e26a59afc8
The GDL API is used for example on intel ce4100 (aka Sodaville) based systems as a way to allocate memory that can be composited using the platforms overlay hardware. This updates the Cogl EGL winsys and the support in Clutter so we can continue to support these platforms.
524 lines
14 KiB
C
524 lines
14 KiB
C
/*
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* Clutter.
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*
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* An OpenGL based 'interactive canvas' library.
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*
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* Copyright (C) 2010 Intel Corporation.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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* Authors:
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* Matthew Allum
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* Emmanuele Bassi
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* Robert Bragg
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* Neil Roberts
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <errno.h>
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#include "clutter-backend-egl.h"
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#include "clutter-stage-egl.h"
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#include "clutter-egl.h"
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#ifdef HAVE_EVDEV
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#include "clutter-device-manager-evdev.h"
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#endif
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#include "clutter-debug.h"
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#include "clutter-private.h"
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#include "clutter-main.h"
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#include "clutter-stage-private.h"
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/* FIXME: We should have CLUTTER_ define for this... */
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#ifdef COGL_HAS_EGL_PLATFORM_GDL_SUPPORT
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#include "clutter-cex100.h"
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#endif
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static ClutterBackendEGL *backend_singleton = NULL;
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static gchar *clutter_vblank = NULL;
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/* FIXME: We should have CLUTTER_ define for this... */
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#ifdef COGL_HAS_EGL_PLATFORM_GDL_SUPPORT
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static gdl_plane_id_t gdl_plane = GDL_PLANE_ID_UPP_C;
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static guint gdl_n_buffers = CLUTTER_CEX100_TRIPLE_BUFFERING;
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#endif
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#ifdef COGL_HAS_X11_SUPPORT
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G_DEFINE_TYPE (ClutterBackendEGL, _clutter_backend_egl, CLUTTER_TYPE_BACKEND_X11);
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#else
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G_DEFINE_TYPE (ClutterBackendEGL, _clutter_backend_egl, CLUTTER_TYPE_BACKEND);
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#endif
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static void
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clutter_backend_at_exit (void)
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{
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if (backend_singleton)
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g_object_run_dispose (G_OBJECT (backend_singleton));
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}
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G_CONST_RETURN gchar*
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_clutter_backend_egl_get_vblank (void)
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{
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if (clutter_vblank && strcmp (clutter_vblank, "0") == 0)
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return "none";
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else
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return clutter_vblank;
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}
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static gboolean
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clutter_backend_egl_pre_parse (ClutterBackend *backend,
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GError **error)
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{
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const gchar *env_string;
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#ifdef COGL_HAS_X11_SUPPORT
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ClutterBackendClass *parent_class =
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CLUTTER_BACKEND_CLASS (_clutter_backend_egl_parent_class);
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if (!parent_class->pre_parse (backend, error))
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return FALSE;
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#endif
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env_string = g_getenv ("CLUTTER_VBLANK");
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if (env_string)
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{
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clutter_vblank = g_strdup (env_string);
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env_string = NULL;
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}
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return TRUE;
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}
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static gboolean
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clutter_backend_egl_post_parse (ClutterBackend *backend,
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GError **error)
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{
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#ifdef COGL_HAS_X11_SUPPORT
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ClutterBackendClass *parent_class =
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CLUTTER_BACKEND_CLASS (_clutter_backend_egl_parent_class);
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if (!parent_class->post_parse (backend, error))
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return FALSE;
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return TRUE;
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#endif
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g_atexit (clutter_backend_at_exit);
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return TRUE;
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}
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#ifndef COGL_HAS_XLIB_SUPPORT
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static ClutterDeviceManager *
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clutter_backend_egl_get_device_manager (ClutterBackend *backend)
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{
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ClutterBackendEGL *backend_egl = CLUTTER_BACKEND_EGL (backend);
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if (G_UNLIKELY (backend_egl->device_manager == NULL))
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{
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#ifdef HAVE_EVDEV
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backend_egl->device_manager =
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g_object_new (CLUTTER_TYPE_DEVICE_MANAGER_EVDEV,
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"backend", backend_egl,
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NULL);
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#endif
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}
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return backend_egl->device_manager;
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}
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#endif
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static void
