101a3cac4e
Rework the stage wrapper/implementation relation: remove duplicated code and all the bookkeeping from the backends into ClutterStage whenever possible, to reduce the amount of work a backend must do (and possibly get wrong). Thanks to Tommi Komulainen. * clutter/clutter-main.c: (clutter_init_with_args), (clutter_init): Realize the default stage after creation. The default stage is special, because we use it in the initialization sequence. This removes the burden from the backends and reduces the things a backend can get wrong. * clutter/clutter-stage.c: (clutter_stage_show): Make sure to realize the implementation if it hasn't been realized yet. (clutter_stage_realize): Set the REALIZED flag and call clutter_stage_ensure_current() if the implementation was successfully realized. (clutter_stage_unrealized): Call clutter_stage_ensure_current() on unrealize. * clutter/glx/clutter-backend-glx.c: (clutter_backend_glx_create_stage): Do not realize the stage anymore when creating it, and let the normal realization sequence take place. (clutter_backend_glx_ensure_context): Trap for X11 errors. * clutter/glx/clutter-stage-glx.c: (clutter_stage_glx_realize): Chain up to the X11 implementation so that we can set up the window state (title, cursor visibility) when we actually have a X window. Also, do not call clutter_stage_ensure_current(), and rely on the wrapper to do it for us. This means we can drop setting the REALIZED flag on the wrapper. (clutter_stage_glx_unrealize): Do not call clutter_stage_ensure_current() ourselves, and rely on the wrapper to do it for us. * clutter/x11/clutter-stage-x11.c: (set_wm_title), (set_cursor_visible): Move the WM title and cursor visibility code inside their own functions. (clutter_stage_x11_realize): Set the window title and whether the cursor is visible or not after realizing the stage. (clutter_stage_x11_set_cursor_visible), (clutter_stage_x11_set_title): Call set_wm_title() and set_cursor_visible(). (clutter_stage_x11_finalize): Free the title string. * clutter/x11/clutter-stage-x11.h: Save more of the stage state, so that we can set it even when the stage hasn't been realized yet. * clutter/eglnative/clutter-backend-egl.c: (clutter_backend_egl_create_stage): * clutter/eglnative/clutter-stage-egl.c: (clutter_stage_egl_unrealize), (clutter_stage_egl_realize): Update the eglnative backend. * clutter/eglx/clutter-backend-egl.c: (clutter_backend_egl_ensure_context), (clutter_backend_egl_create_stage): * clutter/eglx/clutter-stage-egl.c: (clutter_stage_egl_unrealize), (clutter_stage_egl_realize): Update the eglx backend. * clutter/sdl/clutter-backend-sdl.c: (clutter_backend_sdl_create_stage): * clutter/sdl/clutter-stage-sdl.c: (clutter_stage_sdl_realize): Update the sdl backend. * clutter/fruity/clutter-backend-fruity.c: (clutter_backend_fruity_create_stage): * clutter/sdl/clutter-stage-fruity.c: (clutter_stage_fruity_realize): Update the fruity backend. * tests/test-multistage.c (on_button_press): Bail out if clutter_stage_new() returns NULL. * HACKING.backends: Update backend writing documentation.
236 lines
6.3 KiB
C
236 lines
6.3 KiB
C
#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "clutter-backend-egl.h"
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#include "clutter-stage-egl.h"
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#include "../clutter-private.h"
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#include "../clutter-main.h"
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#include "../clutter-debug.h"
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static ClutterBackendEGL *backend_singleton = NULL;
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G_DEFINE_TYPE (ClutterBackendEGL, clutter_backend_egl, CLUTTER_TYPE_BACKEND);
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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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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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ClutterBackendEGL *backend_egl = CLUTTER_BACKEND_EGL(backend);
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EGLBoolean status;
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backend_egl->edpy = eglGetDisplay (EGL_DEFAULT_DISPLAY);
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status = eglInitialize (backend_egl->edpy,
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&backend_egl->egl_version_major,
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&backend_egl->egl_version_minor);
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if (status != EGL_TRUE)
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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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"Unable to Initialize EGL");
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return FALSE;
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}
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CLUTTER_NOTE (BACKEND, "EGL Reports version %i.%i",
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backend_egl->egl_version_major,
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backend_egl->egl_version_minor);
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return TRUE;
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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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/* not doing anything since we only have one context */
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}
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static void
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clutter_backend_egl_redraw (ClutterBackend *backend,
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ClutterStage *stage)
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{
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ClutterBackendEGL *backend_egl = CLUTTER_BACKEND_EGL (backend);
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ClutterStageEGL *stage_egl;
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ClutterStageWindow *impl;
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impl = _clutter_stage_get_window (stage);
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if (!impl)
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return;
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g_assert (CLUTTER_IS_STAGE_EGL (impl));
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stage_egl = CLUTTER_STAGE_EGL (impl);
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eglWaitNative (EGL_CORE_NATIVE_ENGINE);
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clutter_actor_paint (CLUTTER_ACTOR (stage));
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eglWaitGL();
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eglSwapBuffers (backend_egl->edpy, stage_egl->egl_surface);
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}
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static ClutterActor *
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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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ClutterBackendEGL *backend_egl = CLUTTER_BACKEND_EGL (backend);
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ClutterStageEGL *stage_egl;
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ClutterActor *stage;
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if (backend_egl->stage)
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{
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g_warning ("The EGL native backend does not support multiple stages");
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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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_clutter_stage_set_window (wrapper, CLUTTER_STAGE_WINDOW (stage));
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backend_egl->stage = CLUTTER_ACTOR (stage_egl);
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return stage;
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}
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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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_clutter_events_init (backend);
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}
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static const GOptionEntry entries[] =
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{
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{ NULL }
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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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ClutterBackendEGL *backend_egl = CLUTTER_BACKEND_EGL (gobject);
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_clutter_events_uninit (CLUTTER_BACKEND (backend_egl));
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if (backend_egl->egl_context)
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{
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eglDestroyContext (backend_egl->edpy, backend_egl->egl_context);
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backend_egl->egl_context = NULL;
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}
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if (backend_egl->edpy)
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{
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eglTerminate (backend_egl->edpy);
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backend_egl->edpy = 0;
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}
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G_OBJECT_CLASS (clutter_backend_egl_parent_class)->dispose (gobject);
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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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CLUTTER_NOTE (BACKEND, "Checking features\n"
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"GL_VENDOR: %s\n"
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"GL_RENDERER: %s\n"
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"GL_VERSION: %s\n"
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"EGL_VENDOR: %s\n"
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"EGL_VERSION: %s\n"
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"EGL_EXTENSIONS: %s\n",
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glGetString (GL_VENDOR),
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glGetString (GL_RENDERER),
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glGetString (GL_VERSION),
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eglQueryString (backend_egl->edpy, EGL_VENDOR),
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eglQueryString (backend_egl->edpy, EGL_VERSION),
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eglQueryString (backend_egl->edpy, EGL_EXTENSIONS));
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return CLUTTER_FEATURE_STAGE_STATIC;
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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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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->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->ensure_context = clutter_backend_egl_ensure_context;
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backend_class->redraw = clutter_backend_egl_redraw;
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backend_class->get_features = clutter_backend_egl_get_features;
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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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ClutterBackend *backend = CLUTTER_BACKEND (backend_egl);
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clutter_backend_set_resolution (backend, 96.0);
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clutter_backend_set_double_click_time (backend, 250);
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clutter_backend_set_double_click_distance (backend, 5);
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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_egl_display (void)
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{
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return backend_singleton->edpy;
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}
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