5f181f7265
This tweaks the semantics of the has_redraw_clips vfunc so we can assume that at the start of a new frame there is an implied, initial, redraw_clip that clips everything (i.e. nothing would be redrawn) so in that case we would expect the has_redraw_clips vfunc to return True at the start of a new frame for backends that support clipping. Previously there was an ambiguity when this function returned False since it could either mean a full screen redraw had been queued or it could mean that the clip state wasn't yet initialized for that frame. This would result in _clutter_stage_has_full_redraw_queued() returning True at the start of a new frame even before any actors have been updated, which in turn meant we would incorrectly ignore queue_redraw requests for actors, believing them to be redundant.
580 lines
18 KiB
C
580 lines
18 KiB
C
#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "clutter-stage-egl.h"
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#include "clutter-egl.h"
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#include "clutter-backend-egl.h"
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#include "clutter-debug.h"
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#include "clutter-event.h"
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#include "clutter-enum-types.h"
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#include "clutter-feature.h"
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#include "clutter-main.h"
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#include "clutter-private.h"
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#include "clutter-actor-private.h"
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#include "clutter-stage-private.h"
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#include "clutter-util.h"
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#ifdef COGL_HAS_X11_SUPPORT
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static ClutterStageWindowIface *clutter_stage_egl_parent_iface = NULL;
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#endif
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static void clutter_stage_window_iface_init (ClutterStageWindowIface *iface);
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G_DEFINE_TYPE_WITH_CODE (ClutterStageEGL,
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_clutter_stage_egl,
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#ifdef COGL_HAS_X11_SUPPORT
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CLUTTER_TYPE_STAGE_X11,
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#else
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G_TYPE_OBJECT,
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#endif
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G_IMPLEMENT_INTERFACE (CLUTTER_TYPE_STAGE_WINDOW,
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clutter_stage_window_iface_init));
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#ifdef COGL_HAS_XLIB_SUPPORT
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static void
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clutter_stage_egl_unrealize (ClutterStageWindow *stage_window)
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{
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ClutterBackend *backend = clutter_get_default_backend ();
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ClutterBackendX11 *backend_x11 = CLUTTER_BACKEND_X11 (backend);
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ClutterStageEGL *stage_egl = CLUTTER_STAGE_EGL (stage_window);
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ClutterStageX11 *stage_x11 = CLUTTER_STAGE_X11 (stage_window);
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CLUTTER_NOTE (BACKEND, "Unrealizing stage");
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clutter_x11_trap_x_errors ();
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if (!stage_x11->is_foreign_xwin && stage_x11->xwin != None)
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{
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XDestroyWindow (backend_x11->xdpy, stage_x11->xwin);
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stage_x11->xwin = None;
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}
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else
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stage_x11->xwin = None;
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if (stage_egl->egl_surface != EGL_NO_SURFACE)
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{
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eglDestroySurface (clutter_eglx_display (), stage_egl->egl_surface);
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stage_egl->egl_surface = EGL_NO_SURFACE;
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}
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XSync (backend_x11->xdpy, False);
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clutter_x11_untrap_x_errors ();
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}
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static gboolean
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clutter_stage_egl_realize (ClutterStageWindow *stage_window)
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{
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ClutterStageEGL *stage_egl = CLUTTER_STAGE_EGL (stage_window);
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ClutterStageX11 *stage_x11 = CLUTTER_STAGE_X11 (stage_window);
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ClutterBackend *backend;
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ClutterBackendEGL *backend_egl;
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ClutterBackendX11 *backend_x11;
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EGLDisplay edpy;
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CLUTTER_NOTE (BACKEND, "Realizing main stage");
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backend = clutter_get_default_backend ();
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backend_egl = CLUTTER_BACKEND_EGL (backend);
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backend_x11 = CLUTTER_BACKEND_X11 (backend);
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edpy = clutter_eglx_display ();
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if (stage_x11->xwin == None)
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{
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XSetWindowAttributes xattr;
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unsigned long mask;
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XVisualInfo *xvisinfo;
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gfloat width, height;
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CLUTTER_NOTE (MISC, "Creating stage X window");
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xvisinfo = clutter_backend_x11_get_visual_info (backend_x11);
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if (xvisinfo == NULL)
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{
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g_critical ("Unable to find suitable GL visual.");
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return FALSE;
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}
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/* window attributes */
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xattr.background_pixel = WhitePixel (backend_x11->xdpy,
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backend_x11->xscreen_num);
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xattr.border_pixel = 0;
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xattr.colormap = XCreateColormap (backend_x11->xdpy,
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backend_x11->xwin_root,
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xvisinfo->visual,
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AllocNone);
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mask = CWBorderPixel | CWColormap;
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/* Call get_size - this will either get the geometry size (which
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* before we create the window is set to 640x480), or if a size
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* is set, it will get that. This lets you set a size on the
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* stage before it's realized.
