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backend/drm: track pending atomic state in wlr_drm_connector_state

Browse source 
This centralizes logic common for both the atomic and libliftoff
backends. Additionally, a struct will make it easier to implement
multi-connector commits (since it can be stored in an array).
This commit is contained in:
Simon Ser 2024-02-14 15:41:29 +01:00 committed by Kenny Levinsen
parent d7d974ae30
commit 4636f8c407
6 changed files with 116 additions and 146 deletions
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147
backend/drm/atomic.c
View file

@ -101,7 +101,7 @@ static void atomic_add(struct atomic *atom, uint32_t id, uint32_t prop, uint64_t
}
}
bool create_mode_blob(struct wlr_drm_connector *conn,
static bool create_mode_blob(struct wlr_drm_connector *conn,
const struct wlr_drm_connector_state *state, uint32_t *blob_id) {
if (!state->active) {
*blob_id = 0;
@ -117,7 +117,7 @@ bool create_mode_blob(struct wlr_drm_connector *conn,
return true;
}
bool create_gamma_lut_blob(struct wlr_drm_backend *drm,
static bool create_gamma_lut_blob(struct wlr_drm_backend *drm,
size_t size, const uint16_t *lut, uint32_t *blob_id) {
if (size == 0) {
*blob_id = 0;
@ -233,51 +233,12 @@ static void rollback_blob(struct wlr_drm_backend *drm,
destroy_blob(drm, next);
}
static void plane_disable(struct atomic *atom, struct wlr_drm_plane *plane) {
uint32_t id = plane->id;
const union wlr_drm_plane_props *props = &plane->props;
atomic_add(atom, id, props->fb_id, 0);
atomic_add(atom, id, props->crtc_id, 0);
}
static void set_plane_props(struct atomic *atom, struct wlr_drm_backend *drm,
struct wlr_drm_plane *plane, struct wlr_drm_fb *fb, uint32_t crtc_id,
int32_t x, int32_t y) {
uint32_t id = plane->id;
const union wlr_drm_plane_props *props = &plane->props;
if (fb == NULL) {
wlr_log(WLR_ERROR, "Failed to acquire FB for plane %"PRIu32, plane->id);
atom->failed = true;
return;
}
uint32_t width = fb->wlr_buf->width;
uint32_t height = fb->wlr_buf->height;
// The src_* properties are in 16.16 fixed point
atomic_add(atom, id, props->src_x, 0);
atomic_add(atom, id, props->src_y, 0);
atomic_add(atom, id, props->src_w, (uint64_t)width << 16);
atomic_add(atom, id, props->src_h, (uint64_t)height << 16);
atomic_add(atom, id, props->crtc_w, width);
atomic_add(atom, id, props->crtc_h, height);
atomic_add(atom, id, props->fb_id, fb->id);
atomic_add(atom, id, props->crtc_id, crtc_id);
atomic_add(atom, id, props->crtc_x, (uint64_t)x);
atomic_add(atom, id, props->crtc_y, (uint64_t)y);
}
static bool atomic_crtc_commit(struct wlr_drm_connector *conn,
const struct wlr_drm_connector_state *state,
struct wlr_drm_page_flip *page_flip, uint32_t flags, bool test_only) {
bool drm_atomic_connector_prepare(struct wlr_drm_connector_state *state, bool modeset) {
struct wlr_drm_connector *conn = state->connector;
struct wlr_drm_backend *drm = conn->backend;
struct wlr_output *output = &conn->output;
struct wlr_drm_crtc *crtc = conn->crtc;
bool modeset = state->modeset;
bool active = state->active;
uint32_t mode_id = crtc->mode_id;
if (modeset) {
if (!create_mode_blob(conn, state, &mode_id)) {
@ -321,6 +282,87 @@ static bool atomic_crtc_commit(struct wlr_drm_connector *conn,
vrr_enabled = state->base->adaptive_sync_enabled;
}
state->mode_id = mode_id;
state->gamma_lut = gamma_lut;
state->fb_damage_clips = fb_damage_clips;
state->vrr_enabled = vrr_enabled;
return true;
}
void drm_atomic_connector_apply_commit(struct wlr_drm_connector_state *state) {
struct wlr_drm_connector *conn = state->connector;
struct wlr_drm_crtc *crtc = conn->crtc;
struct wlr_drm_backend *drm = conn->backend;
if (!crtc->own_mode_id) {
crtc->mode_id = 0; // don't try to delete previous master's blobs
}
crtc->own_mode_id = true;
commit_blob(drm, &crtc->mode_id, state->mode_id);
commit_blob(drm, &crtc->gamma_lut, state->gamma_lut);
