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backend-drm: Teach drm_property_info_populate() to retrieve range values

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Useful for zpos range values.

Signed-off-by: Marius Vlad <marius.vlad@collabora.com>
Suggested-by: Daniel Stone <daniel.stone@collabora.com>
dev
Marius Vlad 5 years ago committed by Daniel Stone
parent 4b8b60ebfd
commit 95e3b0deae
7 changed files with 728 additions and 220 deletions
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  1. 44
      libweston/backend-drm/drm-internal.h
  2. 73
      libweston/backend-drm/drm.c
  3. 53
      libweston/backend-drm/kms.c
  4. 7
      libweston/backend-drm/state-helpers.c
  5. 730
      libweston/backend-drm/state-propose.c
  6. 35
      libweston/compositor.c
  7. 6
      libweston/libweston-internal.h

44
libweston/backend-drm/drm-internal.h
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@ -72,6 +72,10 @@
#define GBM_BO_USE_LINEAR (1 << 4)
#endif
#ifndef DRM_PLANE_ZPOS_INVALID_PLANE
#define DRM_PLANE_ZPOS_INVALID_PLANE 0xffffffffffffffffULL
#endif
/**
* A small wrapper to print information into the 'drm-backend' debug scope.
*
@ -144,8 +148,11 @@ struct drm_property_enum_info {
struct drm_property_info {
const char *name; /**< name as string (static, not freed) */
uint32_t prop_id; /**< KMS property object ID */
uint32_t flags;
unsigned int num_enum_values; /**< number of enum values */
struct drm_property_enum_info *enum_values; /**< array of enum values */
unsigned int num_range_values;
uint64_t range_values[2];
};
/**
@ -166,6 +173,7 @@ enum wdrm_plane_property {
WDRM_PLANE_IN_FORMATS,
WDRM_PLANE_IN_FENCE_FD,
WDRM_PLANE_FB_DAMAGE_CLIPS,
WDRM_PLANE_ZPOS,
WDRM_PLANE__COUNT
};
@ -361,6 +369,16 @@ struct drm_output_state {
struct wl_list plane_list;
};
/**
* An instance of this class is created each time we believe we have a plane
* suitable to be used by a view as a direct scan-out. The list is initalized
* and populated locally.
*/
struct drm_plane_zpos {
struct drm_plane *plane;
struct wl_list link; /**< :candidate_plane_zpos_list */
};
/**
* Plane state holds the dynamic state for a plane: where it is positioned,
* and which buffer it is currently displaying.
@ -382,6 +400,8 @@ struct drm_plane_state {
int32_t dest_x, dest_y;
uint32_t dest_w, dest_h;
uint64_t zpos;
bool complete;
/* We don't own the fd, so we shouldn't close it */
@ -423,6 +443,9 @@ struct drm_plane {
/* The last state submitted to the kernel for this plane. */
struct drm_plane_state *state_cur;
uint64_t zpos_min;
uint64_t zpos_max;
struct wl_list link;
struct {
@ -523,6 +546,22 @@ to_drm_mode(struct weston_mode *base)
return container_of(base, struct drm_mode, base);
}
static inline const char *
drm_output_get_plane_type_name(struct drm_plane *p)
{
switch (p->type) {
case WDRM_PLANE_TYPE_PRIMARY:
return "primary";
case WDRM_PLANE_TYPE_CURSOR:
return "cursor";
case WDRM_PLANE_TYPE_OVERLAY:
return "overlay";
default:
assert(0);
break;
}
}
struct drm_output *
drm_output_find_by_crtc(struct drm_backend *b, uint32_t crtc_id);
@ -579,6 +618,9 @@ uint64_t
drm_property_get_value(struct drm_property_info *info,
const drmModeObjectProperties *props,
uint64_t def);
uint64_t *
drm_property_get_range_values(struct drm_property_info *info,
const drmModeObjectProperties *props);
int
drm_plane_populate_formats(struct drm_plane *plane, const drmModePlane *kplane,
const drmModeObjectProperties *props);
@ -695,7 +737,7 @@ void
drm_plane_state_put_back(struct drm_plane_state *state);
bool
drm_plane_state_coords_for_view(struct drm_plane_state *state,
struct weston_view *ev);
struct weston_view *ev, uint64_t zpos);
void
drm_assign_planes(struct weston_output *output_base, void *repaint_data);

73
libweston/backend-drm/drm.c
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@ -68,6 +68,61 @@
static const char default_seat[] = "seat0";
static void
drm_backend_create_faked_zpos(struct drm_backend *b)
{
struct drm_plane *plane;
uint64_t zpos = 0ULL;
uint64_t zpos_min_primary;
uint64_t zpos_min_overlay;
uint64_t zpos_min_cursor;
zpos_min_primary = zpos;
wl_list_for_each(plane, &b->plane_list, link) {
/* if the property is there, bail out sooner */
if (plane->props[WDRM_PLANE_ZPOS].prop_id != 0)
return;
if (plane->type != WDRM_PLANE_TYPE_PRIMARY)
continue;
zpos++;
}
zpos_min_overlay = zpos;
wl_list_for_each(plane, &b->plane_list, link) {
if (plane->type != WDRM_PLANE_TYPE_OVERLAY)
continue;
zpos++;
}
zpos_min_cursor = zpos;
wl_list_for_each(plane, &b->plane_list, link) {
if (plane->type != WDRM_PLANE_TYPE_CURSOR)
continue;
zpos++;
}
drm_debug(b, "[drm-backend] zpos property not found. "
"Using invented immutable zpos values:\n");
/* assume that invented zpos values are immutable */
wl_list_for_each(plane, &b->plane_list, link) {
if (plane->type == WDRM_PLANE_TYPE_PRIMARY) {
plane->zpos_min = zpos_min_primary;
plane->zpos_max = zpos_min_primary;
} else if (plane->type == WDRM_PLANE_TYPE_OVERLAY) {
plane->zpos_min = zpos_min_overlay;
plane->zpos_max = zpos_min_overlay;
