gboolean
_clutter_feature_init (GError **error)
{
ClutterMainContext *context;
CLUTTER_NOTE (MISC, "checking features");
if (!__features)
{
CLUTTER_NOTE (MISC, "allocating features data");
__features = g_new0 (ClutterFeatures, 1);
__features->features_set = FALSE; /* don't rely on zero-ing */
}
if (__features->features_set)
return TRUE;
context = _clutter_context_get_default ();
/* makes sure we have a GL context; if we have, this is a no-op */
if (!_clutter_backend_create_context (context->backend, error))
return FALSE;
__features->flags = (clutter_features_from_cogl (cogl_get_features ())
| _clutter_backend_get_features (context->backend));
__features->features_set = TRUE;
CLUTTER_NOTE (MISC, "features checked");
return TRUE;
}
static gboolean
clutter_stage_win32_realize (ClutterStageWindow *stage_window)
{
ClutterStageWin32 *stage_win32 = CLUTTER_STAGE_WIN32 (stage_window);
ClutterBackend *backend;
ClutterBackendWin32 *backend_win32;
CoglFramebuffer *framebuffer;
gfloat width;
gfloat height;
GError *error = NULL;
CLUTTER_NOTE (MISC, "Realizing main stage");
backend = CLUTTER_BACKEND (stage_win32->backend);
backend_win32 = CLUTTER_BACKEND_WIN32 (backend);
clutter_actor_get_size (CLUTTER_ACTOR (stage_win32->wrapper),
&width, &height);
stage_win32->onscreen = cogl_onscreen_new (backend->cogl_context,
width, height);
if (stage_win32->hwnd == NULL)
{
ATOM window_class = clutter_stage_win32_get_window_class ();
int win_xpos, win_ypos, win_width, win_height;
if (window_class == 0)
{
g_critical ("Unable to register window class");
goto fail;
}
/* If we're in fullscreen mode then use the fullscreen rect
instead */
if (_clutter_stage_is_fullscreen (stage_win32->wrapper))
{
get_fullscreen_rect (stage_win32);
win_xpos = stage_win32->fullscreen_rect.left;
win_ypos = stage_win32->fullscreen_rect.top;
win_width = stage_win32->fullscreen_rect.right - win_xpos;
win_height = stage_win32->fullscreen_rect.bottom - win_ypos;
}
else
{
win_xpos = win_ypos = CW_USEDEFAULT;
get_full_window_size (stage_win32,
stage_win32->win_width,
stage_win32->win_height,
&win_width, &win_height);
}
if (stage_win32->wtitle == NULL)
stage_win32->wtitle = g_utf8_to_utf16 (".", -1, NULL, NULL, NULL);
stage_win32->hwnd = CreateWindowW ((LPWSTR) MAKEINTATOM (window_class),
stage_win32->wtitle,
get_window_style (stage_win32),
win_xpos,
win_ypos,
win_width,
win_height,
NULL, NULL,
GetModuleHandle (NULL),
NULL);
if (stage_win32->hwnd == NULL)
{
g_critical ("Unable to create stage window");
goto fail;
}
/* Store a pointer to the actor in the extra bytes of the window
so we can quickly access it in the window procedure */
SetWindowLongPtrW (stage_win32->hwnd, 0, (LONG_PTR) stage_win32);
}
cogl_win32_onscreen_set_foreign_window (stage_win32->onscreen,
stage_win32->hwnd);
cogl_onscreen_set_swap_throttled (stage_win32->onscreen,
_clutter_get_sync_to_vblank ());
framebuffer = COGL_FRAMEBUFFER (stage_win32->onscreen);
if (!cogl_framebuffer_allocate (framebuffer, &error))
{
g_warning ("Failed to allocate stage: %s", error->message);
g_error_free (error);
cogl_object_unref (stage_win32->onscreen);
stage_win32->onscreen = NULL;
goto fail;
}
/* Create a context. This will be a no-op if we already have one */
if (!_clutter_backend_create_context (CLUTTER_BACKEND (backend_win32),
&error))
{
g_critical ("Unable to realize stage: %s", error->message);
g_error_free (error);
goto fail;
}
CLUTTER_NOTE (BACKEND, "Successfully realized stage");
return TRUE;
fail:
return FALSE;
}
static gboolean
clutter_stage_glx_realize (ClutterStageWindow *stage_window)
{
ClutterStageX11 *stage_x11 = CLUTTER_STAGE_X11 (stage_window);
ClutterStageGLX *stage_glx = CLUTTER_STAGE_GLX (stage_window);
ClutterBackend *backend;
ClutterBackendGLX *backend_glx;
ClutterBackendX11 *backend_x11;
GError *error;
CLUTTER_NOTE (ACTOR, "Realizing stage '%s' [%p]",
G_OBJECT_TYPE_NAME (stage_window),
stage_window);
backend = clutter_get_default_backend ();
backend_glx = CLUTTER_BACKEND_GLX (backend);
backend_x11 = CLUTTER_BACKEND_X11 (backend);
if (stage_x11->xwin == None)
{
XSetWindowAttributes xattr;
unsigned long mask;
XVisualInfo *xvisinfo;
gfloat width, height;
CLUTTER_NOTE (MISC, "Creating stage X window");
xvisinfo = clutter_backend_x11_get_visual_info (backend_x11);
if (xvisinfo == NULL)
{
g_critical ("Unable to find suitable GL visual.");
return FALSE;
}
/* window attributes */
xattr.background_pixel = WhitePixel (backend_x11->xdpy,
backend_x11->xscreen_num);
xattr.border_pixel = 0;
xattr.colormap = XCreateColormap (backend_x11->xdpy,
backend_x11->xwin_root,
xvisinfo->visual,
AllocNone);
mask = CWBorderPixel | CWColormap;
/* Call get_size - this will either get the geometry size (which
* before we create the window is set to 640x480), or if a size
* is set, it will get that. This lets you set a size on the
* stage before it's realized.