destroy_blob(drm, state->fb_damage_clips);
}
void drm_atomic_connector_rollback_commit(struct wlr_drm_connector_state *state) {
struct wlr_drm_connector *conn = state->connector;
struct wlr_drm_crtc *crtc = conn->crtc;
struct wlr_drm_backend *drm = conn->backend;
rollback_blob(drm, &crtc->mode_id, state->mode_id);
rollback_blob(drm, &crtc->gamma_lut, state->gamma_lut);
destroy_blob(drm, state->fb_damage_clips);
}
static void plane_disable(struct atomic *atom, struct wlr_drm_plane *plane) {
uint32_t id = plane->id;
const union wlr_drm_plane_props *props = &plane->props;
atomic_add(atom, id, props->fb_id, 0);
atomic_add(atom, id, props->crtc_id, 0);
}
static void set_plane_props(struct atomic *atom, struct wlr_drm_backend *drm,
struct wlr_drm_plane *plane, struct wlr_drm_fb *fb, uint32_t crtc_id,
int32_t x, int32_t y) {
uint32_t id = plane->id;
const union wlr_drm_plane_props *props = &plane->props;
if (fb == NULL) {
wlr_log(WLR_ERROR, "Failed to acquire FB for plane %"PRIu32, plane->id);
atom->failed = true;
return;
}
uint32_t width = fb->wlr_buf->width;
uint32_t height = fb->wlr_buf->height;
// The src_* properties are in 16.16 fixed point
atomic_add(atom, id, props->src_x, 0);
atomic_add(atom, id, props->src_y, 0);
atomic_add(atom, id, props->src_w, (uint64_t)width << 16);
atomic_add(atom, id, props->src_h, (uint64_t)height << 16);
atomic_add(atom, id, props->crtc_w, width);
atomic_add(atom, id, props->crtc_h, height);
atomic_add(atom, id, props->fb_id, fb->id);
atomic_add(atom, id, props->crtc_id, crtc_id);
atomic_add(atom, id, props->crtc_x, (uint64_t)x);
atomic_add(atom, id, props->crtc_y, (uint64_t)y);
}
static bool atomic_crtc_commit(struct wlr_drm_connector *conn,
struct wlr_drm_connector_state *state,
struct wlr_drm_page_flip *page_flip, uint32_t flags, bool test_only) {
struct wlr_drm_backend *drm = conn->backend;
struct wlr_drm_crtc *crtc = conn->crtc;
bool modeset = state->modeset;
bool active = state->active;
if (!drm_atomic_connector_prepare(state, modeset)) {
return false;
}
if (test_only) {
flags |= DRM_MODE_ATOMIC_TEST_ONLY;
}
@ -345,20 +387,20 @@ static bool atomic_crtc_commit(struct wlr_drm_connector *conn,
if (modeset && active && conn->props.max_bpc != 0 && conn->max_bpc_bounds[1] != 0) {
atomic_add(&atom, conn->id, conn->props.max_bpc, pick_max_bpc(conn, state->primary_fb));
}
atomic_add(&atom, crtc->id, crtc->props.mode_id, mode_id);
atomic_add(&atom, crtc->id, crtc->props.mode_id, state->mode_id);
atomic_add(&atom, crtc->id, crtc->props.active, active);
if (active) {
if (crtc->props.gamma_lut != 0) {
atomic_add(&atom, crtc->id, crtc->props.gamma_lut, gamma_lut);
atomic_add(&atom, crtc->id, crtc->props.gamma_lut, state->gamma_lut);
}
if (crtc->props.vrr_enabled != 0) {
atomic_add(&atom, crtc->id, crtc->props.vrr_enabled, vrr_enabled);
atomic_add(&atom, crtc->id, crtc->props.vrr_enabled, state->vrr_enabled);
}
set_plane_props(&atom, drm, crtc->primary, state->primary_fb, crtc->id,
0, 0);
if (crtc->primary->props.fb_damage_clips != 0) {
atomic_add(&atom, crtc->primary->id,
crtc->primary->props.fb_damage_clips, fb_damage_clips);
crtc->primary->props.fb_damage_clips, state->fb_damage_clips);
}
if (crtc->cursor) {
if (drm_connector_is_cursor_visible(conn)) {
@ -379,17 +421,10 @@ static bool atomic_crtc_commit(struct wlr_drm_connector *conn,
atomic_finish(&atom);
if (ok && !test_only) {
if (!crtc->own_mode_id) {
crtc->mode_id = 0; // don't try to delete previous master's blobs
}
crtc->own_mode_id = true;
commit_blob(drm, &crtc->mode_id, mode_id);
commit_blob(drm, &crtc->gamma_lut, gamma_lut);
drm_atomic_connector_apply_commit(state);
} else {
rollback_blob(drm, &crtc->mode_id, mode_id);
rollback_blob(drm, &crtc->gamma_lut, gamma_lut);
drm_atomic_connector_rollback_commit(state);
}
destroy_blob(drm, fb_damage_clips);
return ok;
}