} else if (plane->type == WDRM_PLANE_TYPE_CURSOR) {
plane->zpos_min = zpos_min_cursor;
plane->zpos_max = zpos_min_cursor;
}
drm_debug(b, "\t[plane] %s plane %d, zpos_min %"PRIu64", "
"zpos_max %"PRIu64"\n",
drm_output_get_plane_type_name(plane),
plane->plane_id, plane->zpos_min, plane->zpos_max);
}
}
static void
wl_array_remove_uint32(struct wl_array *array, uint32_t elm)
{
@ -680,6 +735,7 @@ drm_plane_create(struct drm_backend *b, const drmModePlane *kplane,
{
struct drm_plane *plane;
drmModeObjectProperties *props;
uint64_t *zpos_range_values;
uint32_t num_formats = (kplane) ? kplane->count_formats : 1;
plane = zalloc(sizeof(*plane) +
@ -711,6 +767,18 @@ drm_plane_create(struct drm_backend *b, const drmModePlane *kplane,
props,
WDRM_PLANE_TYPE__COUNT);
zpos_range_values =
drm_property_get_range_values(&plane->props[WDRM_PLANE_ZPOS],
props);
if (zpos_range_values) {
plane->zpos_min = zpos_range_values[0];
plane->zpos_max = zpos_range_values[1];
} else {
plane->zpos_min = DRM_PLANE_ZPOS_INVALID_PLANE;
plane->zpos_max = DRM_PLANE_ZPOS_INVALID_PLANE;
}
if (drm_plane_populate_formats(plane, kplane, props) < 0) {
drmModeFreeObjectProperties(props);
goto err;
@ -724,6 +792,8 @@ drm_plane_create(struct drm_backend *b, const drmModePlane *kplane,
plane->count_formats = 1;
plane->formats[0].format = format;
plane->type = type;
plane->zpos_max = DRM_PLANE_ZPOS_INVALID_PLANE;
plane->zpos_min = DRM_PLANE_ZPOS_INVALID_PLANE;
}
if (plane->type == WDRM_PLANE_TYPE__COUNT)
@ -2841,6 +2911,9 @@ drm_backend_create(struct weston_compositor *compositor,
goto err_udev_input;
}
/* 'compute' faked zpos values in case HW doesn't expose any */
drm_backend_create_faked_zpos(b);
/* A this point we have some idea of whether or not we have a working
* cursor plane. */
if (!b->cursors_are_broken)

53
libweston/backend-drm/kms.c
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@ -77,6 +77,7 @@ const struct drm_property_info plane_props[] = {
[WDRM_PLANE_IN_FORMATS] = { .name = "IN_FORMATS" },
[WDRM_PLANE_IN_FENCE_FD] = { .name = "IN_FENCE_FD" },
[WDRM_PLANE_FB_DAMAGE_CLIPS] = { .name = "FB_DAMAGE_CLIPS" },
[WDRM_PLANE_ZPOS] = { .name = "zpos" },
};
struct drm_property_enum_info dpms_state_enums[] = {
@ -202,6 +203,42 @@ drm_property_get_value(struct drm_property_info *info,
return def;
}
/**
* Get the current range values of a KMS property
*
* Given a drmModeObjectGetProperties return, as well as the drm_property_info
* for the target property, return the current range values of that property,
*
* If the property is not present, or there's no it is not a prop range then
* NULL will be returned.
*
* @param info Internal structure for property to look up
* @param props Raw KMS properties for the target object
*/
uint64_t *
drm_property_get_range_values(struct drm_property_info *info,
const drmModeObjectProperties *props)
{
unsigned int i;
if (info->prop_id == 0)
return NULL;
for (i = 0; i < props->count_props; i++) {
if (props->props[i] != info->prop_id)
continue;
if (!(info->flags & DRM_MODE_PROP_RANGE) &&
!(info->flags & DRM_MODE_PROP_SIGNED_RANGE))
continue;
return info->range_values;
}
return NULL;
}
/**
* Cache DRM property values
*
@ -294,6 +331,15 @@ drm_property_info_populate(struct drm_backend *b,
}
info[j].prop_id = props->props[i];
info[j].flags = prop->flags;
if (prop->flags & DRM_MODE_PROP_RANGE ||
prop->flags & DRM_MODE_PROP_SIGNED_RANGE) {
info[j].num_range_values = prop->count_values;
for (int i = 0; i < prop->count_values; i++)
info[j].range_values[i] = prop->values[i];
}
if (info[j].num_enum_values == 0) {
drmModeFreeProperty(prop);
@ -1005,6 +1051,13 @@ drm_output_apply_state_atomic(struct drm_output_state *state,
plane_state->in_fence_fd);
}
/* do note, that 'invented' zpos values are set as immutable */
if (plane_state->zpos != DRM_PLANE_ZPOS_INVALID_PLANE &&
plane_state->plane->zpos_min != plane_state->plane->zpos_max)
ret |= plane_add_prop(req, plane,
WDRM_PLANE_ZPOS,
plane_state->zpos);
if (ret != 0) {
weston_log("couldn't set plane state\n");
return ret;

7
libweston/backend-drm/state-helpers.c
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@ -48,6 +48,7 @@ drm_plane_state_alloc(struct drm_output_state *state_output,
state->output_state = state_output;
state->plane = plane;
state->in_fence_fd = -1;
state->zpos = DRM_PLANE_ZPOS_INVALID_PLANE;
pixman_region32_init(&state->damage);
/* Here we only add the plane state to the desired link, and not
@ -80,6 +81,7 @@ drm_plane_state_free(struct drm_plane_state *state, bool force)
wl_list_init(&state->link);
state->output_state = NULL;
state->in_fence_fd = -1;
state->zpos = DRM_PLANE_ZPOS_INVALID_PLANE;
pixman_region32_fini(&state->damage);
if (force || state != state->plane->state_cur) {
@ -163,7 +165,7 @@ drm_plane_state_put_back(struct drm_plane_state *state)
*/
bool
drm_plane_state_coords_for_view(struct drm_plane_state *state,
struct weston_view *ev)
struct weston_view *ev, uint64_t zpos)
{
struct drm_output *output = state->output;
struct weston_buffer *buffer = ev->surface->buffer_ref.buffer;