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clutter_backend_egl_init_events (ClutterBackend *backend)
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{
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#ifdef HAVE_TSLIB
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/* XXX: This should be renamed to _clutter_events_tslib_init */
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_clutter_events_egl_init (CLUTTER_BACKEND_EGL (backend));
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#endif
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#ifdef HAVE_EVDEV
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_clutter_events_evdev_init (CLUTTER_BACKEND (backend));
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#endif
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#ifdef COGL_HAS_X11_SUPPORT
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/* Chain up to the X11 backend */
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CLUTTER_BACKEND_CLASS (_clutter_backend_egl_parent_class)->
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init_events (backend);
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#endif
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}
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static void
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clutter_backend_egl_finalize (GObject *gobject)
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{
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if (backend_singleton)
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backend_singleton = NULL;
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G_OBJECT_CLASS (_clutter_backend_egl_parent_class)->finalize (gobject);
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}
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static void
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clutter_backend_egl_dispose (GObject *gobject)
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{
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ClutterBackend *backend = CLUTTER_BACKEND (gobject);
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#ifdef HAVE_TSLIB
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ClutterBackendEGL *backend_egl = CLUTTER_BACKEND_EGL (gobject);
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#endif
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/* We chain up before disposing our CoglContext so that we will
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* destroy all of the stages first. Otherwise the actors may try to
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* make Cogl calls during destruction which would cause a crash */
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G_OBJECT_CLASS (_clutter_backend_egl_parent_class)->dispose (gobject);
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if (backend->cogl_context)
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{
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cogl_object_unref (backend->cogl_context);
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backend->cogl_context = NULL;
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}
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#ifdef HAVE_TSLIB
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/* XXX: This should be renamed to _clutter_events_tslib_uninit */
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_clutter_events_egl_uninit (backend_egl);
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if (backend_egl->event_timer != NULL)
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{
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g_timer_destroy (backend_egl->event_timer);
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backend_egl->event_timer = NULL;
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}
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#endif
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}
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static GObject *
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clutter_backend_egl_constructor (GType gtype,
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guint n_params,
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GObjectConstructParam *params)
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{
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GObjectClass *parent_class;
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GObject *retval;
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if (!backend_singleton)
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{
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parent_class = G_OBJECT_CLASS (_clutter_backend_egl_parent_class);
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retval = parent_class->constructor (gtype, n_params, params);
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backend_singleton = CLUTTER_BACKEND_EGL (retval);
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return retval;
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}
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g_warning ("Attempting to create a new backend object. This should "
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"never happen, so we return the singleton instance.");
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return g_object_ref (backend_singleton);
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}
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static ClutterFeatureFlags
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clutter_backend_egl_get_features (ClutterBackend *backend)
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{
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ClutterBackendEGL *backend_egl = CLUTTER_BACKEND_EGL (backend);
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#ifdef COGL_HAS_XLIB_SUPPORT
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ClutterBackendClass *parent_class;
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#endif
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ClutterFeatureFlags flags = 0;
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#ifdef COGL_HAS_XLIB_SUPPORT
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parent_class = CLUTTER_BACKEND_CLASS (_clutter_backend_egl_parent_class);
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flags = parent_class->get_features (backend);
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#endif
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if (cogl_clutter_winsys_has_feature (COGL_WINSYS_FEATURE_MULTIPLE_ONSCREEN))
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{
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CLUTTER_NOTE (BACKEND, "Cogl supports multiple onscreen framebuffers");
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flags |= CLUTTER_FEATURE_STAGE_MULTIPLE;
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}
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else
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{
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CLUTTER_NOTE (BACKEND, "Cogl only supports one onscreen framebuffer");
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flags |= CLUTTER_FEATURE_STAGE_STATIC;
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}
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if (cogl_clutter_winsys_has_feature (COGL_WINSYS_FEATURE_SWAP_THROTTLE))
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{
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CLUTTER_NOTE (BACKEND, "Cogl supports swap buffers throttling");
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flags |= CLUTTER_FEATURE_SYNC_TO_VBLANK;
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}
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else
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CLUTTER_NOTE (BACKEND, "Cogl doesn't support swap buffers throttling");
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if (cogl_clutter_winsys_has_feature (COGL_WINSYS_FEATURE_SWAP_BUFFERS_EVENT))
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{
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CLUTTER_NOTE (BACKEND, "Cogl supports swap buffers complete events");
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flags |= CLUTTER_FEATURE_SWAP_EVENTS;
