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ClutterStageCogl: Ignore a clip the size of the stage
If the clip region includes the entire stage, ignore it - we aren't actually clipped. https://bugzilla.gnome.org/show_bug.cgi?id=719901
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@ -398,6 +398,8 @@ static void
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clutter_stage_cogl_redraw (ClutterStageWindow *stage_window)
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{
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ClutterStageCogl *stage_cogl = CLUTTER_STAGE_COGL (stage_window);
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cairo_rectangle_int_t geom;
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gboolean have_clip;
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gboolean may_use_clipped_redraw;
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gboolean use_clipped_redraw;
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gboolean can_blit_sub_buffer;
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@ -435,11 +437,19 @@ clutter_stage_cogl_redraw (ClutterStageWindow *stage_window)
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has_buffer_age = cogl_clutter_winsys_has_feature (COGL_WINSYS_FEATURE_BUFFER_AGE);
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_clutter_stage_window_get_geometry (stage_window, &geom);
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/* NB: a zero width redraw clip == full stage redraw */
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have_clip = (stage_cogl->bounding_redraw_clip.width != 0 &&
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!(stage_cogl->bounding_redraw_clip.x == 0 &&
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stage_cogl->bounding_redraw_clip.y == 0 &&
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stage_cogl->bounding_redraw_clip.width == geom.width &&
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stage_cogl->bounding_redraw_clip.height == geom.height));
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may_use_clipped_redraw = FALSE;
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if (_clutter_stage_window_can_clip_redraws (stage_window) &&
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can_blit_sub_buffer &&
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/* NB: a zero width redraw clip == full stage redraw */
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stage_cogl->bounding_redraw_clip.width != 0 &&
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have_clip &&
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/* some drivers struggle to get going and produce some junk
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* frames when starting up... */
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stage_cogl->frame_count > 3)
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