@ -243,6 +245,9 @@ drm_plane_state_coords_for_view(struct drm_plane_state *state,
if (state->src_h > (uint32_t) ((buffer->height << 16) - state->src_y))
state->src_h = (buffer->height << 16) - state->src_y;
/* apply zpos if available */
state->zpos = zpos;
return true;
}

730
libweston/backend-drm/state-propose.c
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@ -62,155 +62,200 @@ drm_propose_state_mode_to_string(enum drm_output_propose_state_mode mode)
return drm_output_propose_state_mode_as_string[mode];
}
static struct drm_plane_state *
drm_output_prepare_overlay_view(struct drm_output_state *output_state,
struct weston_view *ev,
enum drm_output_propose_state_mode mode)
static void
drm_output_add_zpos_plane(struct drm_plane *plane, struct wl_list *planes)
{
struct drm_output *output = output_state->output;
struct weston_compositor *ec = output->base.compositor;
struct drm_backend *b = to_drm_backend(ec);
struct drm_plane *p;
struct drm_plane_state *state = NULL;
struct drm_fb *fb;
unsigned int i;
int ret;
enum {
NO_PLANES,
NO_PLANES_WITH_FORMAT,
NO_PLANES_ACCEPTED,
PLACED_ON_PLANE,
} availability = NO_PLANES;
struct drm_backend *b = plane->backend;
struct drm_plane_zpos *h_plane;
struct drm_plane_zpos *plane_zpos;
assert(!b->sprites_are_broken);
assert(b->atomic_modeset);
plane_zpos = zalloc(sizeof(*plane_zpos));
if (!plane_zpos)
return;
fb = drm_fb_get_from_view(output_state, ev);
if (!fb) {
drm_debug(b, "\t\t\t\t[overlay] not placing view %p on overlay: "
" couldn't get fb\n", ev);
return NULL;
plane_zpos->plane = plane;
drm_debug(b, "\t\t\t\t[plane] plane %d added to candidate list\n",
plane->plane_id);
if (wl_list_empty(planes)) {
wl_list_insert(planes, &plane_zpos->link);
return;
}
wl_list_for_each(p, &b->plane_list, link) {
if (p->type != WDRM_PLANE_TYPE_OVERLAY)
continue;
h_plane = wl_container_of(planes->next, h_plane, link);
if (h_plane->plane->zpos_max >= plane->zpos_max) {
wl_list_insert(planes->prev, &plane_zpos->link);
} else {
struct drm_plane_zpos *p_zpos = NULL;
if (!drm_plane_is_available(p, output))
continue;
if (wl_list_length(planes) == 1) {
wl_list_insert(planes->prev, &plane_zpos->link);
return;
}
state = drm_output_state_get_plane(output_state, p);
if (state->fb) {
state = NULL;
continue;
wl_list_for_each(p_zpos, planes, link) {
if (p_zpos->plane->zpos_max >
plane_zpos->plane->zpos_max)
break;
}
if (availability == NO_PLANES)
availability = NO_PLANES_WITH_FORMAT;
wl_list_insert(p_zpos->link.prev, &plane_zpos->link);
}
}
static void
drm_output_destroy_zpos_plane(struct drm_plane_zpos *plane_zpos)
{
wl_list_remove(&plane_zpos->link);
free(plane_zpos);
}
static bool
drm_output_check_plane_has_view_assigned(struct drm_plane *plane,
struct drm_output_state *output_state)
{
struct drm_plane_state *ps;
wl_list_for_each(ps, &output_state->plane_list, link) {
if (ps->plane == plane && ps->fb)
return true;
}
return false;
}
/* Check whether the format is supported */
for (i = 0; i < p->count_formats; i++) {
unsigned int j;
static bool
drm_output_plane_has_valid_format(struct drm_plane *plane,
struct drm_output_state *state,
struct drm_fb *fb)
{
struct drm_backend *b = plane->backend;
unsigned int i;
if (p->formats[i].format != fb->format->format)
continue;
if (!fb)
return false;
if (fb->modifier == DRM_FORMAT_MOD_INVALID)
break;
/* Check whether the format is supported */
for (i = 0; i < plane->count_formats; i++) {
unsigned int j;
for (j = 0; j < p->formats[i].count_modifiers; j++) {
if (p->formats[i].modifiers[j] == fb->modifier)
break;
}
if (j != p->formats[i].count_modifiers)
break;
}
if (i == p->count_formats) {
drm_plane_state_put_back(state);
state = NULL;
if (plane->formats[i].format != fb->format->format)
continue;
}
if (availability == NO_PLANES_WITH_FORMAT)
availability = NO_PLANES_ACCEPTED;
if (fb->modifier == DRM_FORMAT_MOD_INVALID)
return true;
state->ev = ev;
state->output = output;
if (!drm_plane_state_coords_for_view(state, ev)) {
drm_debug(b, "\t\t\t\t[overlay] not placing view %p on overlay: "
"unsuitable transform\n", ev);
drm_plane_state_put_back(state);
state = NULL;
continue;
for (j = 0; j < plane->formats[i].count_modifiers; j++) {
if (plane->formats[i].modifiers[j] == fb->modifier)
return true;
}
}
/* If the surface buffer has an in-fence fd, but the plane
* doesn't support fences, we can't place the buffer on this
* plane. */
if (ev->surface->acquire_fence_fd >= 0 &&
p->props[WDRM_PLANE_IN_FENCE_FD].prop_id == 0) {
drm_debug(b, "\t\t\t\t[overlay] not placing view %p on overlay: "
"no in-fence support\n", ev);
drm_plane_state_put_back(state);
state = NULL;
continue;
}
drm_debug(b, "\t\t\t\t[%s] not placing view on %s: "
"no free %s planes matching format %s (0x%lx) "
"modifier 0x%llx\n",
drm_output_get_plane_type_name(plane),
drm_output_get_plane_type_name(plane),
drm_output_get_plane_type_name(plane),
fb->format->drm_format_name,
(unsigned long) fb->format,
(unsigned long long) fb->modifier);
return false;
}
/* We hold one reference for the lifetime of this function;
* from calling drm_fb_get_from_view, to the out label where