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*/
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clutter_actor_get_size (CLUTTER_ACTOR (stage_x11->wrapper),
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&width,
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&height);
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stage_x11->xwin_width = (gint)width;
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stage_x11->xwin_height = (gint)height;
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stage_x11->xwin = XCreateWindow (backend_x11->xdpy,
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backend_x11->xwin_root,
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0, 0,
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stage_x11->xwin_width,
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stage_x11->xwin_height,
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0,
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xvisinfo->depth,
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InputOutput,
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xvisinfo->visual,
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mask, &xattr);
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CLUTTER_NOTE (BACKEND, "Stage [%p], window: 0x%x, size: %dx%d",
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stage_window,
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(unsigned int) stage_x11->xwin,
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stage_x11->xwin_width,
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stage_x11->xwin_height);
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XFree (xvisinfo);
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}
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if (stage_egl->egl_surface == EGL_NO_SURFACE)
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{
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stage_egl->egl_surface =
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eglCreateWindowSurface (edpy,
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backend_egl->egl_config,
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(NativeWindowType) stage_x11->xwin,
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NULL);
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}
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if (stage_egl->egl_surface == EGL_NO_SURFACE)
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g_warning ("Unable to create an EGL surface");
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if (clutter_x11_has_event_retrieval ())
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{
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if (clutter_x11_has_xinput ())
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{
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XSelectInput (backend_x11->xdpy, stage_x11->xwin,
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StructureNotifyMask |
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FocusChangeMask |
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ExposureMask |
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EnterWindowMask | LeaveWindowMask |
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PropertyChangeMask);
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#ifdef USE_XINPUT
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_clutter_x11_select_events (stage_x11->xwin);
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#endif
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}
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else
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XSelectInput (backend_x11->xdpy, stage_x11->xwin,
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StructureNotifyMask |
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FocusChangeMask |
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ExposureMask |
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PointerMotionMask |
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KeyPressMask | KeyReleaseMask |
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ButtonPressMask | ButtonReleaseMask |
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EnterWindowMask | LeaveWindowMask |
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PropertyChangeMask);
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}
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/* no user resize... */
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clutter_stage_x11_fix_window_size (stage_x11,
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stage_x11->xwin_width,
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stage_x11->xwin_height);
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clutter_stage_x11_set_wm_protocols (stage_x11);
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return clutter_stage_egl_parent_iface->realize (stage_window);
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}
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#else /* COGL_HAS_XLIB_SUPPORT */
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static void
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clutter_stage_egl_unrealize (ClutterStageWindow *stage_window)
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{
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}
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static gboolean
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clutter_stage_egl_realize (ClutterStageWindow *stage_window)
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{
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/* the EGL surface is created by the backend */
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return TRUE;
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}
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static void
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clutter_stage_egl_set_fullscreen (ClutterStageWindow *stage_window,
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gboolean fullscreen)
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{
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g_warning ("Stage of type '%s' do not support ClutterStage::set_fullscreen",
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G_OBJECT_TYPE_NAME (stage_window));
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}
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static void
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clutter_stage_egl_set_title (ClutterStageWindow *stage_window,
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const gchar *title)
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{
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g_warning ("Stage of type '%s' do not support ClutterStage::set_title",
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G_OBJECT_TYPE_NAME (stage_window));
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}
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static void
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clutter_stage_egl_set_cursor_visible (ClutterStageWindow *stage_window,
