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backend-drm: Early-out for cursor plane format testing

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If we have a SHM buffer, it can only go into a cursor plane - and only
then if it's of the right format.

Signed-off-by: Daniel Stone <daniels@collabora.com>
This commit is contained in:
Daniel Stone 2021-12-07 16:42:02 +00:00
parent 66244856e2
commit ca4c2865e9
1 changed files with 12 additions and 11 deletions
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23
libweston/backend-drm/state-propose.c
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@ -691,15 +691,25 @@ drm_output_prepare_plane_view(struct drm_output_state *state,
buffer = ev->surface->buffer_ref.buffer;
shmbuf = wl_shm_buffer_get(buffer->resource);
if (!shmbuf)
if (shmbuf) {
if (!output->cursor_plane)
return NULL;
if (wl_shm_buffer_get_format(shmbuf) != WL_SHM_FORMAT_ARGB8888) {
drm_debug(b, "\t\t\t\t[view] not placing view %p on "
"plane; SHM buffers must be ARGB8888 for "
"cursor view", ev);
return NULL;
}
} else {
fb = drm_fb_get_from_view(state, ev, try_view_on_plane_failure_reasons);
}
if (!shmbuf && !fb)
return NULL;
/* assemble a list with possible candidates */
wl_list_for_each(plane, &b->plane_list, link) {
if (plane->type == WDRM_PLANE_TYPE_CURSOR &&
plane != output->cursor_plane) {
(plane != output->cursor_plane || !shmbuf)) {
continue;
}
@ -749,15 +759,6 @@ drm_output_prepare_plane_view(struct drm_output_state *state,
continue;
}
if (plane->type == WDRM_PLANE_TYPE_CURSOR &&
(!shmbuf || wl_shm_buffer_get_format(shmbuf) != WL_SHM_FORMAT_ARGB8888)) {
drm_debug(b, "\t\t\t\t[plane] not adding plane %d, type cursor to "
"candidate list: cursor planes only support ARGB8888"
"wl_shm buffers and the view buffer is of another type\n",
plane->plane_id);
continue;
}
if (plane->type != WDRM_PLANE_TYPE_CURSOR &&
(!fb || !(fb->plane_mask & (1 << plane->plane_idx)))) {
*try_view_on_plane_failure_reasons |=