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backend: add get_drm_fd to interface

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This function allows backends to return the DRM FD they are using. This
will allow the allocator and the renderer to use the right device.
This commit is contained in:
Simon Ser 2020-12-01 16:00:12 +01:00
parent 87293d1b15
commit a53ab146fe
3 changed files with 17 additions and 0 deletions
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8
backend/backend.c
View file

@ -16,6 +16,7 @@
#include <wlr/backend/wayland.h>
#include <wlr/config.h>
#include <wlr/util/log.h>
#include "backend/backend.h"
#include "backend/multi.h"
#if WLR_HAS_X11_BACKEND
@ -71,6 +72,13 @@ clockid_t wlr_backend_get_presentation_clock(struct wlr_backend *backend) {
return CLOCK_MONOTONIC;
}
int backend_get_drm_fd(struct wlr_backend *backend) {
if (!backend->impl->get_drm_fd) {
return -1;
}
return backend->impl->get_drm_fd(backend);
}
static size_t parse_outputs_env(const char *name) {
const char *outputs_str = getenv(name);
if (outputs_str == NULL) {

8
include/backend/backend.h Normal file
View file

@ -0,0 +1,8 @@
#ifndef BACKEND_H
#define BACKEND_H
#include <wlr/backend.h>
int backend_get_drm_fd(struct wlr_backend *backend);
#endif

1
include/wlr/backend/interface.h
View file

@ -19,6 +19,7 @@ struct wlr_backend_impl {
struct wlr_renderer *(*get_renderer)(struct wlr_backend *backend);
struct wlr_session *(*get_session)(struct wlr_backend *backend);
clockid_t (*get_presentation_clock)(struct wlr_backend *backend);
int (*get_drm_fd)(struct wlr_backend *backend);
};
/**