* we unconditionally drop the reference. So, we take another
* reference here to live within the state. */
state->fb = drm_fb_ref(fb);
static bool
drm_output_plane_cursor_has_valid_format(struct weston_view *ev)
{
struct wl_shm_buffer *shmbuf =
wl_shm_buffer_get(ev->surface->buffer_ref.buffer->resource);
state->in_fence_fd = ev->surface->acquire_fence_fd;
if (shmbuf && wl_shm_buffer_get_format(shmbuf) == WL_SHM_FORMAT_ARGB8888)
return true;
/* In planes-only mode, we don't have an incremental state to
* test against, so we just hope it'll work. */
if (mode == DRM_OUTPUT_PROPOSE_STATE_PLANES_ONLY) {
drm_debug(b, "\t\t\t\t[overlay] provisionally placing "
"view %p on overlay %lu in planes-only mode\n",
ev, (unsigned long) p->plane_id);
availability = PLACED_ON_PLANE;
goto out;
}
return false;
}
ret = drm_pending_state_test(output_state->pending_state);
if (ret == 0) {
drm_debug(b, "\t\t\t\t[overlay] provisionally placing "
"view %p on overlay %d in mixed mode\n",
ev, p->plane_id);
availability = PLACED_ON_PLANE;
goto out;
}
static struct drm_plane_state *
drm_output_prepare_overlay_view(struct drm_plane *plane,
struct drm_output_state *output_state,
struct weston_view *ev,
enum drm_output_propose_state_mode mode,
struct drm_fb *fb, uint64_t zpos)
{
struct drm_output *output = output_state->output;
struct weston_compositor *ec = output->base.compositor;
struct drm_backend *b = to_drm_backend(ec);
struct drm_plane_state *state = NULL;
int ret;
assert(!b->sprites_are_broken);
assert(b->atomic_modeset);
drm_debug(b, "\t\t\t\t[overlay] not placing view %p on overlay %lu "
"in mixed mode: kernel test failed\n",
ev, (unsigned long) p->plane_id);
if (!fb) {
drm_debug(b, "\t\t\t\t[overlay] not placing view %p on overlay: "
" couldn't get fb\n", ev);
return NULL;
}
state = drm_output_state_get_plane(output_state, plane);
/* we can't have a 'pending' framebuffer as never set one before reaching here */
assert(!state->fb);
state->ev = ev;
state->output = output;
if (!drm_plane_state_coords_for_view(state, ev, zpos)) {
drm_debug(b, "\t\t\t\t[overlay] not placing view %p on overlay: "
"unsuitable transform\n", ev);
drm_plane_state_put_back(state);
state = NULL;
goto out;
}
switch (availability) {
case NO_PLANES:
drm_debug(b, "\t\t\t\t[overlay] not placing view %p on overlay: "
"no free overlay planes\n", ev);
break;
case NO_PLANES_WITH_FORMAT:
/* If the surface buffer has an in-fence fd, but the plane
* doesn't support fences, we can't place the buffer on this
* plane. */
if (ev->surface->acquire_fence_fd >= 0 &&
plane->props[WDRM_PLANE_IN_FENCE_FD].prop_id == 0) {
drm_debug(b, "\t\t\t\t[overlay] not placing view %p on overlay: "
"no free overlay planes matching format %s (0x%lx) "
"modifier 0x%llx\n",
ev, fb->format->drm_format_name,
(unsigned long) fb->format,
(unsigned long long) fb->modifier);
break;
case NO_PLANES_ACCEPTED:
case PLACED_ON_PLANE:
break;
"no in-fence support\n", ev);
drm_plane_state_put_back(state);
state = NULL;
goto out;
}
/* We hold one reference for the lifetime of this function; from
* calling drm_fb_get_from_view() in drm_output_prepare_plane_view(),
* so, we take another reference here to live within the state. */
state->fb = drm_fb_ref(fb);
state->in_fence_fd = ev->surface->acquire_fence_fd;
/* In planes-only mode, we don't have an incremental state to
* test against, so we just hope it'll work. */
if (mode == DRM_OUTPUT_PROPOSE_STATE_PLANES_ONLY) {
drm_debug(b, "\t\t\t[overlay] provisionally placing "
"view %p on overlay %lu in planes-only mode\n",
ev, (unsigned long) plane->plane_id);
goto out;
}
ret = drm_pending_state_test(output_state->pending_state);
if (ret == 0) {
drm_debug(b, "\t\t\t[overlay] provisionally placing "
"view %p on overlay %d in mixed mode\n",
ev, plane->plane_id);
goto out;
}
drm_debug(b, "\t\t\t[overlay] not placing view %p on overlay %lu "
"in mixed mode: kernel test failed\n",
ev, (unsigned long) plane->plane_id);
drm_plane_state_put_back(state);
state = NULL;
out:
drm_fb_unref(fb);
return state;
}
@ -254,14 +299,14 @@ cursor_bo_update(struct drm_plane_state *plane_state, struct weston_view *ev)
static struct drm_plane_state *
drm_output_prepare_cursor_view(struct drm_output_state *output_state,
struct weston_view *ev)
struct weston_view *ev, uint64_t zpos)
{
struct drm_output *output = output_state->output;
struct drm_backend *b = to_drm_backend(output->base.compositor);
struct drm_plane *plane = output->cursor_plane;
struct drm_plane_state *plane_state;
struct wl_shm_buffer *shmbuf;
bool needs_update = false;
const char *p_name = drm_output_get_plane_type_name(plane);
assert(!b->cursors_are_broken);
@ -278,24 +323,6 @@ drm_output_prepare_cursor_view(struct drm_output_state *output_state,
if (b->gbm == NULL)
return NULL;
if (ev->surface->buffer_ref.buffer == NULL) {
drm_debug(b, "\t\t\t\t[cursor] not assigning view %p to cursor plane "
"(no buffer available)\n", ev);
return NULL;
}
shmbuf = wl_shm_buffer_get(ev->surface->buffer_ref.buffer->resource);
if (!shmbuf) {
drm_debug(b, "\t\t\t\t[cursor] not assigning view %p to cursor plane "
