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surface: Only rebuild surface size where necessary

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The only time we need to go through recalculating the surface size is
when either the buffer dimensions or the surface transforms have
changed. Now that we have dirty flags, use them to avoid a calculation
where required.

Signed-off-by: Daniel Stone <daniels@collabora.com>
This commit is contained in:
Daniel Stone 2023-06-20 01:38:58 +01:00
parent e9c67aedba
commit 160f91b8e1
1 changed files with 24 additions and 15 deletions
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39
libweston/compositor.c
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@ -2671,13 +2671,10 @@ bind_single_pixel_buffer(struct wl_client *client, void *data, uint32_t version,
static enum weston_surface_status
weston_surface_attach(struct weston_surface *surface,
struct weston_surface_state *state)
struct weston_surface_state *state,
enum weston_surface_status status)
{
struct weston_buffer_viewport *vp = &state->buffer_viewport;
int32_t old_width = surface->width_from_buffer;
int32_t old_height = surface->height_from_buffer;
struct weston_buffer *buffer = state->buffer;
enum weston_surface_status status = WESTON_SURFACE_CLEAN;
if (!buffer) {
if (weston_surface_is_mapped(surface)) {
@ -2698,16 +2695,28 @@ weston_surface_attach(struct weston_surface *surface,
return status;
}
convert_size_by_transform_scale(&surface->width_from_buffer,
&surface->height_from_buffer,
buffer->width,
buffer->height,
vp->buffer.transform,
vp->buffer.scale);
/* Recalculate the surface size if the buffer dimensions or the
* surface transforms (viewport, rotation/mirror, scale) have
* changed. */
if (!surface->buffer_ref.buffer ||
buffer->width != surface->buffer_ref.buffer->width ||
buffer->height != surface->buffer_ref.buffer->height ||
(status & WESTON_SURFACE_DIRTY_SIZE)) {
struct weston_buffer_viewport *vp = &state->buffer_viewport;
int32_t old_width = surface->width_from_buffer;
int32_t old_height = surface->height_from_buffer;
if (surface->width_from_buffer != old_width ||
surface->height_from_buffer != old_height) {
status |= WESTON_SURFACE_DIRTY_SIZE;
convert_size_by_transform_scale(&surface->width_from_buffer,
&surface->height_from_buffer,
buffer->width,
buffer->height,
vp->buffer.transform,
vp->buffer.scale);
if (surface->width_from_buffer != old_width ||
surface->height_from_buffer != old_height) {
status |= WESTON_SURFACE_DIRTY_SIZE;
}
}
status |= WESTON_SURFACE_DIRTY_BUFFER;
@ -4125,7 +4134,7 @@ weston_surface_commit_state(struct weston_surface *surface,
/* wp_presentation.feedback */
weston_presentation_feedback_discard_list(&surface->feedback_list);
status |= weston_surface_attach(surface, state);
status |= weston_surface_attach(surface, state, status);
}
weston_surface_state_set_buffer(state, NULL);
assert(state->acquire_fence_fd == -1);