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backend: add get_present_clock

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This commit is contained in:
emersion 2018-10-01 22:44:33 +02:00
parent 9203bfdd4f
commit 54e1287f30
7 changed files with 33 additions and 6 deletions
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12
backend/drm/drm.c
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@ -1,3 +1,4 @@
#define _POSIX_C_SOURCE 199309L
#include <assert.h>
#include <drm_mode.h>
#include <EGL/egl.h>
@ -27,8 +28,8 @@
#include "util/signal.h"
bool check_drm_features(struct wlr_drm_backend *drm) {
uint64_t cap;
if (drm->parent) {
uint64_t cap;
if (drmGetCap(drm->fd, DRM_CAP_PRIME, &cap) ||
!(cap & DRM_PRIME_CAP_IMPORT)) {
wlr_log(WLR_ERROR,
@ -51,16 +52,21 @@ bool check_drm_features(struct wlr_drm_backend *drm) {
const char *no_atomic = getenv("WLR_DRM_NO_ATOMIC");
if (no_atomic && strcmp(no_atomic, "1") == 0) {
wlr_log(WLR_DEBUG, "WLR_DRM_NO_ATOMIC set, forcing legacy DRM interface");
wlr_log(WLR_DEBUG,
"WLR_DRM_NO_ATOMIC set, forcing legacy DRM interface");
drm->iface = &legacy_iface;
} else if (drmSetClientCap(drm->fd, DRM_CLIENT_CAP_ATOMIC, 1)) {
wlr_log(WLR_DEBUG, "Atomic modesetting unsupported, using legacy DRM interface");
wlr_log(WLR_DEBUG,
"Atomic modesetting unsupported, using legacy DRM interface");
drm->iface = &legacy_iface;
} else {
wlr_log(WLR_DEBUG, "Using atomic DRM interface");
drm->iface = &atomic_iface;
}
int ret = drmGetCap(drm->fd, DRM_CAP_TIMESTAMP_MONOTONIC, &cap);
drm->clock = (ret == 0 && cap == 1) ? CLOCK_MONOTONIC : CLOCK_REALTIME;
return true;
}