"(buffer isn't SHM)\n", ev);
return NULL;
}
if (wl_shm_buffer_get_format(shmbuf) != WL_SHM_FORMAT_ARGB8888) {
drm_debug(b, "\t\t\t\t[cursor] not assigning view %p to cursor plane "
"(format 0x%lx unsuitable)\n",
ev, (unsigned long) wl_shm_buffer_get_format(shmbuf));
return NULL;
}
plane_state =
drm_output_state_get_plane(output_state, output->cursor_plane);
@ -305,16 +332,20 @@ drm_output_prepare_cursor_view(struct drm_output_state *output_state,
/* We can't scale with the legacy API, and we don't try to account for
* simple cropping/translation in cursor_bo_update. */
plane_state->output = output;
if (!drm_plane_state_coords_for_view(plane_state, ev))
if (!drm_plane_state_coords_for_view(plane_state, ev, zpos)) {
drm_debug(b, "\t\t\t\t[%s] not placing view %p on %s: "
"unsuitable transform\n", p_name, ev, p_name);
goto err;
}
if (plane_state->src_x != 0 || plane_state->src_y != 0 ||
plane_state->src_w > (unsigned) b->cursor_width << 16 ||
plane_state->src_h > (unsigned) b->cursor_height << 16 ||
plane_state->src_w != plane_state->dest_w << 16 ||
plane_state->src_h != plane_state->dest_h << 16) {
drm_debug(b, "\t\t\t\t[cursor] not assigning view %p to cursor plane "
"(positioning requires cropping or scaling)\n", ev);
drm_debug(b, "\t\t\t\t[%s] not assigning view %p to %s plane "
"(positioning requires cropping or scaling)\n",
p_name, ev, p_name);
goto err;
}
@ -340,7 +371,7 @@ drm_output_prepare_cursor_view(struct drm_output_state *output_state,
drm_fb_ref(output->gbm_cursor_fb[output->current_cursor]);
if (needs_update) {
drm_debug(b, "\t\t\t\t[cursor] copying new content to cursor BO\n");
drm_debug(b, "\t\t\t\t[%s] copying new content to cursor BO\n", p_name);
cursor_bo_update(plane_state, ev);
}
@ -353,8 +384,8 @@ drm_output_prepare_cursor_view(struct drm_output_state *output_state,
plane_state->dest_w = b->cursor_width;
plane_state->dest_h = b->cursor_height;
drm_debug(b, "\t\t\t\t[cursor] provisionally assigned view %p to cursor\n",
ev);
drm_debug(b, "\t\t\t\t[%s] provisionally assigned view %p to cursor\n",
p_name, ev);
return plane_state;
@ -365,7 +396,7 @@ err:
#else
static struct drm_plane_state *
drm_output_prepare_cursor_view(struct drm_output_state *output_state,
struct weston_view *ev)
struct weston_view *ev, uint64_t zpos)
{
return NULL;
}
@ -374,14 +405,14 @@ drm_output_prepare_cursor_view(struct drm_output_state *output_state,
static struct drm_plane_state *
drm_output_prepare_scanout_view(struct drm_output_state *output_state,
struct weston_view *ev,
enum drm_output_propose_state_mode mode)
enum drm_output_propose_state_mode mode,
struct drm_fb *fb, uint64_t zpos)
{
struct drm_output *output = output_state->output;
struct drm_backend *b = to_drm_backend(output->base.compositor);
struct drm_plane *scanout_plane = output->scanout_plane;
struct drm_plane_state *state;
struct drm_fb *fb;
pixman_box32_t *extents;
const char *p_name = drm_output_get_plane_type_name(scanout_plane);
assert(!b->sprites_are_broken);
assert(b->atomic_modeset);
@ -389,23 +420,25 @@ drm_output_prepare_scanout_view(struct drm_output_state *output_state,
/* Check the view spans exactly the output size, calculated in the
* logical co-ordinate space. */
extents = pixman_region32_extents(&ev->transform.boundingbox);
if (extents->x1 != output->base.x ||
extents->y1 != output->base.y ||
extents->x2 != output->base.x + output->base.width ||
extents->y2 != output->base.y + output->base.height)
if (!weston_view_matches_output_entirely(ev, &output->base)) {
drm_debug(b, "\t\t\t\t[%s] not placing view %p on %s: "
" view does not match output entirely\n",
p_name, ev, p_name);
return NULL;
}
/* If the surface buffer has an in-fence fd, but the plane doesn't
* support fences, we can't place the buffer on this plane. */
if (ev->surface->acquire_fence_fd >= 0 &&
scanout_plane->props[WDRM_PLANE_IN_FENCE_FD].prop_id == 0)
scanout_plane->props[WDRM_PLANE_IN_FENCE_FD].prop_id == 0) {
drm_debug(b, "\t\t\t\t[%s] not placing view %p on %s: "
"no in-fence support\n", p_name, ev, p_name);
return NULL;
}
fb = drm_fb_get_from_view(output_state, ev);
if (!fb) {
drm_debug(b, "\t\t\t\t[scanout] not placing view %p on scanout: "
" couldn't get fb\n", ev);
drm_debug(b, "\t\t\t\t[%s] not placing view %p on %s: "
" couldn't get fb\n", p_name, ev, p_name);
return NULL;
}
@ -417,16 +450,24 @@ drm_output_prepare_scanout_view(struct drm_output_state *output_state,
* and in the latter case, the view must have been marked as occluded,
* meaning we should never have ended up here. */
assert(!state->fb);
state->fb = fb;
/* take another reference here to live within the state */
state->fb = drm_fb_ref(fb);
state->ev = ev;
state->output = output;
if (!drm_plane_state_coords_for_view(state, ev))
if (!drm_plane_state_coords_for_view(state, ev, zpos)) {
drm_debug(b, "\t\t\t\t[%s] not placing view %p on %s: "
"unsuitable transform\n", p_name, ev, p_name);
goto err;
}
if (state->dest_x != 0 || state->dest_y != 0 ||
state->dest_w != (unsigned) output->base.current_mode->width ||