2
backend/drm/drm.c
View file

@ -489,7 +489,7 @@ static void drm_connector_rollback_commit(const struct wlr_drm_connector_state *
}
static bool drm_crtc_commit(struct wlr_drm_connector *conn,
const struct wlr_drm_connector_state *state,
struct wlr_drm_connector_state *state,
uint32_t flags, bool test_only) {
// Disallow atomic-only flags
assert((flags & ~DRM_MODE_PAGE_FLIP_FLAGS) == 0);

2
backend/drm/legacy.c
View file

@ -59,7 +59,7 @@ static bool legacy_crtc_test(struct wlr_drm_connector *conn,
}
static bool legacy_crtc_commit(struct wlr_drm_connector *conn,
const struct wlr_drm_connector_state *state,
struct wlr_drm_connector_state *state,
struct wlr_drm_page_flip *page_flip, uint32_t flags, bool test_only) {
if (!legacy_crtc_test(conn, state)) {
return false;

94
backend/drm/libliftoff.c
View file

@ -126,27 +126,6 @@ static bool add_prop(drmModeAtomicReq *req, uint32_t obj,
return true;
}
static void commit_blob(struct wlr_drm_backend *drm,
uint32_t *current, uint32_t next) {
if (*current == next) {
return;
}
if (*current != 0) {
drmModeDestroyPropertyBlob(drm->fd, *current);
}
*current = next;
}
static void rollback_blob(struct wlr_drm_backend *drm,
uint32_t *current, uint32_t next) {
if (*current == next) {
return;
}
if (next != 0) {
drmModeDestroyPropertyBlob(drm->fd, next);
}
}
static bool set_plane_props(struct wlr_drm_plane *plane,
struct liftoff_layer *layer, struct wlr_drm_fb *fb, int32_t x, int32_t y, uint64_t zpos) {
if (fb == NULL) {
@ -301,10 +280,9 @@ static void update_layer_feedback(struct wlr_drm_backend *drm,
}
static bool crtc_commit(struct wlr_drm_connector *conn,
const struct wlr_drm_connector_state *state,
struct wlr_drm_connector_state *state,
struct wlr_drm_page_flip *page_flip, uint32_t flags, bool test_only) {
struct wlr_drm_backend *drm = conn->backend;
struct wlr_output *output = &conn->output;
struct wlr_drm_crtc *crtc = conn->crtc;
bool modeset = state->modeset;
@ -314,53 +292,8 @@ static bool crtc_commit(struct wlr_drm_connector *conn,
return false;
}
uint32_t mode_id = crtc->mode_id;
if (modeset) {
if (!create_mode_blob(conn, state, &mode_id)) {
return false;
}
}
uint32_t gamma_lut = crtc->gamma_lut;
if (state->base->committed & WLR_OUTPUT_STATE_GAMMA_LUT) {
// Fallback to legacy gamma interface when gamma properties are not
// available (can happen on older Intel GPUs that support gamma but not
// degamma).
if (crtc->props.gamma_lut == 0) {
if (!drm_legacy_crtc_set_gamma(drm, crtc,
state->base->gamma_lut_size,
state->base->gamma_lut)) {
return false;
}
} else {
if (!create_gamma_lut_blob(drm, state->base->gamma_lut_size,
state->base->gamma_lut, &gamma_lut)) {
return false;
}
}
}
struct wl_array fb_damage_clips_arr = {0};
uint32_t primary_fb_damage_clips = 0;
if ((state->base->committed & WLR_OUTPUT_STATE_DAMAGE) &&
crtc->primary->props.fb_damage_clips != 0) {
uint32_t *ptr = wl_array_add(&fb_damage_clips_arr, sizeof(primary_fb_damage_clips));
if (ptr == NULL) {
return false;
}
create_fb_damage_clips_blob(drm, state->primary_fb->wlr_buf->width,
state->primary_fb->wlr_buf->height, &state->base->damage,
&primary_fb_damage_clips);
*ptr = primary_fb_damage_clips;
}
bool prev_vrr_enabled =
output->adaptive_sync_status == WLR_OUTPUT_ADAPTIVE_SYNC_ENABLED;
bool vrr_enabled = prev_vrr_enabled;
if ((state->base->committed & WLR_OUTPUT_STATE_ADAPTIVE_SYNC_ENABLED) &&
drm_connector_supports_vrr(conn)) {
vrr_enabled = state->base->adaptive_sync_enabled;
if (!drm_atomic_connector_prepare(state, modeset)) {
return false;
}
if (test_only) {
@ -373,6 +306,7 @@ static bool crtc_commit(struct wlr_drm_connector *conn,
flags |= DRM_MODE_ATOMIC_NONBLOCK;
}
struct wl_array fb_damage_clips_arr = {0};
drmModeAtomicReq *req = drmModeAtomicAlloc();
if (req == NULL) {
wlr_log(WLR_ERROR, "drmModeAtomicAlloc failed");
@ -391,22 +325,22 @@ static bool crtc_commit(struct wlr_drm_connector *conn,
}
// TODO: set "max bpc"
ok = ok &&
add_prop(req, crtc->id, crtc->props.mode_id, mode_id) &&
add_prop(req, crtc->id, crtc->props.mode_id, state->mode_id) &&
add_prop(req, crtc->id, crtc->props.active, active);
if (active) {
if (crtc->props.gamma_lut != 0) {
ok = ok && add_prop(req, crtc->id, crtc->props.gamma_lut, gamma_lut);
ok = ok && add_prop(req, crtc->id, crtc->props.gamma_lut, state->gamma_lut);
}
if (crtc->props.vrr_enabled != 0) {
ok = ok && add_prop(req, crtc->id, crtc->props.vrr_enabled, vrr_enabled);
ok = ok && add_prop(req, crtc->id, crtc->props.vrr_enabled, state->vrr_enabled);
}
ok = ok &&
set_plane_props(crtc->primary, crtc->primary->liftoff_layer, state->primary_fb, 0, 0, 0) &&
set_plane_props(crtc->primary, crtc->liftoff_composition_layer, state->primary_fb, 0, 0, 0);
liftoff_layer_set_property(crtc->primary->liftoff_layer,
"FB_DAMAGE_CLIPS", primary_fb_damage_clips);
"FB_DAMAGE_CLIPS", state->fb_damage_clips);
liftoff_layer_set_property(crtc->liftoff_composition_layer,
"FB_DAMAGE_CLIPS", primary_fb_damage_clips);
"FB_DAMAGE_CLIPS", state->fb_damage_clips);
if (state->base->committed & WLR_OUTPUT_STATE_LAYERS) {
for (size_t i = 0; i < state->base->layers_len; i++) {
@ -475,15 +409,9 @@ out:
drmModeAtomicFree(req);
if (ok && !test_only) {
if (!crtc->own_mode_id) {
crtc->mode_id = 0; // don't try to delete previous master's blobs
}
crtc->own_mode_id = true;
commit_blob(drm, &crtc->mode_id, mode_id);
commit_blob(drm, &crtc->gamma_lut, gamma_lut);
drm_atomic_connector_apply_commit(state);
} else {
rollback_blob(drm, &crtc->mode_id, mode_id);
rollback_blob(drm, &crtc->gamma_lut, gamma_lut);
drm_atomic_connector_rollback_commit(state);
}
uint32_t *fb_damage_clips_ptr;