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gboolean cursor_visible)
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{
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g_warning ("Stage of type '%s' do not support ClutterStage::set_cursor_visible",
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G_OBJECT_TYPE_NAME (stage_window));
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}
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static ClutterActor *
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clutter_stage_egl_get_wrapper (ClutterStageWindow *stage_window)
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{
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return CLUTTER_ACTOR (CLUTTER_STAGE_EGL (stage_window)->wrapper);
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}
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static void
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clutter_stage_egl_show (ClutterStageWindow *stage_window,
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gboolean do_raise)
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{
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ClutterStageEGL *stage_egl = CLUTTER_STAGE_EGL (stage_window);
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clutter_actor_map (CLUTTER_ACTOR (stage_egl->wrapper));
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}
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static void
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clutter_stage_egl_hide (ClutterStageWindow *stage_window)
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{
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ClutterStageEGL *stage_egl = CLUTTER_STAGE_EGL (stage_window);
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clutter_actor_unmap (CLUTTER_ACTOR (stage_egl->wrapper));
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}
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static void
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clutter_stage_egl_get_geometry (ClutterStageWindow *stage_window,
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ClutterGeometry *geometry)
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{
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ClutterStageEGL *stage_egl = CLUTTER_STAGE_EGL (stage_window);
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ClutterBackendEGL *backend_egl = stage_egl->backend;
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if (geometry)
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{
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geometry->x = geometry->y = 0;
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geometry->width = backend_egl->surface_width;
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geometry->height = backend_egl->surface_height;
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}
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}
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static void
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clutter_stage_egl_resize (ClutterStageWindow *stage_window,
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gint width,
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gint height)
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{
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}
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#endif /* COGL_HAS_XLIB_SUPPORT */
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static gboolean
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clutter_stage_egl_has_redraw_clips (ClutterStageWindow *stage_window)
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{
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ClutterStageEGL *stage_egl = CLUTTER_STAGE_EGL (stage_window);
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/* NB: at the start of each new frame there is an implied clip that
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* clips everything (i.e. nothing would be drawn) so we need to make
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* sure we return True in the un-initialized case here.
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*
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* NB: a clip width of 0 means a full stage redraw has been queued
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* so we effectively don't have any redraw clips in that case.
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*/
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if (!stage_egl->initialized_redraw_clip ||
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(stage_egl->initialized_redraw_clip &&
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stage_egl->bounding_redraw_clip.width != 0))
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return TRUE;
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else
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return FALSE;
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}
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static gboolean
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clutter_stage_egl_ignoring_redraw_clips (ClutterStageWindow *stage_window)
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{
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ClutterStageEGL *stage_egl = CLUTTER_STAGE_EGL (stage_window);
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/* NB: a clip width of 0 means a full stage redraw is required */
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if (stage_egl->initialized_redraw_clip &&
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stage_egl->bounding_redraw_clip.width == 0)
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return TRUE;
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else
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return FALSE;
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}
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/* A redraw clip represents (in stage coordinates) the bounding box of
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* something that needs to be redraw. Typically they are added to the
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* StageWindow as a result of clutter_actor_queue_clipped_redraw() by
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* actors such as ClutterEGLTexturePixmap. All redraw clips are
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* discarded after the next paint.
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*
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* A NULL stage_clip means the whole stage needs to be redrawn.
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*
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* What we do with this information:
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* - we keep track of the bounding box for all redraw clips
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* - when we come to redraw; we scissor the redraw to that box and use
