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kms: Allow passing framebuffer damage metadata

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This commit adds support to atomic KMS backend for optional plane property
prop_fb_damage_clips. Some drivers (e.g. EVDI) take advantage of this
property and process only updated regions of the screen instead of
processing the full frame. This can save system resources.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1879>
This commit is contained in:
Piotr Lopatka
2021-09-03 19:39:12 +01:00
parent 7555688d8d
commit af0460d0ce
6 changed files with 80 additions and 0 deletions
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28
src/backends/native/meta-kms-impl-device-atomic.c
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@ -416,6 +416,8 @@ process_plane_assignment (MetaKmsImplDevice *impl_device,
MetaKmsPlaneAssignment *plane_assignment = update_entry;
MetaKmsPlane *plane = plane_assignment->plane;
MetaDrmBuffer *buffer;
MetaKmsFbDamage *fb_damage;
uint32_t prop_id;
buffer = plane_assignment->buffer;
@ -539,6 +541,32 @@ process_plane_assignment (MetaKmsImplDevice *impl_device,
return FALSE;
}
fb_damage = plane_assignment->fb_damage;
if (fb_damage &&
meta_kms_plane_get_prop_id (plane,
META_KMS_PLANE_PROP_FB_DAMAGE_CLIPS_ID))
{
meta_topic (META_DEBUG_KMS,
"[atomic] Setting %d damage clips on %u",
fb_damage->n_rects,
meta_kms_plane_get_id (plane));
prop_id = store_new_blob (impl_device,
blob_ids,
fb_damage->rects,
fb_damage->n_rects *
sizeof (struct drm_mode_rect),
error);
if (!prop_id)
return FALSE;
if (!add_plane_property (impl_device,
plane, req,
META_KMS_PLANE_PROP_FB_DAMAGE_CLIPS_ID,
prop_id,
error))
return FALSE;
}
return TRUE;
}