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}
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if (cogl_clutter_winsys_has_feature (COGL_WINSYS_FEATURE_SWAP_REGION))
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{
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CLUTTER_NOTE (BACKEND, "Cogl supports swapping buffer regions");
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backend_egl->can_blit_sub_buffer = TRUE;
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}
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return flags;
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}
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#ifdef COGL_HAS_XLIB_SUPPORT
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static XVisualInfo *
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clutter_backend_egl_get_visual_info (ClutterBackendX11 *backend_x11)
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{
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return cogl_clutter_winsys_xlib_get_visual_info ();
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}
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#endif
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static gboolean
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clutter_backend_egl_create_context (ClutterBackend *backend,
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GError **error)
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{
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#ifdef COGL_HAS_XLIB_SUPPORT
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ClutterBackendX11 *backend_x11 = CLUTTER_BACKEND_X11 (backend);
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#endif
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CoglSwapChain *swap_chain = NULL;
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CoglOnscreenTemplate *onscreen_template = NULL;
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if (backend->cogl_context)
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return TRUE;
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backend->cogl_renderer = cogl_renderer_new ();
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#ifdef COGL_HAS_XLIB_SUPPORT
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cogl_renderer_xlib_set_foreign_display (backend->cogl_renderer,
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backend_x11->xdpy);
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#endif
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if (!cogl_renderer_connect (backend->cogl_renderer, error))
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goto error;
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swap_chain = cogl_swap_chain_new ();
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#ifdef COGL_HAS_XLIB_SUPPORT
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cogl_swap_chain_set_has_alpha (swap_chain,
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clutter_x11_get_use_argb_visual ());
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#endif
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#ifdef COGL_HAS_EGL_PLATFORM_GDL_SUPPORT
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cogl_swap_chain_set_length (swap_chain, gdl_n_buffers);
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#endif
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onscreen_template = cogl_onscreen_template_new (swap_chain);
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cogl_object_unref (swap_chain);
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/* XXX: I have some doubts that this is a good design.
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* Conceptually should we be able to check an onscreen_template
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* without more details about the CoglDisplay configuration?
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*/
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if (!cogl_renderer_check_onscreen_template (backend->cogl_renderer,
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onscreen_template,
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error))
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goto error;
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backend->cogl_display = cogl_display_new (backend->cogl_renderer,
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onscreen_template);
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#ifdef COGL_HAS_EGL_PLATFORM_GDL_SUPPORT
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cogl_gdl_display_set_plane (backend->cogl_display, gdl_plane);
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#endif
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cogl_object_unref (backend->cogl_renderer);
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cogl_object_unref (onscreen_template);
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if (!cogl_display_setup (backend->cogl_display, error))
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goto error;
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backend->cogl_context = cogl_context_new (backend->cogl_display, error);
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if (!backend->cogl_context)
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goto error;
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/* XXX: eventually this should go away but a lot of Cogl code still
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* depends on a global default context. */
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cogl_set_default_context (backend->cogl_context);
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return TRUE;
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error:
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if (backend->cogl_display)
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{
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cogl_object_unref (backend->cogl_display);
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backend->cogl_display = NULL;
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}
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if (onscreen_template)
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cogl_object_unref (onscreen_template);
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if (swap_chain)
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cogl_object_unref (swap_chain);
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if (backend->cogl_renderer)
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{
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cogl_object_unref (backend->cogl_renderer);
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backend->cogl_renderer = NULL;
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}
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return FALSE;
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}
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static ClutterStageWindow *
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clutter_backend_egl_create_stage (ClutterBackend *backend,
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ClutterStage *wrapper,
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GError **error)
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{
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#ifdef COGL_HAS_XLIB_SUPPORT
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ClutterBackendX11 *backend_x11 = CLUTTER_BACKEND_X11 (backend);
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ClutterEventTranslator *translator;
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ClutterStageWindow *stage;
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ClutterStageX11 *stage_x11;
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stage = g_object_new (CLUTTER_TYPE_STAGE_EGL, NULL);
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/* copy backend data into the stage */
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stage_x11 = CLUTTER_STAGE_X11 (stage);
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stage_x11->wrapper = wrapper;
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stage_x11->backend = backend_x11;