*/
clutter_actor_get_size (CLUTTER_ACTOR (stage_x11->wrapper),
&width,
&height);
stage_x11->xwin_width = (gint)width;
stage_x11->xwin_height = (gint)height;
stage_x11->xwin = XCreateWindow (backend_x11->xdpy,
backend_x11->xwin_root,
0, 0,
stage_x11->xwin_width,
stage_x11->xwin_height,
0,
xvisinfo->depth,
InputOutput,
xvisinfo->visual,
mask, &xattr);
CLUTTER_NOTE (BACKEND, "Stage [%p], window: 0x%x, size: %dx%d",
stage_window,
(unsigned int) stage_x11->xwin,
stage_x11->xwin_width,
stage_x11->xwin_height);
XFree (xvisinfo);
}
if (stage_glx->glxwin == None)
{
int major;
int minor;
GLXFBConfig config;
/* Try and create a GLXWindow to use with extensions dependent on
* GLX versions >= 1.3 that don't accept regular X Windows as GLX
* drawables. */
if (glXQueryVersion (backend_x11->xdpy, &major, &minor) &&
major == 1 && minor >= 3 &&
_clutter_backend_glx_get_fbconfig (backend_glx, &config))
{
stage_glx->glxwin = glXCreateWindow (backend_x11->xdpy,
config,
stage_x11->xwin,
NULL);
}
}
if (clutter_x11_has_event_retrieval ())
{
if (clutter_x11_has_xinput ())
{
XSelectInput (backend_x11->xdpy, stage_x11->xwin,
StructureNotifyMask |
FocusChangeMask |
ExposureMask |
KeyPressMask | KeyReleaseMask |
EnterWindowMask | LeaveWindowMask |
PropertyChangeMask);
#ifdef HAVE_XINPUT
_clutter_x11_select_events (stage_x11->xwin);
#endif
}
else
XSelectInput (backend_x11->xdpy, stage_x11->xwin,
StructureNotifyMask |
FocusChangeMask |
ExposureMask |
PointerMotionMask |
KeyPressMask | KeyReleaseMask |
ButtonPressMask | ButtonReleaseMask |
EnterWindowMask | LeaveWindowMask |
PropertyChangeMask);
#ifdef GLX_INTEL_swap_event
if (clutter_feature_available (CLUTTER_FEATURE_SWAP_EVENTS))
{
GLXDrawable drawable =
stage_glx->glxwin ? stage_glx->glxwin : stage_x11->xwin;
glXSelectEvent (backend_x11->xdpy,
drawable,
GLX_BUFFER_SWAP_COMPLETE_INTEL_MASK);
}
#endif /* GLX_INTEL_swap_event */
}
/* no user resize.. */
clutter_stage_x11_fix_window_size (stage_x11,
stage_x11->xwin_width,
stage_x11->xwin_height);
clutter_stage_x11_set_wm_protocols (stage_x11);
/* ask for a context; a no-op, if a context already exists */
error = NULL;
_clutter_backend_create_context (backend, &error);
if (error)
{
g_critical ("Unable to realize stage: %s", error->message);
g_error_free (error);
return FALSE;
}
CLUTTER_NOTE (BACKEND, "Successfully realized stage");
/* chain up to the StageX11 implementation */
return clutter_stage_glx_parent_iface->realize (stage_window);
}