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* glBlitFramebuffer to present the redraw to the front
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* buffer.
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*/
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static void
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clutter_stage_egl_add_redraw_clip (ClutterStageWindow *stage_window,
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ClutterGeometry *stage_clip)
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{
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ClutterStageEGL *stage_egl = CLUTTER_STAGE_EGL (stage_window);
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/* If we are already forced to do a full stage redraw then bail early */
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if (clutter_stage_egl_ignoring_redraw_clips (stage_window))
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return;
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/* A NULL stage clip means a full stage redraw has been queued and
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* we keep track of this by setting a zero width
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* stage_egl->bounding_redraw_clip */
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if (stage_clip == NULL)
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{
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stage_egl->bounding_redraw_clip.width = 0;
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stage_egl->initialized_redraw_clip = TRUE;
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return;
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}
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/* Ignore requests to add degenerate/empty clip rectangles */
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if (stage_clip->width == 0 || stage_clip->height == 0)
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return;
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if (!stage_egl->initialized_redraw_clip)
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{
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stage_egl->bounding_redraw_clip.x = stage_clip->x;
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stage_egl->bounding_redraw_clip.y = stage_clip->y;
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stage_egl->bounding_redraw_clip.width = stage_clip->width;
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stage_egl->bounding_redraw_clip.height = stage_clip->height;
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}
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else if (stage_egl->bounding_redraw_clip.width > 0)
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{
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clutter_geometry_union (&stage_egl->bounding_redraw_clip, stage_clip,
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&stage_egl->bounding_redraw_clip);
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}
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stage_egl->initialized_redraw_clip = TRUE;
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}
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static void
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clutter_stage_window_iface_init (ClutterStageWindowIface *iface)
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{
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#ifdef COGL_HAS_X11_SUPPORT
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clutter_stage_egl_parent_iface = g_type_interface_peek_parent (iface);
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iface->realize = clutter_stage_egl_realize;
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iface->unrealize = clutter_stage_egl_unrealize;
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/* the rest is inherited from ClutterStageX11 */
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#else /* COGL_HAS_X11_SUPPORT */
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iface->realize = clutter_stage_egl_realize;
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iface->unrealize = clutter_stage_egl_unrealize;
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iface->set_fullscreen = clutter_stage_egl_set_fullscreen;
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iface->set_title = clutter_stage_egl_set_title;
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iface->set_cursor_visible = clutter_stage_egl_set_cursor_visible;
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iface->get_wrapper = clutter_stage_egl_get_wrapper;
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iface->get_geometry = clutter_stage_egl_get_geometry;
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iface->resize = clutter_stage_egl_resize;
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iface->show = clutter_stage_egl_show;
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iface->hide = clutter_stage_egl_hide;
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#endif /* COGL_HAS_X11_SUPPORT */
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iface->add_redraw_clip = clutter_stage_egl_add_redraw_clip;
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iface->has_redraw_clips = clutter_stage_egl_has_redraw_clips;
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iface->ignoring_redraw_clips = clutter_stage_egl_ignoring_redraw_clips;
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}
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#ifdef COGL_HAS_X11_SUPPORT
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static void
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clutter_stage_egl_dispose (GObject *gobject)
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{
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G_OBJECT_CLASS (_clutter_stage_egl_parent_class)->dispose (gobject);
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}
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static void
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_clutter_stage_egl_class_init (ClutterStageEGLClass *klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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gobject_class->dispose = clutter_stage_egl_dispose;
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}
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static void
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_clutter_stage_egl_init (ClutterStageEGL *stage)
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{
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stage->egl_surface = EGL_NO_SURFACE;
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}
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#else /* COGL_HAS_X11_SUPPORT */
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static void
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_clutter_stage_egl_class_init (ClutterStageEGLClass *klass)
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{
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}
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static void
