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backend/drm: add libliftoff interface

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This commit is contained in:
Simon Ser 2022-08-18 19:17:33 +02:00
parent b4e9487312
commit 9d43e7e4d6
11 changed files with 415 additions and 3 deletions
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32
backend/drm/drm.c
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@ -30,6 +30,11 @@
#include "render/swapchain.h"
#include "render/wlr_renderer.h"
#include "util/env.h"
#include "config.h"
#if HAVE_LIBLIFTOFF
#include <libliftoff.h>
#endif
// Output state which needs a KMS commit to be applied
static const uint32_t COMMIT_OUTPUT_STATE =
@ -76,7 +81,20 @@ bool check_drm_features(struct wlr_drm_backend *drm) {
return false;
}
if (env_parse_bool("WLR_DRM_NO_ATOMIC")) {
if (env_parse_bool("WLR_DRM_FORCE_LIBLIFTOFF")) {
#if HAVE_LIBLIFTOFF
wlr_log(WLR_INFO,
"WLR_DRM_FORCE_LIBLIFTOFF set, forcing libliftoff interface");
if (drmSetClientCap(drm->fd, DRM_CLIENT_CAP_ATOMIC, 1) != 0) {
wlr_log_errno(WLR_ERROR, "drmSetClientCap(ATOMIC) failed");
return false;
}
drm->iface = &liftoff_iface;
#else
wlr_log(WLR_ERROR, "libliftoff interface not available");
return false;
#endif
} else if (env_parse_bool("WLR_DRM_NO_ATOMIC")) {
wlr_log(WLR_DEBUG,
"WLR_DRM_NO_ATOMIC set, forcing legacy DRM interface");
drm->iface = &legacy_iface;
@ -121,6 +139,7 @@ static bool init_plane(struct wlr_drm_backend *drm,
p->type = type;
p->id = drm_plane->plane_id;
p->props = props;
p->initial_crtc_id = drm_plane->crtc_id;
for (size_t i = 0; i < drm_plane->count_formats; ++i) {
// Force a LINEAR layout for the cursor if the driver doesn't support
@ -263,6 +282,10 @@ bool init_drm_resources(struct wlr_drm_backend *drm) {
goto error_crtcs;
}
if (drm->iface->init != NULL && !drm->iface->init(drm)) {
goto error_crtcs;
}
drmModeFreeResources(res);
return true;
@ -279,6 +302,10 @@ void finish_drm_resources(struct wlr_drm_backend *drm) {
return;
}
if (drm->iface->finish != NULL) {
drm->iface->finish(drm);
}
for (size_t i = 0; i < drm->num_crtcs; ++i) {
struct wlr_drm_crtc *crtc = &drm->crtcs[i];
@ -295,6 +322,9 @@ void finish_drm_resources(struct wlr_drm_backend *drm) {
for (size_t i = 0; i < drm->num_planes; ++i) {
struct wlr_drm_plane *plane = &drm->planes[i];
wlr_drm_format_set_finish(&plane->formats);
#if HAVE_LIBLIFTOFF
liftoff_plane_destroy(plane->liftoff);
#endif
}
free(drm->planes);