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compositor-drm: Don't repaint if no damage

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If we don't have any damage for the primary plane, then don't force a
repaint; simply reuse the old buffer we already have.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
This commit is contained in:
Daniel Stone
2016-11-14 17:46:59 +00:00
parent 02d487a590
commit e95169b6af
1 changed files with 13 additions and 2 deletions
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libweston/compositor-drm.c
+13 -2
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@@ -1561,6 +1561,7 @@ drm_output_render(struct drm_output_state *state, pixman_region32_t *damage)
struct drm_output *output = state->output;
struct weston_compositor *c = output->base.compositor;
struct drm_plane_state *scanout_state;
struct drm_plane *scanout_plane = output->scanout_plane;
struct drm_backend *b = to_drm_backend(c);
struct drm_fb *fb;
@@ -1571,10 +1572,20 @@ drm_output_render(struct drm_output_state *state, pixman_region32_t *damage)
if (scanout_state->fb)
return;
if (b->use_pixman)
if (!pixman_region32_not_empty(damage) &&
scanout_plane->state_cur->fb &&
(scanout_plane->state_cur->fb->type == BUFFER_GBM_SURFACE ||
scanout_plane->state_cur->fb->type == BUFFER_PIXMAN_DUMB) &&
scanout_plane->state_cur->fb->width ==
output->base.current_mode->width &&
scanout_plane->state_cur->fb->height ==
output->base.current_mode->height) {
fb = drm_fb_ref(scanout_plane->state_cur->fb);
} else if (b->use_pixman) {
fb = drm_output_render_pixman(state, damage);
else
} else {
fb = drm_output_render_gl(state, damage);
}
if (!fb) {
drm_plane_state_put_back(scanout_state);