY") || getenv("_WAYLAND_DISPLAY") ||
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@ -2,20 +2,26 @@ wlroots reads these environment variables
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wlroots specific
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wlroots specific
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----------------
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----------------
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* *WLR_DRM_DEVICES*: specifies the DRM devices (as a colon separated list) instead of auto probing them. The first existing device in this list is considered the primary DRM device.
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* *WLR_DRM_DEVICES*: specifies the DRM devices (as a colon separated list)
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* *WLR_DRM_NO_ATOMIC*: set to 1 to use legacy DRM interface instead of atomic mode setting
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instead of auto probing them. The first existing device in this list is
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considered the primary DRM device.
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* *WLR_DRM_NO_ATOMIC*: set to 1 to use legacy DRM interface instead of atomic
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mode setting
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* *WLR_LIBINPUT_NO_DEVICES*: set to 1 to not fail without any input devices
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* *WLR_LIBINPUT_NO_DEVICES*: set to 1 to not fail without any input devices
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* *WLR_BACKEND*: force a specific backend to be used (one of: wayland, x11, headless)
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* *WLR_BACKENDS*: comma-separated list of backends to use (available backends:
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wayland, x11, headless)
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* *WLR_WL_OUTPUTS*: when using the wayland backend specifies the number of outputs
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* *WLR_WL_OUTPUTS*: when using the wayland backend specifies the number of outputs
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* *WLR_X11_OUTPUTS*: when using the X11 backend specifies the number of outputs
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* *WLR_X11_OUTPUTS*: when using the X11 backend specifies the number of outputs
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rootston specific
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rootston specific
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------------------
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------------------
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* *XKB_DEFAULT_RULES*, *XKB_DEFAULT_MODEL*, *XKB_DEFAULT_LAYOUT*, *XKB_DEFAULT_VARIANT*, *XKB_DEFAULT_OPTIONS*: xkb setup
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* *XKB_DEFAULT_RULES*, *XKB_DEFAULT_MODEL*, *XKB_DEFAULT_LAYOUT*,
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*XKB_DEFAULT_VARIANT*, *XKB_DEFAULT_OPTIONS*: xkb setup
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generic
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generic
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-------
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-------
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* *DISPLAY*: if set probe X11 backend in *wlr_backend_autocreate*
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* *DISPLAY*: if set probe X11 backend in *wlr_backend_autocreate*
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* *WAYLAND_DISPLAY*, *_WAYLAND_DISPLAY*, *WAYLAND_SOCKET*: if set probe Wayland backend in *wlr_backend_autocreate*
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* *WAYLAND_DISPLAY*, *_WAYLAND_DISPLAY*, *WAYLAND_SOCKET*: if set probe Wayland
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backend in *wlr_backend_autocreate*
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* *XCURSOR_PATH*: directory where xcursors are located
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* *XCURSOR_PATH*: directory where xcursors are located
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* *XDG_RUNTIME_DIR*: used to store non persistent temporary files
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* *XDG_RUNTIME_DIR*: used to store non persistent temporary files
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