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compositor: set the opaque region for some views with transform

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If the transform on a view is only a translation we can trivially
set the opaque region for it so to optimize the rendering.
Reviewed-by: Jonas Ådahl <jadahl@gmail.com>
This commit is contained in:
Giulio Camuffo 2016-09-04 18:50:46 +03:00 committed by Quentin Glidic
parent 3578497990
commit 148c1992ac
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GPG Key ID: AC203F96E2C34BB7
1 changed files with 9 additions and 0 deletions
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9
libweston/compositor.c
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@ -1192,6 +1192,15 @@ weston_view_update_transform_enable(struct weston_view *view)
return -1;
}
if (view->alpha == 1.0 &&
matrix->type == WESTON_MATRIX_TRANSFORM_TRANSLATE) {
pixman_region32_copy(&view->transform.opaque,
&view->surface->opaque);
pixman_region32_translate(&view->transform.opaque,
matrix->d[12],
matrix->d[13]);
}
pixman_region32_init_rect(&surfregion, 0, 0,
view->surface->width, view->surface->height);
if (view->geometry.scissor_enabled)