6
include/backend/drm/drm.h
View file

@ -131,6 +131,12 @@ struct wlr_drm_connector_state {
drmModeModeInfo mode;
struct wlr_drm_fb *primary_fb;
struct wlr_drm_fb *cursor_fb;
// used by atomic
uint32_t mode_id;
uint32_t gamma_lut;
uint32_t fb_damage_clips;
bool vrr_enabled;
};
/**

11
include/backend/drm/iface.h
View file

@ -20,7 +20,7 @@ struct wlr_drm_interface {
void (*finish)(struct wlr_drm_backend *drm);
// Commit all pending changes on a CRTC.
bool (*crtc_commit)(struct wlr_drm_connector *conn,
const struct wlr_drm_connector_state *state,
struct wlr_drm_connector_state *state,
struct wlr_drm_page_flip *page_flip, uint32_t flags, bool test_only);
// Turn off everything
bool (*reset)(struct wlr_drm_backend *drm);
@ -33,12 +33,13 @@ extern const struct wlr_drm_interface liftoff_iface;
bool drm_legacy_crtc_set_gamma(struct wlr_drm_backend *drm,
struct wlr_drm_crtc *crtc, size_t size, uint16_t *lut);
bool create_mode_blob(struct wlr_drm_connector *conn,
const struct wlr_drm_connector_state *state, uint32_t *blob_id);
bool create_gamma_lut_blob(struct wlr_drm_backend *drm,
size_t size, const uint16_t *lut, uint32_t *blob_id);
bool create_fb_damage_clips_blob(struct wlr_drm_backend *drm,
int width, int height, const pixman_region32_t *damage, uint32_t *blob_id);
bool drm_atomic_reset(struct wlr_drm_backend *drm);
bool drm_atomic_connector_prepare(struct wlr_drm_connector_state *state,
bool modeset);
void drm_atomic_connector_apply_commit(struct wlr_drm_connector_state *state);
void drm_atomic_connector_rollback_commit(struct wlr_drm_connector_state *state);
#endif