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translator = CLUTTER_EVENT_TRANSLATOR (stage_x11);
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_clutter_backend_add_event_translator (backend, translator);
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CLUTTER_NOTE (MISC, "EGLX stage created (display:%p, screen:%d, root:%u)",
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backend_x11->xdpy,
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backend_x11->xscreen_num,
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(unsigned int) backend_x11->xwin_root);
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#else /* COGL_HAS_XLIB_SUPPORT */
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ClutterBackendEGL *backend_egl = CLUTTER_BACKEND_EGL (backend);
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ClutterStageWindow *stage;
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ClutterStageEGL *stage_egl;
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if (G_UNLIKELY (backend_egl->stage != NULL))
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{
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g_set_error (error, CLUTTER_INIT_ERROR,
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CLUTTER_INIT_ERROR_BACKEND,
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"The Cogl backend does not support multiple "
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"onscreen windows");
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return backend_egl->stage;
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}
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stage = g_object_new (CLUTTER_TYPE_STAGE_EGL, NULL);
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stage_egl = CLUTTER_STAGE_EGL (stage);
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stage_egl->backend = backend_egl;
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stage_egl->wrapper = wrapper;
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backend_egl->stage = stage;
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#endif /* COGL_HAS_XLIB_SUPPORT */
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return stage;
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}
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static void
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clutter_backend_egl_ensure_context (ClutterBackend *backend,
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ClutterStage *stage)
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{
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ClutterStageEGL *stage_egl =
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CLUTTER_STAGE_EGL (_clutter_stage_get_window (stage));
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cogl_set_framebuffer (COGL_FRAMEBUFFER (stage_egl->onscreen));
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}
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static void
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_clutter_backend_egl_class_init (ClutterBackendEGLClass *klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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ClutterBackendClass *backend_class = CLUTTER_BACKEND_CLASS (klass);
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#ifdef COGL_HAS_X11_SUPPORT
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ClutterBackendX11Class *backendx11_class = CLUTTER_BACKEND_X11_CLASS (klass);
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#endif
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gobject_class->constructor = clutter_backend_egl_constructor;
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gobject_class->dispose = clutter_backend_egl_dispose;
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gobject_class->finalize = clutter_backend_egl_finalize;
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backend_class->pre_parse = clutter_backend_egl_pre_parse;
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backend_class->post_parse = clutter_backend_egl_post_parse;
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backend_class->get_features = clutter_backend_egl_get_features;
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#ifndef COGL_HAS_XLIB_SUPPORT
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backend_class->get_device_manager = clutter_backend_egl_get_device_manager;
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#endif
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backend_class->init_events = clutter_backend_egl_init_events;
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backend_class->create_stage = clutter_backend_egl_create_stage;
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backend_class->create_context = clutter_backend_egl_create_context;
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backend_class->ensure_context = clutter_backend_egl_ensure_context;
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#ifdef COGL_HAS_XLIB_SUPPORT
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backendx11_class->get_visual_info = clutter_backend_egl_get_visual_info;
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#endif
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}
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static void
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_clutter_backend_egl_init (ClutterBackendEGL *backend_egl)
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{
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#ifdef HAVE_TSLIB
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backend_egl->event_timer = g_timer_new ();
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#endif
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}
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GType
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_clutter_backend_impl_get_type (void)
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{
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return _clutter_backend_egl_get_type ();
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}
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EGLDisplay
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clutter_eglx_display (void)
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{
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return clutter_egl_get_egl_display ();
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}
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EGLDisplay
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clutter_egl_display (void)
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{
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return clutter_egl_get_egl_display ();
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}
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EGLDisplay
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clutter_egl_get_egl_display (void)
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{
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if (backend_singleton == NULL)
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{
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g_critical ("%s has been called before clutter_init()", G_STRFUNC);
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return 0;
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}
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return cogl_context_egl_get_egl_display (backend_singleton->cogl_context);
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}
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/* FIXME we should have a CLUTTER_ define for this */
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#ifdef COGL_HAS_EGL_PLATFORM_GDL_SUPPORT
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void
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clutter_cex100_set_plane (gdl_plane_id_t plane)
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{
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g_return_if_fail (plane >= GDL_PLANE_ID_UPP_A && plane <= GDL_PLANE_ID_UPP_E);
|
|
|
|
gdl_plane = plane;
|
|
}
|
|
|
|
void
|
|
clutter_cex100_set_buffering_mode (ClutterCex100BufferingMode mode)
|
|
{
|
|
g_return_if_fail (mode == CLUTTER_CEX100_DOUBLE_BUFFERING ||
|
|
mode == CLUTTER_CEX100_TRIPLE_BUFFERING);
|
|
|
|
gdl_n_buffers = mode;
|
|
}
|
|
#endif
|