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ClutterStageCogl: Ignore a clip the size of the stage

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If the clip region includes the entire stage, ignore it - we aren't
actually clipped.

https://bugzilla.gnome.org/show_bug.cgi?id=719901
This commit is contained in:
Owen W. Taylor 2013-12-04 23:54:27 -05:00
parent 97dcb108d0
commit cbb9d1e062
1 changed files with 12 additions and 2 deletions
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14
clutter/cogl/clutter-stage-cogl.c
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@ -398,6 +398,8 @@ static void
clutter_stage_cogl_redraw (ClutterStageWindow *stage_window)
{
ClutterStageCogl *stage_cogl = CLUTTER_STAGE_COGL (stage_window);
cairo_rectangle_int_t geom;
gboolean have_clip;
gboolean may_use_clipped_redraw;
gboolean use_clipped_redraw;
gboolean can_blit_sub_buffer;
@ -435,11 +437,19 @@ clutter_stage_cogl_redraw (ClutterStageWindow *stage_window)
has_buffer_age = cogl_clutter_winsys_has_feature (COGL_WINSYS_FEATURE_BUFFER_AGE);
_clutter_stage_window_get_geometry (stage_window, &geom);
/* NB: a zero width redraw clip == full stage redraw */
have_clip = (stage_cogl->bounding_redraw_clip.width != 0 &&
!(stage_cogl->bounding_redraw_clip.x == 0 &&
stage_cogl->bounding_redraw_clip.y == 0 &&
stage_cogl->bounding_redraw_clip.width == geom.width &&
stage_cogl->bounding_redraw_clip.height == geom.height));
may_use_clipped_redraw = FALSE;
if (_clutter_stage_window_can_clip_redraws (stage_window) &&
can_blit_sub_buffer &&
/* NB: a zero width redraw clip == full stage redraw */
stage_cogl->bounding_redraw_clip.width != 0 &&
have_clip &&
/* some drivers struggle to get going and produce some junk
* frames when starting up... */
stage_cogl->frame_count > 3)