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output: fail commits if adaptive sync cannot be enabled

Browse source 
Previously, adaptive sync was just a hint and wouldn't make any
atomic commit fail if the backend didn't support it. The main reason
is wlr_output_test wasn't supported at the time.

Now that we have a way for compositors to test whether a change can
work, let's remove the exception for adaptive sync and convert it to
a regular output state field.
This commit is contained in:
Simon Ser 2021-06-18 12:40:07 +02:00
parent 26e1812ab3
commit 8c70245d5f
6 changed files with 22 additions and 8 deletions
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6
backend/drm/atomic.c
View file

@ -254,8 +254,10 @@ static bool atomic_crtc_commit(struct wlr_drm_connector *conn,
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)) {
if ((state->base->committed & WLR_OUTPUT_STATE_ADAPTIVE_SYNC_ENABLED)) {
if (!drm_connector_supports_vrr(conn)) {
return false;
}
vrr_enabled = state->base->adaptive_sync_enabled;
}

9
backend/drm/drm.c
View file

@ -36,7 +36,8 @@ static const uint32_t COMMIT_OUTPUT_STATE =
WLR_OUTPUT_STATE_BUFFER |
WLR_OUTPUT_STATE_MODE |
WLR_OUTPUT_STATE_ENABLED |
WLR_OUTPUT_STATE_GAMMA_LUT;
WLR_OUTPUT_STATE_GAMMA_LUT |
WLR_OUTPUT_STATE_ADAPTIVE_SYNC_ENABLED;
static const uint32_t SUPPORTED_OUTPUT_STATE =
WLR_OUTPUT_STATE_BACKEND_OPTIONAL | COMMIT_OUTPUT_STATE;
@ -489,6 +490,12 @@ static bool drm_connector_test(struct wlr_output *output,
}
}
if ((state->committed & WLR_OUTPUT_ADAPTIVE_SYNC_ENABLED) &&
state->adaptive_sync_enabled &&
!drm_connector_supports_vrr(conn)) {
return false;
}
struct wlr_drm_connector_state pending = {0};
drm_connector_state_init(&pending, conn, state);

6
backend/drm/legacy.c
View file

@ -115,8 +115,10 @@ static bool legacy_crtc_commit(struct wlr_drm_connector *conn,
}
}
if ((state->base->committed & WLR_OUTPUT_STATE_ADAPTIVE_SYNC_ENABLED) &&
drm_connector_supports_vrr(conn)) {
if (state->base->committed & WLR_OUTPUT_STATE_ADAPTIVE_SYNC_ENABLED) {
if (!drm_connector_supports_vrr(conn)) {
return false;
}
if (drmModeObjectSetProperty(drm->fd, crtc->id, DRM_MODE_OBJECT_CRTC,
crtc->props.vrr_enabled,
state->base->adaptive_sync_enabled) != 0) {

3
backend/x11/output.c
View file

@ -26,7 +26,8 @@
static const uint32_t SUPPORTED_OUTPUT_STATE =
WLR_OUTPUT_STATE_BACKEND_OPTIONAL |
WLR_OUTPUT_STATE_BUFFER |
WLR_OUTPUT_STATE_MODE;
WLR_OUTPUT_STATE_MODE |
WLR_OUTPUT_STATE_ADAPTIVE_SYNC_ENABLED;
static void parse_xcb_setup(struct wlr_output *output,
xcb_connection_t *xcb) {

1
include/wlr/interfaces/wlr_output.h
View file

@ -22,7 +22,6 @@
WLR_OUTPUT_STATE_SCALE | \
WLR_OUTPUT_STATE_TRANSFORM | \
WLR_OUTPUT_STATE_RENDER_FORMAT | \
WLR_OUTPUT_STATE_ADAPTIVE_SYNC_ENABLED | \
WLR_OUTPUT_STATE_SUBPIXEL)
/**

5
include/wlr/types/wlr_output.h
View file

@ -301,7 +301,10 @@ void wlr_output_set_transform(struct wlr_output *output,
enum wl_output_transform transform);
/**
* Enables or disables adaptive sync (ie. variable refresh rate) on this
* output. This is just a hint, the backend is free to ignore this setting.
* output. On some backends, this is just a hint and may be ignored.
* Compositors can inspect `wlr_output.adaptive_sync_status` to query the
* effective status. Backends that don't support adaptive sync will reject
* the output commit.
*
* When enabled, compositors can submit frames a little bit later than the
* deadline without dropping a frame.