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kms/crtc: Don't report predicted gamma changes

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We started to report resource changes using prediction when an update
had been successfully committed. While at it, gamma changes were
reported too, but this was problematic, as gsd-color will listen for the
MonitorsChanged D-Bus signal and naively set the gamma again, even if it
didn't change. There aren't currently any actual use cases for being
told when gamma changes from a prediction, so just ignore it and just
report privacy screen changes.

This avoids a feedback loop between mutter and gsd-color.

Fixes: 81b28a1d97
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2531>
This commit is contained in:
Jonas Ådahl 2022-07-26 11:02:32 +02:00
parent d928b6baa6
commit d985069542
3 changed files with 4 additions and 13 deletions
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4
src/backends/native/meta-kms-crtc-private.h
View File

@ -42,8 +42,8 @@ MetaKmsResourceChanges meta_kms_crtc_update_state (MetaKmsCrtc *crtc);
void meta_kms_crtc_disable (MetaKmsCrtc *crtc);
MetaKmsResourceChanges meta_kms_crtc_predict_state (MetaKmsCrtc *crtc,
MetaKmsUpdate *update);
void meta_kms_crtc_predict_state (MetaKmsCrtc *crtc,
MetaKmsUpdate *update);
uint32_t meta_kms_crtc_get_prop_id (MetaKmsCrtc *crtc,
MetaKmsCrtcProp prop);

6
src/backends/native/meta-kms-crtc.c
View File

@ -278,14 +278,13 @@ meta_kms_crtc_disable (MetaKmsCrtc *crtc)
crtc->current_state.drm_mode = (drmModeModeInfo) { 0 };
}
MetaKmsResourceChanges
void
meta_kms_crtc_predict_state (MetaKmsCrtc *crtc,
MetaKmsUpdate *update)
{
GList *mode_sets;
GList *crtc_gammas;
GList *l;
MetaKmsResourceChanges changes = META_KMS_RESOURCE_CHANGE_NONE;
mode_sets = meta_kms_update_get_mode_sets (update);
for (l = mode_sets; l; l = l->next)
@ -338,11 +337,8 @@ meta_kms_crtc_predict_state (MetaKmsCrtc *crtc,
crtc->current_state.gamma.blue =
g_memdup2 (gamma->blue, gamma->size * sizeof (uint16_t));
changes |= META_KMS_RESOURCE_CHANGE_GAMMA;
break;
}
return changes;
}
static void

7
src/backends/native/meta-kms-impl-device.c
View File

@ -923,12 +923,7 @@ meta_kms_impl_device_predict_states (MetaKmsImplDevice *impl_device,
MetaKmsResourceChanges changes = META_KMS_RESOURCE_CHANGE_NONE;
GList *l;
for (l = priv->crtcs; l; l = l->next)
{
MetaKmsCrtc *crtc = l->data;
changes |= meta_kms_crtc_predict_state (crtc, update);
}
g_list_foreach (priv->crtcs, (GFunc) meta_kms_crtc_predict_state, update);
for (l = priv->connectors; l; l = l->next)
{