The plane property FB_DAMAGE_CLIPS provides a way mark damaged regions on the plane in framebuffer coordinates of the framebuffer attached to the plane.
This patch adds a new member "damage" to compositor version of drm_plane_state and set FB_DAMAGE_CLIPS property whenever damage is available.
Signed-off-by: Deepak Rawat drawat@vmware.com Cc: dri-devel@lists.freedesktop.org --- libweston/compositor-drm.c | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+)
diff --git a/libweston/compositor-drm.c b/libweston/compositor-drm.c index 6a87a296..30f6fce9 100644 --- a/libweston/compositor-drm.c +++ b/libweston/compositor-drm.c @@ -129,6 +129,7 @@ enum wdrm_plane_property { WDRM_PLANE_FB_ID, WDRM_PLANE_CRTC_ID, WDRM_PLANE_IN_FORMATS, + WDRM_PLANE_FB_DAMAGE_CLIPS, WDRM_PLANE__COUNT };
@@ -171,6 +172,7 @@ static const struct drm_property_info plane_props[] = { [WDRM_PLANE_FB_ID] = { .name = "FB_ID", }, [WDRM_PLANE_CRTC_ID] = { .name = "CRTC_ID", }, [WDRM_PLANE_IN_FORMATS] = { .name = "IN_FORMATS" }, + [WDRM_PLANE_FB_DAMAGE_CLIPS] = { .name = "FB_DAMAGE_CLIPS" }, };
/** @@ -403,6 +405,8 @@ struct drm_plane_state {
bool complete;
+ pixman_region32_t damage; /* damage sent to kernel */ + struct wl_list link; /* drm_output_state::plane_list */ };
@@ -1306,6 +1310,7 @@ drm_plane_state_alloc(struct drm_output_state *state_output, assert(state); state->output_state = state_output; state->plane = plane; + pixman_region32_init(&state->damage);
/* Here we only add the plane state to the desired link, and not * set the member. Having an output pointer set means that the @@ -1336,6 +1341,7 @@ drm_plane_state_free(struct drm_plane_state *state, bool force) wl_list_remove(&state->link); wl_list_init(&state->link); state->output_state = NULL; + pixman_region32_fini(&state->damage);
if (force || state != state->plane->state_cur) { drm_fb_unref(state->fb); @@ -1373,6 +1379,7 @@ drm_plane_state_duplicate(struct drm_output_state *state_output, if (src->fb) dst->fb = drm_fb_ref(src->fb); dst->output_state = state_output; + pixman_region32_init(&dst->damage); dst->complete = false;
return dst; @@ -2409,6 +2416,33 @@ drm_mode_ensure_blob(struct drm_backend *backend, struct drm_mode *mode) return ret; }
+static int +plane_add_damage(drmModeAtomicReq *req, struct drm_backend *backend, + struct drm_plane_state *plane_state) +{ + struct drm_plane *plane = plane_state->plane; + pixman_box32_t *rects; + uint32_t blob_id; + int n_rects; + int ret; + + if (!pixman_region32_not_empty(&plane_state->damage)) + return 0; + + rects = pixman_region32_rectangles(&plane_state->damage, &n_rects); + + ret = drmModeCreatePropertyBlob(backend->drm.fd, rects, + sizeof(*rects) * n_rects, &blob_id); + if (ret != 0) + return ret; + + ret = plane_add_prop(req, plane, WDRM_PLANE_FB_DAMAGE_CLIPS, blob_id); + if (ret != 0) + return ret; + + return 0; +} + static int drm_output_apply_state_atomic(struct drm_output_state *state, drmModeAtomicReq *req, @@ -2477,6 +2511,7 @@ drm_output_apply_state_atomic(struct drm_output_state *state, plane_state->dest_w); ret |= plane_add_prop(req, plane, WDRM_PLANE_CRTC_H, plane_state->dest_h); + ret |= plane_add_damage(req, backend, plane_state);
if (ret != 0) { weston_log("couldn't set plane state\n");