state->dest_h != (unsigned) output->base.current_mode->height)
state->dest_h != (unsigned) output->base.current_mode->height) {
drm_debug(b, "\t\t\t\t[%s] not placing view %p on %s: "
" invalid plane state\n", p_name, ev, p_name);
goto err;
}
state->in_fence_fd = ev->surface->acquire_fence_fd;
@ -439,6 +480,252 @@ err:
return NULL;
}
static bool
drm_output_plane_view_has_valid_format(struct drm_plane *plane,
struct drm_output_state *state,
struct weston_view *ev,
struct drm_fb *fb)
{
/* depending on the type of the plane we have different requirements */
switch (plane->type) {
case WDRM_PLANE_TYPE_CURSOR:
return drm_output_plane_cursor_has_valid_format(ev);
case WDRM_PLANE_TYPE_OVERLAY:
return drm_output_plane_has_valid_format(plane, state, fb);
case WDRM_PLANE_TYPE_PRIMARY:
return drm_output_plane_has_valid_format(plane, state, fb);
default:
assert(0);
return false;
}
return false;
}
static struct drm_plane_state *
drm_output_try_view_on_plane(struct drm_plane *plane,
struct drm_output_state *state,
struct weston_view *ev,
enum drm_output_propose_state_mode mode,
struct drm_fb *fb, uint64_t zpos)
{
struct drm_backend *b = state->pending_state->backend;
struct weston_output *wet_output = &state->output->base;
bool view_matches_entire_output, scanout_has_view_assigned;
struct drm_plane *scanout_plane = state->output->scanout_plane;
struct drm_plane_state *ps = NULL;
const char *p_name = drm_output_get_plane_type_name(plane);
enum {
NO_PLANES, /* generic err-handle */
NO_PLANES_ACCEPTED,
PLACED_ON_PLANE,
} availability = NO_PLANES;
/* sanity checks in case we over/underflow zpos or pass incorrect
* values */
assert(zpos <= plane->zpos_max ||
zpos != DRM_PLANE_ZPOS_INVALID_PLANE);
switch (plane->type) {
case WDRM_PLANE_TYPE_CURSOR:
if (b->cursors_are_broken) {
availability = NO_PLANES_ACCEPTED;
goto out;
}
ps = drm_output_prepare_cursor_view(state, ev, zpos);
if (ps)
availability = PLACED_ON_PLANE;
break;
case WDRM_PLANE_TYPE_OVERLAY:
/* do not attempt to place it in the overlay if we don't have
* anything in the scanout/primary and the view doesn't cover
* the entire output */
view_matches_entire_output =
weston_view_matches_output_entirely(ev, wet_output);
scanout_has_view_assigned =
drm_output_check_plane_has_view_assigned(scanout_plane,
state);
if (view_matches_entire_output && !scanout_has_view_assigned) {
availability = NO_PLANES_ACCEPTED;
goto out;
}
ps = drm_output_prepare_overlay_view(plane, state, ev, mode,
fb, zpos);
if (ps)
availability = PLACED_ON_PLANE;
break;
case WDRM_PLANE_TYPE_PRIMARY:
if (mode != DRM_OUTPUT_PROPOSE_STATE_PLANES_ONLY) {
availability = NO_PLANES_ACCEPTED;
goto out;
}
ps = drm_output_prepare_scanout_view(state, ev, mode,
fb, zpos);
if (ps)
availability = PLACED_ON_PLANE;
break;
default:
assert(0);
break;
}
out:
switch (availability) {
case NO_PLANES:
/* set initial to this catch-all case, such that
* prepare_cursor/overlay/scanout() should have/contain the
* reason for failling */
break;
case NO_PLANES_ACCEPTED:
drm_debug(b, "\t\t\t\t[plane] plane %d refusing to "
"place view %p in %s\n",
plane->plane_id, ev, p_name);
break;
case PLACED_ON_PLANE:
break;
}
return ps;
}
static int
drm_output_check_zpos_plane_states(struct drm_output_state *state)
{
struct drm_backend *b = state->pending_state->backend;
struct drm_plane_state *ps;
int ret = 0;
wl_list_for_each(ps, &state->plane_list, link) {
struct wl_list *next_node = ps->link.next;
bool found_dup = false;
/* find another plane with the same zpos value */
if (next_node == &state->plane_list)
break;
while (next_node && next_node != &state->plane_list) {
struct drm_plane_state *ps_next;
ps_next = container_of(next_node,
struct drm_plane_state,
link);
if (ps->zpos == ps_next->zpos) {
found_dup = true;
break;
}
next_node = next_node->next;
}
if (found_dup) {
ret = 1;
drm_debug(b, "\t\t\t[plane] found duplicate zpos values\n");
break;
}
}
return ret;
}
static struct drm_plane_state *
drm_output_prepare_plane_view(struct drm_output_state *state,
struct weston_view *ev,
enum drm_output_propose_state_mode mode,
uint64_t current_lowest_zpos)
{
struct drm_output *output = state->output;
struct drm_backend *b = to_drm_backend(output->base.compositor);
struct drm_plane_state *ps = NULL;
struct drm_plane *plane;
struct drm_plane_zpos *p_zpos, *p_zpos_next;
struct wl_list zpos_candidate_list;
struct drm_fb *fb;
wl_list_init(&zpos_candidate_list);
/* check view for valid buffer, doesn't make sense to even try */
if (!weston_view_has_valid_buffer(ev))
return ps;
fb = drm_fb_get_from_view(state, ev);
/* assemble a list with possible candidates */
wl_list_for_each(plane, &b->plane_list, link) {
if (!drm_plane_is_available(plane, output))
continue;
if (drm_output_check_plane_has_view_assigned(plane, state)) {
drm_debug(b, "\t\t\t\t[plane] not adding plane %d to"
" candidate list: view already assigned "
"to a plane\n", plane->plane_id);
continue;
}
if (plane->zpos_min >= current_lowest_zpos) {
drm_debug(b, "\t\t\t\t[plane] not adding plane %d to "
"candidate list: minium zpos (%"PRIu64") "
"plane's above current lowest zpos "