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_clutter_stage_egl_init (ClutterStageEGL *stage)
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{
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/* Without X we only support one surface and that is associated
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* with the backend directly instead of the stage */
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}
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#endif /* COGL_HAS_X11_SUPPORT */
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void
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_clutter_stage_egl_redraw (ClutterStageEGL *stage_egl,
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ClutterStage *stage)
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{
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ClutterBackend *backend = clutter_get_default_backend ();
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ClutterBackendEGL *backend_egl = CLUTTER_BACKEND_EGL (backend);
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ClutterActor *wrapper;
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EGLSurface egl_surface;
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gboolean may_use_clipped_redraw;
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gboolean use_clipped_redraw;
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#ifdef COGL_HAS_X11_SUPPORT
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ClutterStageX11 *stage_x11 = CLUTTER_STAGE_X11 (stage_egl);
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wrapper = CLUTTER_ACTOR (stage_x11->wrapper);
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egl_surface = stage_egl->egl_surface;
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#else
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wrapper = CLUTTER_ACTOR (stage_egl->wrapper);
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/* Without X we only support one surface and that is associated
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* with the backend directly instead of the stage */
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egl_surface = backend_egl->egl_surface;
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#endif
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if (G_LIKELY (backend_egl->can_blit_sub_buffer) &&
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/* NB: a zero width clip == full stage redraw */
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stage_egl->bounding_redraw_clip.width != 0 &&
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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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G_LIKELY (stage_egl->frame_count > 3) &&
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/* While resizing a window clipped redraws are disabled to avoid
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* artefacts. See clutter-event-x11.c:event_translate for a
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* detailed explanation */
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G_LIKELY (stage_x11->clipped_redraws_cool_off == 0))
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may_use_clipped_redraw = TRUE;
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else
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may_use_clipped_redraw = FALSE;
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if (may_use_clipped_redraw &&
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G_LIKELY (!(clutter_paint_debug_flags &
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CLUTTER_DEBUG_DISABLE_CLIPPED_REDRAWS)))
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use_clipped_redraw = TRUE;
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else
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use_clipped_redraw = FALSE;
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if (use_clipped_redraw)
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{
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cogl_clip_push_window_rectangle (stage_egl->bounding_redraw_clip.x,
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stage_egl->bounding_redraw_clip.y,
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stage_egl->bounding_redraw_clip.width,
|
|
stage_egl->bounding_redraw_clip.height);
|
|
_clutter_stage_do_paint (stage, &stage_egl->bounding_redraw_clip);
|
|
cogl_clip_pop ();
|
|
}
|
|
else
|
|
_clutter_stage_do_paint (stage, NULL);
|
|
|
|
if (clutter_paint_debug_flags & CLUTTER_DEBUG_REDRAWS &&
|
|
may_use_clipped_redraw)
|
|
{
|
|
ClutterGeometry *clip = &stage_egl->bounding_redraw_clip;
|
|
static CoglMaterial *outline = NULL;
|
|
CoglHandle vbo;
|
|
float x_1 = clip->x;
|
|
float x_2 = clip->x + clip->width;
|
|
float y_1 = clip->y;
|
|
float y_2 = clip->y + clip->height;
|
|
float quad[8] = {
|
|
x_1, y_1,
|
|
x_2, y_1,
|
|
x_2, y_2,
|
|
x_1, y_2
|
|
};
|
|
CoglMatrix modelview;
|
|
|
|
if (outline == NULL)
|
|
{
|
|
outline = cogl_material_new ();
|
|
cogl_material_set_color4ub (outline, 0xff, 0x00, 0x00, 0xff);
|
|
}
|
|
|
|
vbo = cogl_vertex_buffer_new (4);
|
|
cogl_vertex_buffer_add (vbo,
|
|
"gl_Vertex",
|
|
2, /* n_components */
|
|
COGL_ATTRIBUTE_TYPE_FLOAT,
|
|
FALSE, /* normalized */
|
|
0, /* stride */
|
|
quad);
|
|
cogl_vertex_buffer_submit (vbo);
|
|
|
|
cogl_push_matrix ();
|
|
cogl_matrix_init_identity (&modelview);
|
|
_clutter_actor_apply_modelview_transform (CLUTTER_ACTOR (stage),
|
|
&modelview);
|
|
cogl_set_modelview_matrix (&modelview);
|
|
cogl_set_source (outline);
|
|
cogl_vertex_buffer_draw (vbo, COGL_VERTICES_MODE_LINE_LOOP,
|
|
0 , 4);
|
|
cogl_pop_matrix ();
|
|
cogl_object_unref (vbo);
|
|
}
|
|
|
|
cogl_flush ();
|
|
|
|
/* push on the screen */
|
|
if (use_clipped_redraw)
|
|
{
|
|
ClutterGeometry *clip = &stage_egl->bounding_redraw_clip;
|
|
ClutterGeometry copy_area;
|
|
|
|
CLUTTER_NOTE (BACKEND,
|
|
"_egl_blit_sub_buffer (surface: %p, "
|
|
"x: %d, y: %d, "
|
|
"width: %d, height: %d)",
|
|
egl_surface,
|
|
stage_egl->bounding_redraw_clip.x,
|
|
stage_egl->bounding_redraw_clip.y,
|
|
stage_egl->bounding_redraw_clip.width,
|
|
stage_egl->bounding_redraw_clip.height);
|
|
|
|
copy_area.x = clip->x;
|
|
copy_area.y = clip->y;
|
|
copy_area.width = clip->width;
|
|
copy_area.height = clip->height;
|
|
|
|
CLUTTER_TIMER_START (_clutter_uprof_context, blit_sub_buffer_timer);
|
|
_clutter_backend_egl_blit_sub_buffer (backend_egl,
|
|
egl_surface,
|
|
copy_area.x,
|
|
copy_area.y,
|
|
copy_area.width,
|
|
copy_area.height);
|
|
CLUTTER_TIMER_STOP (_clutter_uprof_context, blit_sub_buffer_timer);
|
|
}
|
|
else
|
|
{
|
|
CLUTTER_NOTE (BACKEND, "eglwapBuffers (display: %p, surface: %p)",
|
|
backend_egl->edpy,
|
|
egl_surface);
|
|
|
|
CLUTTER_TIMER_START (_clutter_uprof_context, swapbuffers_timer);
|
|
eglSwapBuffers (backend_egl->edpy, egl_surface);
|
|
CLUTTER_TIMER_STOP (_clutter_uprof_context, swapbuffers_timer);
|
|
}
|
|
|
|
/* reset the redraw clipping for the next paint... */
|
|
stage_egl->initialized_redraw_clip = FALSE;
|
|
|
|
stage_egl->frame_count++;
|
|
}
|