"(%"PRIu64")\n", plane->plane_id,
plane->zpos_min, current_lowest_zpos);
continue;
}
if (!drm_output_plane_view_has_valid_format(plane, state, ev, fb)) {
drm_debug(b, "\t\t\t\t[plane] not adding plane %d to "
"candidate list: invalid pixel format\n",
plane->plane_id);
continue;
}
drm_output_add_zpos_plane(plane, &zpos_candidate_list);
}
/* go over the potential candidate list and try to find a possible
* plane suitable for \c ev; start with the highest zpos value of a
* plane to maximize our chances, but do note we pass the zpos value
* based on current tracked value by \c current_lowest_zpos_in_use */
while (!wl_list_empty(&zpos_candidate_list)) {
struct drm_plane_zpos *head_p_zpos =
wl_container_of(zpos_candidate_list.next,
head_p_zpos, link);
struct drm_plane *plane = head_p_zpos->plane;
const char *p_name = drm_output_get_plane_type_name(plane);
uint64_t zpos;
if (current_lowest_zpos == DRM_PLANE_ZPOS_INVALID_PLANE)
zpos = plane->zpos_max;
else
zpos = MIN(current_lowest_zpos - 1, plane->zpos_max);
drm_debug(b, "\t\t\t\t[plane] plane %d picked "
"from candidate list, type: %s\n",
plane->plane_id, p_name);
ps = drm_output_try_view_on_plane(plane, state, ev,
mode, fb, zpos);
drm_output_destroy_zpos_plane(head_p_zpos);
if (ps) {
drm_debug(b, "\t\t\t\t[view] view %p has been placed to "
"%s plane with computed zpos %"PRIu64"\n",
ev, p_name, zpos);
break;
}
}
wl_list_for_each_safe(p_zpos, p_zpos_next, &zpos_candidate_list, link)
drm_output_destroy_zpos_plane(p_zpos);
drm_fb_unref(fb);
return ps;
}
static struct drm_output_state *
drm_output_propose_state(struct weston_output *output_base,
struct drm_pending_state *pending_state,
@ -449,10 +736,13 @@ drm_output_propose_state(struct weston_output *output_base,
struct drm_output_state *state;
struct drm_plane_state *scanout_state = NULL;
struct weston_view *ev;
pixman_region32_t surface_overlap, renderer_region, occluded_region;
bool planes_ok = (mode != DRM_OUTPUT_PROPOSE_STATE_RENDERER_ONLY);
pixman_region32_t surface_overlap, renderer_region, planes_region;
pixman_region32_t occluded_region;
bool renderer_ok = (mode != DRM_OUTPUT_PROPOSE_STATE_PLANES_ONLY);
int ret;
uint64_t current_lowest_zpos = DRM_PLANE_ZPOS_INVALID_PLANE;
assert(!output->state_last);
state = drm_output_state_duplicate(output->state_cur,
@ -502,20 +792,19 @@ drm_output_propose_state(struct weston_output *output_base,
(unsigned long) output->base.id);
}
/*
* Find a surface for each sprite in the output using some heuristics:
* 1) size
* 2) frequency of update
* 3) opacity (though some hw might support alpha blending)
* 4) clipping (this can be fixed with color keys)
*
* The idea is to save on blitting since this should save power.
* If we can get a large video surface on the sprite for example,
* the main display surface may not need to update at all, and
* the client buffer can be used directly for the sprite surface
* as we do for flipping full screen surfaces.
/* - renderer_region contains the total region which which will be
* covered by the renderer
* - planes_region contains the total region which has been covered by
* hardware planes
* - occluded_region contains the total region which which will be
* covered by the renderer and hardware planes, where the view's
* visible-and-opaque region is added in both cases (the view's
* opaque region accumulates there for each view); it is being used
* to skip the view, if it is completely occluded; includes the
* situation where occluded_region covers entire output's region.
*/
pixman_region32_init(&renderer_region);
pixman_region32_init(&planes_region);
pixman_region32_init(&occluded_region);
wl_list_for_each(ev, &output_base->compositor->view_list, link) {
@ -523,7 +812,6 @@ drm_output_propose_state(struct weston_output *output_base,
bool force_renderer = false;
pixman_region32_t clipped_view;
bool totally_occluded = false;
bool overlay_occluded = false;
drm_debug(b, "\t\t\t[view] evaluating view %p for "
"output %s (%lu)\n",
@ -546,7 +834,7 @@ drm_output_propose_state(struct weston_output *output_base,
force_renderer = true;
}
if (!ev->surface->buffer_ref.buffer) {
if (!weston_view_has_valid_buffer(ev)) {
drm_debug(b, "\t\t\t\t[view] not assigning view %p to plane "
"(no buffer available)\n", ev);
force_renderer = true;
@ -561,6 +849,9 @@ drm_output_propose_state(struct weston_output *output_base,
pixman_region32_init(&surface_overlap);
pixman_region32_subtract(&surface_overlap, &clipped_view,
&occluded_region);
/* if the view is completely occluded then ignore that
* view; includes the case where occluded_region covers
* the entire output */
totally_occluded = !pixman_region32_not_empty(&surface_overlap);
if (totally_occluded) {
drm_debug(b, "\t\t\t\t[view] ignoring view %p "
@ -580,6 +871,7 @@ drm_output_propose_state(struct weston_output *output_base,
"(occluded by renderer views)\n", ev);
force_renderer = true;
}
pixman_region32_fini(&surface_overlap);
/* In case of enforced mode of content-protection do not
* assign planes for a protected surface on an unsecured output.
@ -591,51 +883,18 @@ drm_output_propose_state(struct weston_output *output_base,
force_renderer = true;
}
/* We do not control the stacking order of overlay planes;
* the scanout plane is strictly stacked bottom and the cursor
* plane top, but the ordering of overlay planes with respect
* to each other is undefined. Make sure we do not have two
* planes overlapping each other. */
pixman_region32_intersect(&surface_overlap, &occluded_region,
&clipped_view);
if (pixman_region32_not_empty(&surface_overlap)) {
drm_debug(b, "\t\t\t\t[view] not assigning view %p to plane "
"(occluded by other overlay planes)\n", ev);
overlay_occluded = true;
if (!force_renderer) {
drm_debug(b, "\t\t\t[plane] started with zpos %"PRIu64"\n",
current_lowest_zpos);
ps = drm_output_prepare_plane_view(state, ev, mode,
current_lowest_zpos);
}
pixman_region32_fini(&surface_overlap);
/* The cursor plane is 'special' in the sense that we can still
* place it in the legacy API, and we gate that with a separate
* cursors_are_broken flag. */
if (!force_renderer && !overlay_occluded && !b->cursors_are_broken)
ps = drm_output_prepare_cursor_view(state, ev);
/* If sprites are disabled or the view is not fully opaque, we
* must put the view into the renderer - unless it has already
* been placed in the cursor plane, which can handle alpha. */
if (!ps && !planes_ok) {
drm_debug(b, "\t\t\t\t[view] not assigning view %p to plane "
"(precluded by mode)\n", ev);
force_renderer = true;
}
if (!ps && !weston_view_is_opaque(ev, &clipped_view)) {
drm_debug(b, "\t\t\t\t[view] not assigning view %p to plane "
"(view not fully opaque)\n", ev);
force_renderer = true;
}
/* Only try to place scanout surfaces in planes-only mode; in
* mixed mode, we have already failed to place a view on the
* scanout surface, forcing usage of the renderer on the
* scanout plane. */
if (!ps && !force_renderer && !renderer_ok)
ps = drm_output_prepare_scanout_view(state, ev, mode);
if (!ps && !overlay_occluded && !force_renderer)
ps = drm_output_prepare_overlay_view(state, ev, mode);
if (ps) {
current_lowest_zpos = ps->zpos;
drm_debug(b, "\t\t\t[plane] next zpos to use %"PRIu64"\n",
current_lowest_zpos);
/* If we have been assigned to an overlay or scanout
* plane, add this area to the occluded region, so
* other views are known to be behind it. The cursor
@ -644,10 +903,22 @@ drm_output_propose_state(struct weston_output *output_base,
* be added to the renderer region nor the occluded
* region. */
if (ps->plane->type != WDRM_PLANE_TYPE_CURSOR) {
pixman_region32_union(&planes_region,
&planes_region,
&clipped_view);
if (!weston_view_is_opaque(ev, &clipped_view))
pixman_region32_intersect(&clipped_view,
&clipped_view,
&ev->transform.opaque);
/* the visible-and-opaque region of this view
* will occlude views underneath it */
pixman_region32_union(&occluded_region,
&occluded_region,
&clipped_view);
pixman_region32_fini(&clipped_view);
}
continue;
}
@ -666,9 +937,24 @@ drm_output_propose_state(struct weston_output *output_base,
pixman_region32_union(&renderer_region,
&renderer_region,
&clipped_view);
if (!weston_view_is_opaque(ev, &clipped_view))
pixman_region32_intersect(&clipped_view,
&clipped_view,
&ev->transform.opaque);
pixman_region32_union(&occluded_region,
&occluded_region,
&clipped_view);
pixman_region32_fini(&clipped_view);
drm_debug(b, "\t\t\t\t[view] view %p will be placed "
"on the renderer\n", ev);
}
pixman_region32_fini(&renderer_region);
pixman_region32_fini(&planes_region);
pixman_region32_fini(&occluded_region);
/* In renderer-only mode, we can't test the state as we don't have a
@ -676,6 +962,14 @@ drm_output_propose_state(struct weston_output *output_base,
if (mode == DRM_OUTPUT_PROPOSE_STATE_RENDERER_ONLY)
return state;
/* check if we have invalid zpos values, like duplicate(s) */
ret = drm_output_check_zpos_plane_states(state);
if (ret != 0) {
drm_debug(b, "\t\t[view] failing state generation: "
"zpos values are in-consistent\n");
goto err;
}
/* Check to see if this state will actually work. */
ret = drm_pending_state_test(state->pending_state);
if (ret != 0) {
@ -764,7 +1058,7 @@ drm_assign_planes(struct weston_output *output_base, void *repaint_data)
* to the buffer anyway, there is no side effects.
*/
if (b->use_pixman ||
(ev->surface->buffer_ref.buffer &&
(weston_view_has_valid_buffer(ev) &&
(!wl_shm_buffer_get(ev->surface->buffer_ref.buffer->resource) ||
(ev->surface->width <= b->cursor_width &&
ev->surface->height <= b->cursor_height))))

35
libweston/compositor.c
Unescape View File

@ -1852,6 +1852,41 @@ weston_view_is_opaque(struct weston_view *ev, pixman_region32_t *region)
return ret;
}
/** Check if the view has a valid buffer available
*
* @param ev The view to check if it has a valid buffer.
*
* Returns true if the view has a valid buffer or false otherwise.
*/
WL_EXPORT bool
weston_view_has_valid_buffer(struct weston_view *ev)
{
return ev->surface->buffer_ref.buffer != NULL;
}
/** Check if the view matches the entire output
*
* @param ev The view to check.
* @param output The output to check against.
*
* Returns true if the view does indeed matches the entire output.
*/
WL_EXPORT bool
weston_view_matches_output_entirely(struct weston_view *ev,
struct weston_output *output)
{
pixman_box32_t *extents =
pixman_region32_extents(&ev->transform.boundingbox);
if (extents->x1 != output->x ||
extents->y1 != output->y ||
extents->x2 != output->x + output->width ||
extents->y2 != output->y + output->height)
return false;
return true;
}
/* Check if a surface has a view assigned to it
*
* The indicator is set manually when mapping

6
libweston/libweston-internal.h
Unescape View File

@ -287,6 +287,12 @@ weston_view_from_global_float(struct weston_view *view,
bool
weston_view_is_opaque(struct weston_view *ev, pixman_region32_t *region);
bool
weston_view_has_valid_buffer(struct weston_view *ev);
bool
weston_view_matches_output_entirely(struct weston_view *ev,
struct weston_output *output);
void
weston_view_move_to_plane(struct weston_view *view,
struct weston_plane *plane);

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